Comunicata Scientiae
https://comunicatascientiae.com.br/comunicata
<p><span lang="EN-US"><em>Comunicata Scientiae</em> is an international journal publishing research related to horticultural crops. Articles in the journal deal with all areas of horticulture - fruits, vegetables, aromatic and medicinal plants, edible fungi, ornamentals and landscape architecture, under temperate, subtropical and tropical conditions. Original articles, scientific notes and review articles are published in the journal in English.</span></p> <p><em>Comunicata Scientiae</em> is indexed in: SCOPUS (Elsevier), CAB Abstracts, AGRIS/FAO, Agricola (USDA), Chemical Abstracts Services, Genamics, Agora/FAO, EBSCO-Academic Search, Index Copernicus International,Chinese Eletronic Periodical Services (AIRITI Inc.), Eletronic Journals Library (The Elektronische Zeitschriftenbibliothek EZB), ProQuest CSA, BASE (Bielefeld Academic Search Engine),Ulrich's International Periodicals Directory, Gale Cengage Group, DIALNET, Text Journals in Chemistry (ABC Chemistry), Agrobase - Brazilian Agricultural Base, Directory of Open Access Journals, Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex), Electronic Journals (e-journals) and Open J-gate.</p>Federal University of Piauíen-USComunicata Scientiae2176-9079<p>All articles published may be reproduced or utilized in any form or by any means whether specified <em>Comunicata Scientiae</em>, author(s), volume, pages and year. The authors are responsible for all the statements and concepts contained in the article.</p>Lettuce yield response to application of rhizobacteria and nitrogen to the growth substrate
https://comunicatascientiae.com.br/comunicata/article/view/4235
<p>Rhizobacteria of agronomic interest can promote plant growth, increase productivity, and reduce the demand for nitrogen (N) fertilizers by improving the N use efficiency in crops. The objective of this study was to assess the effects of rhizobacteria and nitrogen on the yield of lettuce plants (cultivar Vera). The experiment was carried out in a greenhouse, using a completely randomized design in a 2×2×2×2 factorial arrangement, with five repetitions. The factors consisted of single and combined applications of liquid inoculants (1 mL) based on <em>Azospirillum brasilense</em>, <em>Bacillus subtilis</em>, and <em>Bradyrhizobium japonicum</em>, as well as nitrogen (75 kg ha<sup>-1</sup>) in the growth substrate. The variables assessed were total and commercial shoot fresh and dry weights, root dry weight, total dry weight, and numbers of total and commercial leaves, and shoot nitrogen content. Lettuce yield components improved with nitrogen fertilizer application. The single application of rhizobacteria did not increase lettuce yield, as the plants had decreases in root weight in response to <em>Bradyrhizobium</em><em> japonicum </em>and decreases in total and commercial shoot dry weights, root dry weight, and total dry weight when <em>Bacillus subtilis</em> was used. However, the combined application of <em>Azospirillum brasilense</em>, <em>Bacillus subtilis</em>, and nitrogen increased the lettuce number of commercial leaves and shoot nitrogen content when one or another microbial specie was associated with nitrogen fertilizer.</p>Ana Paula Morais MenezesJorge Ferreira KusdraAndreia de Lima Moreno
Copyright (c) 2024 Ana Paula Morais Menezes, Jorge Ferreira Kusdra, Andreia de Lima Moreno
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2024-02-292024-02-2915e4235e423510.14295/cs.v15.4235Response of Jabuticaba [Plinia cauliflora (Mart) Kausel] seedlings to herbicides
https://comunicatascientiae.com.br/comunicata/article/view/4228
<p>Jabuticaba (<em>Plinia sp.)</em> is one of the most important fruit species in the Brazilian flora; it is appreciated for fresh consumption or products produced from its fruits. The establishing of orchards requires the determination of management methods that favor the development and productivity of this species. The objective of this work was to evaluate the response of jabuticaba seedlings to application of herbicides and determine possible phytotoxicity. The experiment was conducted at the Federal Technological University of Paraná, in Dois Vizinhos, PR, Brazil. A randomized block experimental design with four replications was used, with 5 plants per experimental unit. The treatments consisted of applications of pre-emergence herbicides (Dual Gold® and Spider®) and post-emergence herbicides (2,4-D, Ally®, Enlist®, Primatop®, Fusilade®, Imazetapyr, Flex®, Plenum®, and Volcane®). The applied herbicide rates were equivalent to 50% of their commercial recommendation. A spray volume equivalent to 250 L ha-1 was applied, using water as diluent. The following parameters were evaluated 45 days after applications: stem diameter at 1 cm above ground (cm); plant height (cm); numbers of necrotic, chlorotic, shriveled, and healthy leaves; number and length of shoots (cm); survival rate (%); and chlorophyll contents (a, b, and total). The application of the herbicides Ally®, Enlist®, and Flex® resulted in less harmful effects on jabuticaba seedlings. The lowest survival rates were found in plants in the treatments with the herbicides Dual Gold®, Volcane®, and Primatop®.</p>Edna ZimbroCaliandra BernardiViviane da RosaDouglas Alvarez AlaminoAlberto Ricardo StefeniAmérico Wagner JúniorPedroValério Dutra de Moraes
Copyright (c) 2024 Edna Zimbro, Caliandra Bernardi, Viviane da Rosa, Douglas Alvarez Alamino; Alberto Ricardo Stefeni; Américo Wagner Júnior, PedroValério Dutra de Moraes
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2024-02-292024-02-2915e4228e422810.14295/cs.v15.4228Agronomic performance and fruit sensory and quality analyses of pineapple cultivars
https://comunicatascientiae.com.br/comunicata/article/view/4193
<p>The objective of this study was to assess the agronomic performance and fruit sensory and quality characteristics in traditional and modern pineapple cultivars grown in Tangara da Serra, MT, Brazil. The experiment was conducted in a randomized block design, with five replications and 20 plants per plot. Planting was carried out in double rows with spacing of 1.2×0.4×0.4 m, in May 2018. The evaluated cultivars were BRS-Ajuba, BRS-Imperial, BRS-Vitoria, Gigante-de-Tarauaca, IAC-Fantastico, Jupi, Perola, and Smooth-Cayenne. Gigante-de-Tarauaca exhibited the highest fruit weight but presented low soluble solids content and soluble solids to titratable acidity ratio (SS/TA); thus, it is not recommended for fresh fruit market. Jupi exhibited fruit weights (>1500 g) suitable for the market and soluble solids above 12 °Brix, but SS/TA below 20. Considering the modern cultivars, BRS-Ajuba presented the highest fruit weight, but BRS-Imperial and IAC-Fantastico were the most attractive to consumers, as well as the traditional cultivar Perola. However, BRS-Imperial and IAC-Fantastico yield small fruits, which reduces their per-unit value in the market, as pineapples are typically valued based on their sizes.</p>Angélica Padilha de FreitasWillian KrauseDebora Sarana Ortolan ArantesDayane Castro SilvaEileen Azevedo SantosRenê Arnoux da Silva Campos
Copyright (c) 2024 Angélica Padilha de Freitas, Willian Krause, Debora Sarana Ortolan Arantes, Dayane Castro Silva, Eileen Azevedo Santos, Renê Arnoux da Silva Campos
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2024-02-292024-02-2915e4193e419310.14295/cs.v15.4193Intercropping lettuce and radish as strategy for efficient water use: determination of water demand and crop coefficient
https://comunicatascientiae.com.br/comunicata/article/view/4166
<p>Determining the need for water, as well as crop coefficients, is essential information for the management of irrigation and consequently efficiency in the use of water resources. The study aimed to determine the evapotranspiration and the culture coefficients of lettuce and radish in a monoculture system and consortium in a protected environment. The lettuce cultivar used was Vanda and for radish hybrid 19 was used. The reference evapotranspiration was estimated by the Penman-Monteith method using data from the automatic weather station and the evapotranspiration of the cultures was determined by the direct method using lysimeters of constant water table. The water demand for lettuce and radish in the intercropping system was 170 mm, being less than the lettuce monoculture which was 190 mm and higher than the radish monoculture which was 121 mm. The recommended average values of culture coefficient for conditions were 0.96, 1.85, and 1.50 for lettuce and 0.85, 1.28, and 1.10 for the radish in the initial, intermediate and final stages, respectively. The intercropped cultivation showed lower water consumption than the lettuce monoculture. The coefficient values of lettuce and radish in a monoculture system were higher than the standard values recommended by FAO, emphasizing the importance of conducting regional studies.</p>Cláudia Salim Lozano MenezesRoberto RezendeGustavo Soares WenneckReni SaathDaniele de Souza TerassiPaulo Sérgio Lourenço de FreitasAntônio Carlos Andrade GonçalvesAndré Felipe Barion Alves Andrean
Copyright (c) 2024 Cláudia Salim Lozano Menezes, Roberto Rezende, Gustavo Soares Wenneck, Reni Saath, Daniele de Souza Terassi, Paulo Sérgio Lourenço de Freitas, Antônio Carlos Andrade Gonçalves, André Felipe Barion Alves Andrean
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2024-02-292024-02-2915e4166e416610.14295/cs.v15.4166Biocontrol agents against Penicillium digitatum in 'pera' orange
https://comunicatascientiae.com.br/comunicata/article/view/3767
<p>This work aimed to evaluate the efficiency of biocontrol agents in controlling green mold (<em>Penicillium digitatum</em>) in 'pera' orange fruits. <em>In vitro </em>experiments were carried out with a fungus isolate grown on BDA medium and tested against different concentrations of commercial products based on biocontrol agents: <em>Trichoderma harzianum </em>(0, 5, 10, 15, 20 and 25 mL L <sup>-1 </sup>), <em>Bacillus subtilis </em>(0, 2, 4, 6, 8 and 10 mL L <sup>-1 </sup>) and <em>B. licheniformis </em>+ <em>B. subtilis </em>+ <em>T. longibrachiatum </em>(0, 5, 10, 15, 20 and 25 g L <sup>-1 </sup>) and the fungicide imazalil as standard (2 mL L <sup>-1 </sup>). The experiment analyzed mycelial growth and spore germination. Based on the results, <em>in vivo</em> tests were carried out, evaluating the curative and preventive effect of applying biocontrol agents as inoculating with 10 µL of conidial suspension (10<sup>8</sup> conidia mL<sup>-1</sup>). All biochemical agents displayed 100% control over mycelial growth and a linear effect to inhibit the germination of <em>P. digitatum</em>. The <em>in vivo </em>tests highlighted that all agents showed a linear effect, both in the curative and preventive effects, significantly reducing the development of green mold (AUDPC) in 'pera' orange fruits. The experiment concludes that the prophylactic application of 25 mL L <sup>-1 </sup>of <em>T. harzianum</em>, 10 mL L <sup>-1 </sup>of <em>B. subtilis, </em>and 25 g L <sup>-1 </sup>of <em>B. licheniformis </em>+ <em>B. subtilis </em>+ <em>T. longibrachiatum </em>in orange fruits 'pera' control <em>P. digitatum</em>.</p>Rubia dos Santos BonapazAlisson John de SousaSuelen Cristina PintoMarcelo Roberto KuczerEmir Artaban ZórtéaCacilda Márcia Duarte Rios FariaRenato Vasconcelos Botelho
Copyright (c) 2024 Rubia dos Santos Bonapaz, Alisson John de Sousa, Suelen Cristina Pinto, Marcelo Roberto Kuczer, Emir Artaban Zórtéa, Cacilda Márcia Duarte Rios Faria, Renato Vasconcelos Botelho
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2024-01-312024-01-3115e3767e376710.14295/cs.v15.3767An Efficiency and economic viability of water management in the production of table tomatoes
https://comunicatascientiae.com.br/comunicata/article/view/4159
<p>Tomato (<em>Solanum lycopersicum</em> L.) cultivation can be expensive, with costs exceeding BRL 100,000 per hectare, which drives the search for tactics that reduce costs. Consequently, strategies have been developed to make it viable in tropical regions and areas with water scarcity. The objective was to evaluate the cost and profitability of water management in table tomato cultivation under different irrigation schedules. This study was carried out using the Fascínio tomato hybrid and four irrigation management approaches (no cutting, 100, 105, and 110 days after sowing, DAS). Harvesting was conducted four times, and the averages were summed toCOE estimate the total and commercial production, as well as the losses, for each irrigation schedule. To calculate the cost, both the effective and total operational costs were considered, referring to the establishment of the crop and to each irrigation cut used. Several economic indicators were calculated, including gross income ($), operating profit ($), profitability index (%), gross margin ($), break-even point (kg), and price break-even point ($/kg). The cost of water for irrigation had little impact on Effective Operating Cost (EOC) and Total Operating Cost (TOC); however, the treatment without cutting irrigation provided greater total and commercial production, which reflected the profitability parameters (OP, PI, GM, break-even point, and price break-even point). The treatment without cutting irrigation was 0.13%, 0.19%, and 0.024% more profitable than the treatments with irrigation cuts at 110, 105, and 100 DAS, respectively. This increase in profitability was justified due to the higher productivity, justifying the maintenance of irrigation in tomato cultivation. The treatment without cutting irrigation provided the highest total and commercial productivity of tomato fruits, with 8099.58 and 7927.36 units, respectively, generating a higher gross revenue of $32,398.32.</p>Carlos Luiz VieiraFranciely da Silva PonceRenê Arnoux da Silva CamposTadeu Miranda de QueirozRivanildo DallacortSantino Seabra Júnior
Copyright (c) 2024 Carlos Luiz Vieira, Franciely da Silva Ponce, Renê Arnoux da Silva Campos, Tadeu Miranda de Queiroz, Rivanildo Dallacort, Santino Seabra Júnior
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2024-02-292024-02-2915e4159e415910.14295/cs.v15.4159Profitability and efficiency of conduction systems and optimal tomato density for fresh consumption
https://comunicatascientiae.com.br/comunicata/article/view/4009
<p>This study evaluated the productivity and economic profitability of cultivation systems for the table market. A hybrid tomato cultivar, Fascínio was grown in 12 cultivation systems of the “half stake”, “open V”, and “low” types, with four spacings–0.2, 0.3, 0.4, and 0.5 m between plants and 1.5 m between rows. Eleven fruits were harvested at the mature stage, and the productive (total, commercial, and non-commercial productivity, percentage of losses, and types of damage) and economic (production cost, revenue, and profit) parameters were evaluated. The half-stake and low (both with 0.2 m spacing) cropping systems showed the highest total yields (179 t ha<sup>-1</sup>), differing from the open V (154.4 t ha<sup>-1</sup>) and half-stake (0.2 m spacing) systems at higher commercial productivity (158.1 t ha<sup>-1</sup>). With a production cost below 100 thousand R$ per hectare and a profitability index above 58%, the half-stake and low (0.2 m spacing) cultivation systems proved to be more productive and economically efficient than the open V system, fulfilling the requirements of tomato growers. The creeping system (0.2 m spacing) had the highest percentage of losses (22%) due to non-marketable fruits; Based on damage nature, the half-stake system tomatoes showed black backgrounds and the open and creeping systems showed tomato locules affected by pests.</p>Fernanda Lourenço DippleFranciely da Silva PonceClaudia Aparecida de Lima Toledo Rejeane Maria da SilvaCleci GrzebieluckasSantino Seabra Júnior
Copyright (c) 2024 Fernanda Lourenço Dipple, Franciely da Silva Ponce, Claudia Aparecida de Lima Toledo , Rejeane Maria da Silva, Cleci Grzebieluckas, Santino Seabra Júnior
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2024-02-292024-02-2915e4009e400910.14295/cs.v15.4009Allelopathic potential of ethanolic extract and its fractions from leaves of Geonoma schottiana Mart.
https://comunicatascientiae.com.br/comunicata/article/view/4151
<p><em>Geonoma schottiana</em> Martius (Arecaceae) is an understory palm species widely distributed in Brazil. The objective of this work was to determine the allelopathic potential of <em>Geonoma schottiana </em>leaf extract and its fractions of different polarities and evaluate <em>in vitro</em> and <em>in vivo</em> antioxidant activities. The germination of seeds of <em>Lactuca sativa</em> and <em>Panicum maximum</em> was tested using ethanolic leaf extract and its hexane, dichloromethane, ethyl acetate, and butanol fractions. In vitro antioxidant tests were performed through the DPPH, ABTS, FRAP, and molybdenum tests, whereas the SOD, CAT, and POX enzymatic tests were used to evaluate in vivo antioxidant activity. Chemical analyses were performed through phytochemical screening of the main groups of secondary metabolites by thin-layer chromatography and quantification of the total contents of phenolics, tannins, and flavonoids. The hexane and butanol fractions had allelopathic effects on <em>P. maximum</em> and low activity on <em>L. sativa.</em> The ethyl acetate fraction presented higher antioxidant activity in the DPPH test, whereas butanol presented higher antioxidant activity in the ABTS test. The most active fractions in terms of allelopathic effect interfered with the increases in the production of SOD and POX enzymes. The most polar fractions had higher contents of phenolic compounds. All analyzed chemical groups were found in the phytochemical screening, except the anthracene group.</p>Alessandro Bermudes GomesViviana Borges CorteCarine Coneglian de FariasJosinei Rodrigues FilhoFlávio Mauricio Perini Anderson MariquitoHildegardo França
Copyright (c) 2024 Alessandro Bermudes Gomes, Viviana Borges Corte, Carine Coneglian de Farias, Josinei Rodrigues Filho, Flávio Mauricio Perini , Anderson Mariquito, Hildegardo França
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2024-02-292024-02-2915e4151e415110.14295/cs.v15.4151Irrigation management of Punica granatum in the Sub-Middle São Francisco River Valley: Morphophysiological aspects.
https://comunicatascientiae.com.br/comunicata/article/view/4023
<p>Water availability in arid and semi-arid areas has been a limiting factor to the expansion of agricultural production in several regions of the world. In this context, this research aimed to study the morphophysiological responses of pomegranate as a function of different irrigation depths in the Sub-Middle São Francisco River Valley (SSFV). The research was carried out in a commercial area located in Petrolina-PE, Brazil, with eight-year-old plants of lineage No. 12 of Embrapa Semi-Arid, spaced 4.0 x 2.0 m. Drip irrigation with a flow of 2.4 L h<sup>−1</sup> emitter<sup>−1</sup> was used every two days. The treatments consisted of D50 – continuous irrigation deficit with 50% ET<sub>0</sub> replacement, D75 – continuous irrigation deficit with 75% ET<sub>0</sub> replacement, D100 – continuous irrigation deficit with 100% ET<sub>0</sub> replacement, and DF – farm irrigation. The experiment was conducted in randomized blocks with five replications. Plant height, cup diameter, number of flower buds, flowers, and fruits, relative chlorophyll content, free proline content in the leaves, gas exchange, water potential in the branch, and soil moisture were evaluated. The data were submitted for analysis of variance and regression at the 5% probability level, using the Sisvar program. We observed that the analyzed pomegranate can avoid excessive water loss to the atmosphere when subjected to water stress using different mechanisms. Moreover, the deficit of irrigation depths led to an anticipation and/or uniformity of flowering.</p>Larissa de Sá Gomes LealLígia Borges MarinhoGertrudes Macário deMaria Érica Pereira dosVagner Deniz ClementeEduardo Santana AiresAcácio Figueiredo Neto
Copyright (c) 2024 Larissa de Sá Gomes Leal, Lígia Borges Marinho, Gertrudes Macário de Oliveira, Maria Érica Pereira dos Santos, Vagner Deniz Clemente Campos, Eduardo Santana Aires, Acácio Figueiredo Neto
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2024-02-292024-02-2915e4023e402310.14295/cs.v15.4023Production and quality of ornamental peppers cultivated under colored shade nets
https://comunicatascientiae.com.br/comunicata/article/view/4144
<p>The cultivation of ornamental peppers in places with high temperature and incidence of solar radiation limits the production and quality of plants and fruits. The colored shade nets were introduced and adopted, because they reduce the temperature and intensity of solar radiation, as well as, low cost and simple to handle. The aimed was to evaluate the production and quality of <em>C. chinense and C. frutescens </em>cultivated under colored shade nets. The experiment was developed in the Floriculture Sector of the Agronomy Department of the Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil from February to August 2021 in entirely randomized design. <em>C. chinense </em>and <em>C. frutescens </em>were cultivated under red, pearl and aluminet nets with 35% shading and without net. At 150 days, production variables were quantified. The red net reduced the maximum temperature by at 4.1ºC and the pearl and aluminet nets reduced the minimum temperature by 3ºC. The maximum and minimum relative humidity was increased by 2.6 and 8.5%, respectively, by the red net. The pearl net obtained the lowest percentage of solar radiation incidence. Plant height was greater in the red and pearl nets, and <em>C. frutescens. </em>The diameter and stem fresh matter did not differ statistically between treatments. Root length was greater in the red and aluminet nets. The longitudinal and transverse canopy ratio was higher in <em>C. chinense </em>cultivated under the aluminet net. The number of leaves and leaves fresh matter was higher in pearl and aluminet net, and in <em>C. frutescens</em>, but leaves dry matter was higher in <em>C. chinense. </em>The number of flower buds and flowers, and flower buds dry matter was higher in C<em>. chinense</em>. The root fresh matter and dry matter was greater in <em>C. chinese</em>. The use of colored shade nets during the cultivation period effectively reduced temperature and light intensity. The aluminet net in association with <em>C. chinense </em>are recommended considering the compactness of height, pot coverage, greater number, shape and arrangement of fruits.</p>Renata Ranielly Pedroza CruzAriana Mota PereiraErli Pinto dos SantosToshik Iarley da SilvaFelipe Douglas FerreiraWellington Souto RibeiroLuiz Alexandre PeternelliJosé Antonio Saraiva Grossi
Copyright (c) 2024 Renata Ranielly Pedroza Cruz, Ariana Mota Pereira, Erli Pinto dos Santos, Toshik Iarley da Silva, Felipe Douglas Ferreira, Wellington Souto Ribeiro, Luiz Alexandre Peternelli, José Antonio Saraiva Grossi
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2024-02-292024-02-2915e4144e414410.14295/cs.v15.4144Morphophysiology of Punica Granatum L. under microalgae biomass stimulation
https://comunicatascientiae.com.br/comunicata/article/view/4142
<p>The use of microalgae has been proeminent in agricultural scenario, because it is an alternative product considered extremelly productive, which contains essential elements for plants. Thus, this study aimed to evaluate the morphophysiology of <em>Punica granatum</em> L. seedlings treated with <em>Spirulina platensis</em> and <em>Scenedesmus</em> sp. nanoparticles in controlled environment. The research was carried out at the of Federal University of Campina Grande, Pombal-PB, using a completely randomized design with five replications. The factorial scheme (2 x 4) was adopted, represented by two types of microalgae (<em>Spirulina platensis</em>; <em>Scenedesmus </em>sp.) and four doses of application (0, 5, 10 and 15%). Growth evaluations happened at 135 days after planting, verifying the number of leaves and branches and shoot length. The physiological parameters evaluated were gas exchanges, chlorophyll ‘<em>a</em>’ fluorescence, electron transport rate, stationary fluorescence, maximum fluorescence yield after light adaptation and quantum efficiency of PSII. Shoot length and number of branches had rises at doses of 6 and 15%. Number of leaves was induced in seedlings at dose of 8% with <em>Spirulina platensis</em>. Stomatal conductance and internal CO<sub>2</sub> concentration increased in seedlings sprayed with<em> Spirulina platensis</em>. extract of <em>Scenedesmus </em>sp. improved the stationary fluorescence and quantum efficiency of PSII in pomegranate seedlings.</p>fernando antonio lima GomesRailene Hérica Carlos Rocha AraújoJackson Silva NóbregaJéssica Aline Linné Albert Einstein Mathias de Medeiros Teodosio Adriana da Silva Santos Márcio Santos da SilvaJosé Franciraldo de Lima
Copyright (c) 2024 Fernando Antonio Lima Gomes, Railene Hérica Carlos Rocha Araújo, Jackson Silva Nóbrega, Jéssica Aline Linné , Albert Einstein Mathias de Medeiros Teodosio , Adriana da Silva Santos , Márcio Santos da Silva, José Franciraldo de Lima
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2024-02-292024-02-2915e4142e414210.14295/cs.v15.4142Production performance of Hylocereus polyrhizus based on cladode size and position
https://comunicatascientiae.com.br/comunicata/article/view/3547
<p>The analysis of productive architecture of plants involves macroscopic observation of spatial distributions of different vegetative and reproductive organs. However, few studies have evaluated these aspects in dragon fruit plants for production purposes. The objective of this study was to evaluate vegetative, reproductive, and quality parameters of dragon fruit plants (<em>Hylocereus polyrhizus; </em>variety Cebra) based on the position and size of cladodes, considering morphological, production, and quality characteristics of the fruits. The experiment was conducted from September 2016 to May 2018, using a completely randomized design in a 3×4 factorial arrangement, consisted of three positions of cladode insertion in the plant (primary, secondary, and tertiary) and four different cladode sizes (≤ 20 cm; 21-40 cm; 41-60 cm, and 61-80 cm), with five replications and six cladodes per plot, totaling 360 evaluated cladodes. According to the results, vegetative and reproductive characteristics of dragon fruit plants variety Cebra were affected by the cladode position and size. Fruits developed on primary cladodes with sizes of 21 to 40 cm presented, in general, better-quality characteristics. All evaluated physical and physicochemical characteristics were affected by the cladode position and size, except for titratable acidity and soluble solids to titratable acidity ratio. Fruits developed on cladodes smaller than 20 cm had lower quality. Therefore, maintaining and promoting the growth of primary cladodes with sizes of 21 to 40 cm and removing those smaller than 20 cm is recommended.</p>Leonardo Pereira da Silva BritoEllison Rosario de OliveiraPaulo Henrique Dionizio LuizJosé Darlan RamosLetícia Gabriela Ferreira de AlmeidaVerônica Andrade Dos Santos
Copyright (c) 2024 Leonardo Pereira da Silva Brito, Ellison Rosario de Oliveira, Paulo Henrique Dionizio Luiz, José Darlan Ramos, Letícia Gabriela Ferreira de Almeida, Verônica Andrade Dos Santos
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2024-01-312024-01-3115e3547e354710.14295/cs.v15.3547Detection Of Sm Gene Resistance To Gray Leaf Spot In (Stemphylium Spp.) Tomato Cultivars Iraq
https://comunicatascientiae.com.br/comunicata/article/view/3564
<p><strong>Abstract</strong></p> <p>Gray leaf spot, Occurs due to Stemphylium spp., is a foliar disease in tomato. The Resistance against gray leaf spot disease is conferred by a single incompletely dominant gene Sm located on chromosome 11. This study aimed to identify cultivar resistant alleles or susceptible alleles by molecular marker tightly linked to the Sm gene and the use of marker-assisted selection inbreeding. In this study, we used eight tomato cultivars Farmed in Iraq. The analysis demonstrated that the co-dominant marker Sm-InDel, which produced 122-bp fragment for resistance in seven genotypes and a 140-bp fragment for susceptible alleles in one genotype, respectively could be utilized in Marker-assisted selection (MAS)for gray leaf spot resistance.</p>Zeina Thamer Abd ULHussein Al RufayeWarqaa Muhammed Shariff AL Sheikh Intisar Kadhum Ghaleb
Copyright (c) 2024 Zeina Thamer Abd ULHussein Al Rufaye, Warqaa Muhammed Shariff AL Sheikh , Intisar Kadhum Ghaleb
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2024-01-312024-01-3115e3564e356410.14295/cs.v15.3564Physiology and development of grafted dwarf cashew seedlings under different fertilization doses and irrigated with saline water
https://comunicatascientiae.com.br/comunicata/article/view/3676
<p>Salinity is one of the primary challenges faced by irrigated agriculture in semi-arid regions. This study aimed to investigate the effects of fertilization on the development of cashew seedlings irrigated with water of varying salinity levels. The research was conducted in a protected environment at Embrapa Agroindústria Tropical, Fortaleza, using grafted seedlings of the BRS 189 clone on CCP 06 rootstock. The treatments resulted from the combination of three levels of NPK fertilization (control - without fertilization, 50% less than conventional nutrition, and 100% of conventional nutrition used by the crop), which was incorporated into the substrate before sowing CCP 06, with four salinity levels (ECa of 0.8, 4.0, 7.0, and 10.0 dS m<sup>-1</sup>) of the irrigation water for the seedlings. Gas exchange, assimilate accumulation, growth, and nutrient content in the leaves, stems, and roots of the seedlings were evaluated 90 days after grafting. The data were subjected to analysis of variance, and when a significant effect was observed, the Tukey test was performed, while quantitative data were subjected to regression analysis. Overall, fertilization levels did not influence seedling growth. Fertilization did not interfere with photosynthate production, which performed better when the seedlings were subjected to a salinity of 7.0 dS m<sup>-1</sup>. The application of NPK to the substrate resulted in higher levels of nitrogen in the leaves, while phosphorus content decreased, and foliar potassium was not influenced by fertilization.</p>thamirisMarlos Alves BezerraReivany Eduardo Morais LimaHernandes de Oliveira FeitosaGabrielen de Maria Gomes Dias
Copyright (c) 2024 Thamiris Ferreira Pinto Paiva, Marlos Alves Bezerra, Reivany Eduardo Morais Lima, Hernandes de Oliveira Feitosa, Gabrielen de Maria Gomes Dias
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2024-01-312024-01-3115e3676e367610.14295/cs.v15.3676Air assistance and spray volumes on the coverage, droplet density, and spray deposition in melon plants
https://comunicatascientiae.com.br/comunicata/article/view/4014
<p>This study aimed to evaluate the influence of air assistance on the coverage, droplet density, and deposition of the mixture volume applied to melon plants. The experiment was conducted in a completely randomized design set up in a 4 x 4 x 2 factorial arrangement referring to four spray nozzles (AVI 110-02, TT 110-02, AVI 110-03, and TT 110-03), four mixture volumes (140, 200, 300, and 400 L ha<sup>-1</sup>), and two application techniques (with and without air assistance), at a constant working pressure of 300 kPa. Deposition analysis was performed by using a bright blue dye, and the coverage pattern and droplet density were analyzed using water-sensitive paper tags attached to the adaxial and abaxial surfaces of the leaf blade of melon plants. Air assistance in the spray boom improved the deposition of the mixture sprayed on melon leaves only when using nozzle TT 110-02, whereas nozzles TT 110-03, AVI 110-02, and AVI 110-03 were not influenced by air assistance. Coverage and spray deposition on the adaxial leaf surface increased with the mixture volume applied for all nozzles. The technique using water-sensitive tags is not efficient to evaluate droplet density when working with high spray volumes.</p>Larissa Oliveira FontesFrancisco Cláudio Lopes de FreitasMauri Martins TeixeiraÍtalo Nunes SilvaRobson
Copyright (c) 2024 Larissa Oliveira Fontes, Francisco Cláudio Lopes de Freitas, Mauri Martins Teixeira, Ítalo Nunes Silva, Robson Willian Nunes Lopes
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2024-01-312024-01-311510.14295/cs.v15.4014Tolerance of pineapple cultivars to natural flowering induction in the state of Mato Grosso
https://comunicatascientiae.com.br/comunicata/article/view/4108
<p>Natural flowering in pineapple crops can cause significant economic losses to growers, resulting in uneven fruiting, which hinders phytosanitary operations and the scaling of fruit harvest. The objective of this work was to evaluate the tolerance of eight pineapple cultivars to natural flowering induction in Tangara da Serra, Mato Grosso, Brazil. The cultivars BRS-Ajuba, BRS-Imperial, BRS-Vitoria, Gigante-de-Tarauaca, IAC-Fantastico, Jupi, Perola, and Smooth-Cayenne were evaluated. Planting was carried out in May of 2018, in a randomized block design, with five replications and 20 plants per plot. Plant height, D-leaf length, and percentage of induced plants were evaluated. The surveying period of plants naturally induced was between May and September 2019. In this period, the plants were between 12 and 16 months of age, with adequate D-leaf lengths and plant heights for the occurrence of flowering induction. There were days with night-time temperatures below 15 °C; the lowest photoperiod was in June. The cultivars Smooth-Cayenne, BRS-Imperial, and IAC-Fantastico were tolerant to the natural induction, which resulted in uneven fruiting, causing losses to growers.</p>DeboraWillian KrauseAngélica Padilha de FreitasDayane Castro SilvaRivanildo DallacortWilliam Fenner
Copyright (c) 2024 Debora Sarana Ortolan Arantes, Willian Krause, Angélica Padilha de Freitas, Dayane Castro Silva, Rivanildo Dallacort, William Fenner
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2024-01-312024-01-3115e4108e410810.14295/cs.v15.4108Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon
https://comunicatascientiae.com.br/comunicata/article/view/4161
<p>The slow growth of the pineapple (<em>Ananas comosus</em> (L.) Merr.) during the vegetative phase prolongs the crop cycle, resulting in higher production costs. When used in low doses, some herbicides can stimulate plant growth, a phenomenon known as hormesis. The aim of this study was to determine the effects of sub-doses of glyphosate and 2,4-dichlorophenoxyacetic acid (2,4-D) on growth in the Pérola cultivar of the pineapple. The treatments under study consisted of glyphosate applications of 0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360 and 720 g a.e. ha<sup>-1</sup>, and 2,4-D applications of 0, 1.68, 3.35, 6.70, 16.75, 33.5, 67, 167.5, 335 and 670 g a.e. ha<sup>-1</sup>. The experiments were completely randomised with four replications. The plants were grown in the greenhouse in pots with a capacity of 8 dm<sup>3</sup> substrate. Growth variables were evaluated in the plants, together with the total and partitioned accumulated biomass (leaf, stem and root). The data were submitted to analysis of variance and regression. The pineapple showed greater phytotoxicity from the glyphosate herbicide at applications ranging from 18 to 720 g a.e. ha<sup>-1</sup> and from 2,4-D in the range of 167.5 to 670 g a.e. ha<sup>-1</sup>. The hormesis effect was evidenced by the 32.25% increase in root fresh weight at the dose of 1.8 g a.e. ha<sup>-1</sup> glyphosate. However, the slow growth of the pineapple was not overcome by the hormesis effect of the herbicides.</p>Glauber Ferreira BarretoJosé Maria Arcanjo Alves Paulo Roberto Ribeiro RochaThaís Santiago CastroDeyse Cristina Oliveira da Silva Sonicley Sonicley da Silva MaiaJosé de Anchieta a Alves de AlbuquerqueLeandro Torres de Souza
Copyright (c) 2024 Glauber Ferreira Barreto, José Maria Arcanjo Alves , Paulo Roberto Ribeiro Rocha, Thaís Santiago Castro, Deyse Cristina Oliveira da Silva , Sonicley Sonicley da Silva Maia, José de Anchieta a Alves de Albuquerque, Leandro Torres de Souza
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2024-01-312024-01-3115e4161e416110.14295/cs.v15.4161Production of desert rose seedlings under different cultivation techniques
https://comunicatascientiae.com.br/comunicata/article/view/4087
<p>Desert roses have gained notoriety in the ornamental market; however, the use of locally produced substrates is<br />diverse. Three experiments were carried out using a completely randomized design, with treatments arranged in<br />a 3x4 factorial. Physical and chemical analyses were carried out for the following substrates: carnauba bagana,<br />carbonized rice husk, decomposed babassu stem, and soil. Experiment 1: three sowing depths, D1: 0mm, D2:<br />5mm and D3: 10 mm, combined with four substrates. Experiment 2: three substrates combined with four shading<br />screens: thermal reflector, white shading, black shading and open sky. Experiment 3: three substrates combined with four irrigation levels: 100, 75, 50, and 25%. Measurements were made in the three experiments and data<br />were tested by analysis of variance using the “F” test, at the levels of 1% and 5%. Regression and averages were<br />explored using Tukey’s test. It was concluded that the seedlings developed better under a level of 10 mm and<br />substrate with 100% carnauba bagana, in association with an outdoor environment, and water levels between<br />50 and 75% of pot capacity.</p>Lídia Ferreira MoraesPaula Sara Teixeira de OliveiraAmália Santos Da Silva VerasRamón Yuri Ferreira PereiraKleber Veras CordeiroJanaiane Ferreira dos SantosEdson Dias de Oliveira NetoRaissa Rachel Salustriano da Silva-Matos
Copyright (c) 2023 Lídia Ferreira Moraes, Paula Sara Teixeira de Oliveira, Amália Santos Da Silva Veras, Ramón Yuri Ferreira Pereira, Kleber Veras Cordeiro, Janaiane Ferreira dos Santos, Edson Dias de Oliveira Neto, Raissa Rachel Salustriano da Silva-Matos
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2023-10-312023-10-3115e4087e408710.14295/cs.v15.4087O Organic substrates in the development of camu-camuzeiro (Myrciaria dubia (H. B. K.) McVaugh) in the amazon region
https://comunicatascientiae.com.br/comunicata/article/view/4213
<p align="justify">Amazon is the largest tropical forest on the planet, it has a variety of plant species with emphasis on many<br />fruit trees, such as the camu-camuzeiro (Myrciaria dubia (H. B. K.) McVaugh), which occurs naturally on the<br />banks of rivers, lakes, lowlands and flooded forest of the Amazon. The objective of this study is to evaluate the<br />development of camu-camuzeiro seedlings in different organic substrates. The experiment was conducted<br />in the seedling production nursery of the Federal Rural University of Amazon. The experimental design was<br />entirely randomized, with ten treatments and five repetitions, each portion was represented by ten plants,<br />totaling 500 seedlings. The substrates evaluated were: T1 - Humus; T2 - Humus + Bird manure; T3 - Humus + Bovine<br />manure; T4 - Humus + Açaí kernel; T5 - Humus + Chestnut shell; T6 - Humus + Chestnut shell + Poultry manure;<br />T7 - Humus + Bovine manure + Chestnut shell; T8 - Humus + Açaí kernel + Poultry manure; T9 - Humus + Açaí<br />kernel + Bovine manure; T10 - Commercial. The different substrates used influenced the development of camucamuzeiro<br />seedlings evaluated at 180 days. The treatments with a substrate based on Humus (T1), Humus + Açaí<br />kernel (T4), Humus + Chestnut shell (T5), Humus + Chestnut shell + Poultry manure (T6), Humus + Bovine manure +<br />Chestnut shell (T7), Humus + Açaí Kernel + Bovine manure (T9) and the commercial substrate (T10) are the best<br />for a satisfactory development of this crop in the production field.</p>Antonia Benedita da Silva BronzeSinara de Nazaré Santana BritoHarleson Sidney Almeida MonteiroEwerton Delgado SenaNayara Ferreira Barros da SilvaValdeci Junior Fonseca Pinheiro Layse Barreto de Almeida Abreu Rhuan Carlos Nascimento Dias
Copyright (c) 2024 Antonia Benedita da Silva Bronze, Sinara de Nazaré Santana Brito, Harleson Sidney Almeida Monteiro, Ewerton Delgado Sena, Nayara Ferreira Barros da Silva, Valdeci Junior Fonseca Pinheiro , Layse Barreto de Almeida Abreu , Rhuan Carlos Nascimento Dias
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2023-11-302023-11-3015e4213e421310.14295/cs.v15.4213Agrophysiology, biochemical, and yielding characteristics of Chinese cabbage due to formulations and concentrations of nutrient in hydroponic
https://comunicatascientiae.com.br/comunicata/article/view/4192
<p>Hydroponic solution from agricultural organic waste can be used as an alternative to chemical solutions and<br />strongly increases the growth and yield of Chinese cabbage plants. This study was to obtain formulations,<br />concentrations, and their interactions that have the potential to increase the agronomic, physiological,<br />biochemical, and yielding characteristics of Chinese cabbage in hydroponic culture. This study was conducted<br />from September to November 2022 using a randomized block design with two factors and three replications.<br />The first factor was the formulation of organic nutrient solutions (F1= banana peels+bean sprouts+eggshells; F2=<br />banana humps+onion peels+bean sprouts+moringa leaves; F3= moringa leaves+onion peels+bean sprouts; F4=<br />AB mix as a comparison). The second factor was the concentrations (600; 900; 1,200; 1,500 ppm). Data were<br />analyzed using ANOVA and proceeded with the Duncan at P<0.05. The results showed that formulations F3 and<br />F2 significantly increased Mg and chlorophyll b levels while formulation F1 increased nitrate and flavonoids. The<br />concentrations ranged from 1,200 to 1,500 ppm showed the highest yield and shoot fresh weight were 2.86 kg<br />m<sup>-2</sup> year<sup>-1</sup> and 30.70 g. The F3C4 interaction was highly recommended to increase the yield of Chinese cabbage<br />by 2.68 kg m<sup>-2</sup> year<sup>-1</sup> compared to the other liquid organic fertilizers and it could be used as a substitute for using<br />liquid chemical fertilizers in hydroponic culture.</p>Ferlist Rio SiahaanKoko TampubolonErika Pardede
Copyright (c) 2024 Ferlist Rio Siahaan, Koko Tampubolon, Erika Pardede
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2023-11-302023-11-3015e4192e419210.14295/cs.v15.4192Effects of plant biostimulants and plant growth regulator applications on plant growth in lilium 'Adelante'
https://comunicatascientiae.com.br/comunicata/article/view/4191
<p><strong> </strong></p> <p>This experiment was designed, it was determined the effects of mycorrhiza, vermicompost, promalin applications on development of plant properties in a bulbous plant, Lilyum 'Adelante. Flower branch length (cm), flower branch diameter (mm), internode number, flower bud number, flower bud length (cm), flower stem length (cm), flower width (cm), flower length (cm), number of leaves and leaf length (cm) were measured. The results showed that no treatment increased plant height more than control plants, but each application had different effects on other plant characteristics. As a matter of fact, mycorrhiza increased internode number, flower bud number, flower bud length, flower stem length, flower length, number of leaves and leaf length by 6.3%, 15.6%, 14.2%, 6%, 40%, 10.3%, 2.9% and 6%, respectively. Vermicompost increased flower bud length, flower length and leaf length by 6.6, 12, 15.3% and 16.1%, respectively. Promalin, on the other hand, increased the flower stem length, flower length and leaf length by 56.3% and 15.4%, respectively. The application of mycorrhiza together with Promalin did not have a different effect than the application of Promalin alone, and even showed a lower effect than the application of Promalin alone. Mycorrhiza, on the other hand, was the application that showed the best effect compared to other applications. Therefore, it can be recommended for plant growth in lilies. However, due to the effect of application time and dose on flowering time, it is possible to obtain different results in plant development in lilies.</p>ömer sarı
Copyright (c) 2023 ömer sarı
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2023-10-312023-10-3115e4191e419110.14295/cs.v15.4191Yield of Syn-1 synthetic varieties of tropical onion resulting from openpollinated Brazilian populations
https://comunicatascientiae.com.br/comunicata/article/view/4183
<p>Due to technological limitations for the development of onion hybrids, first-cycle synthetic varieties (Syn1-<br />SV) could be an alternative to partially explore heterotic vigor. The growing areas of onion hybrids in Brazil<br />are mainly defined by bulb yield and uniformity. From this perspective, the present study aimed to develop<br />tropical onion Syn1-SV and estimate mid-parent heterosis (Hm), heterobeltiosis (Hp), and standard heterosis<br />(Hs) as an alternative to hybrid development. Six Syn1-SVs, eight open-pollinated (OP) populations, and one<br />commercial hybrid were evaluated in a randomized block design with three replications, in two semesters, for<br />the commercial bulb yield (CBY) and days to bulb harvest (DBH). Significant differences were observed for<br />treatments (T), semesters (S) and the T*S interaction for both variables (p-value<0.05). The OPs ‘Alfa SF RT’ in<br />the first semester and ‘IPA11’ in the second semester were the most precocious treatments. The highest CBY<br />was estimated in the commercial hybrid (105.8 t ha-1) and in ‘Alfa SF RT’ (45.5 t ha-1) in the first and second<br />semesters, respectively. Three Syn1-SVs showed positive Hm values, ranging from 2.0% to 6.3% for CBY. Three<br />Syn1-SV showed positive Hp values in the first semester, ranging from 3.0% to 5.2%, for CBY. Only the Syn1-SV ‘Alfa<br />SF RT’ × ‘BRS Alfa São Francisco’ (48.9 t ha-1) showed positive Hs values, surpassing by a small value the control<br />OP population ‘IPA11’ (48.0 t ha-1), indicating the potential of Syn1-SV as an option for onion hybrids.</p>Ítala Layanne de Souza AlvesValter Rodrigues de OliveiraCarlos Antonio Fernandes Santos
Copyright (c) 2024 Ítala Layanne de Souza Alves, Valter Rodrigues de Oliveira, Carlos Antonio Fernandes Santos
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2023-11-302023-11-3015e4183e418310.14295/cs.v15.4183Agronomic efficiency of organomineral fertilizer in onion cultivation
https://comunicatascientiae.com.br/comunicata/article/view/4132
<p>Onions has high nutritional and nutraceutical value. In the last decade the bulbs have gained increasing<br />relevance due their compounds linked to anti-cancer effects. The fertilization managment is relevant to this<br />crop because the mineral’s influence beyond productivity, interfering in several aspects of quality. Organic<br />sources despite available, adoption is still cautious and seen as an expense, rather than investment in soil<br />quality. Therefore, the objective was to evaluate the use of organomineral fertilizer on the development and<br />productivity of Akamaru hybrid. The experiment was carried out in Cristalina-GO, in a randomized block design,<br />with 4 replications and 5 treatments: organomineral fertilizer (NPK) with the formula 02-20-05. The rates were<br />adjusted to approximately the same amounts, where 3,680 kg ha<sup>-1</sup> was considered the 100% rate, 2,944 kg ha<sup>-1</sup><br />as 80%, 2,208 kg ha<sup>-1</sup> as 60% and 1,472 kg ha<sup>-1</sup> as 40% of the rate established. The rate of 2,300 kg ha<sup>-1</sup> of the<br />formulated 03-35-06 referred to 100% of the mineral source. The total yield of onion was not affected when the<br />organomineral source was used, therefore, it is a viable source for use in onion culture. A rate reduction of up<br />to 20% of the recommended mineral rate allows good performance (85.5 t ha<sup>-1</sup>), with 7.5 t ha<sup>-1</sup> higher than the<br />60% reduction of the recommended rate.</p>Roberta Camargos OliveiraHugo Franco de Novaes Rosa Sergio Macedo Silva Angélica Araújo Queiroz José Magno Queiroz Luz
Copyright (c) 2024 Roberta Camargos Oliveira, Hugo Franco de Novaes Rosa , Sergio Macedo Silva , Angélica Araújo Queiroz , José Magno Queiroz Luz
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2023-11-302023-11-3015e4132e413210.14295/cs.v15.4132NPK combinations mitigate the deleterious effects of salt stress on the morphophysiology of West Indian Cherry
https://comunicatascientiae.com.br/comunicata/article/view/4122
<p>Under salt stress, plant growth and development are negatively affected due to physiological changes,<br />requiring strategies such as fertilization management to minimize these effects. In this scenario, this study aimed<br />to evaluate the effect of combinations of nitrogen, phosphorus, and potassium on the growth, leaf water<br />status, electrolyte leakage, and gas exchange of West Indian Cherry grown under water stress in the second<br />year of production. The experiment was conducted in a protected environment in Campina Grande - PB.<br />The treatments were distributed in a randomized block design with a 2 × 10 factorial arrangement with three<br />replications corresponding to two electrical conductivity levels of irrigation water– ECw (0.6 and 4.0 dS m<sup>-1</sup>)<br />and ten combinations of fertilization with nitrogen, phosphorus, and potassium (80-100-100; 100-100-100; 120-<br />100-100; 140-100-100; 100-80-100; 100-120-100; 100-140-100; 100-100-80; 100-100-120, and 100-100-140% of the<br />recommendation in the second year of production). Irrigation with the ECw of 4.0 dS m-1 negatively affected<br />plant growth, the leaf water status, electrolyte leakage, and the leaf gas exchange of West Indian Cherry.<br />However, the 40% increase (C4 -140-100-100% of the recommended N-P<sub>2</sub>O<sub>5</sub>-K<sub>2</sub>O level) in the nitrogen level<br />mitigated the deleterious effects of salt stress on the relative water content, internal CO<sub>2</sub> concentration, and the<br />CO<sub>2</sub> assimilation rate of West Indian Cherry plants in the second year of production.</p>Antonio Manoel da Silva FilhoThamara Silva da CostaAlberto Soares de MeloDenis Soares CostaAndré Alisson Rodrigues da SilvaHans Raj GheyiFrancisco de Assis da SilvaMirandy dos Santos Dias
Copyright (c) 2023 Antonio Manoel da Silva Filho, Thamara Silva da Costa, Alberto Soares de Melo, Denis Soares Costa, André Alisson Rodrigues da Silva, Hans Raj Gheyi, Francisco de Assis da Silva, Mirandy dos Santos Dias
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2023-11-302023-11-3015e4122e412210.14295/cs.v15.4122Organomineral as a substitute for mineral fertilization in potato cultivation
https://comunicatascientiae.com.br/comunicata/article/view/4121
<p>Potato (Solanum tuberosum, L.) is one of the most responsive crops to fertilizer application, which drives the<br />need to rationalize and make the most of nutritional resources in efficient and sustainable management. Based<br />on the hypothesis that the organomineral is a great alternative to increase potato productivity (Ágata and<br />Atlantic cultivars) and that it can be indicated as a substitute for mineral fertilizers, this study aims to evaluate<br />the effect of organomineral doses applied in the planting furrow on potato productivity to identify the best<br />level of mineral fertilizer replacement. A study was conducted in the city of Cristalina (state of Goiás, Brazil),<br />evaluating the replacement of 40, 60, 80, and 100% of mineral fertilizer (standard) provided via organomineral<br />fertilizer in two widely cultivated varieties. The total productivity and the productivity in classes were monitored,<br />as well as the nutrient contents in the leaves. The results showed that the organomineral is a great alternative to<br />increase potato productivity and can be indicated as a substitute for mineral fertilizers. For the cultivar Ágata,<br />an organomineral dose of 80% is recommended concerning mineral fertilization. On the other hand, for the<br />Atlantic cultivar, the same dose of mineral fertilizer is recommended. In both cultivars, there was an increase in<br />tuber size with organomineral fertilization, which indicates greater efficiency in tuber productivity.</p>Roberta Camargos de OliveiraRisely Ferraz Almeida Pedro Lucas Santos Oliveira Jarbas Reis SilvaJosé Magno Queiroz Luz
Copyright (c) 2023 Roberta Camargos de Oliveira, Risely Ferraz Almeida , Pedro Lucas Santos Oliveira , Jarbas Reis Silva, José Magno Queiroz Luz
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2023-11-302023-11-3015e4121e412110.14295/cs.v15.4121Floral, reproductive, and pollination biology of Floral, reproductive, and pollination biology of Eugenia myrcianthes Nied.
https://comunicatascientiae.com.br/comunicata/article/view/3504
<p>Studies on species of the family Myrtaceae are mostly related to floristic surveys, reproduction involving large plant communities, and family taxonomy. Thus, the objective of this study was to elucidate aspects of the floral and reproductive biology, as well as floral visitors of ubajai (<em>Eugenia myrcianthes</em> Nied.). Studies were conducted on floral morphology and morphometry, identification of nectaries and structures attractive to floral visitors, characterization of floral visitors, stigma receptivity, and androecium maturation, pollen storage, in vitro viability testing, and characterization of the reproductive system. Ubajai flowers open at approximately 6:00 a.m., and their anthers are the main attractive structure to floral visitors. The main floral visitors and effective pollinators of ubajai are honeybees (<em>Apis mellifera</em>). The addition of 40% sucrose to the culture medium, using fresh pre-anthesis pollen, allows for a 90% germination rate. Ubajai pollen is recalcitrant, thus, it loses viability before 30 days of storage, even when stored in a refrigerator, freezer, liquid nitrogen, or natural environment. Ubajai can be considered a self-compatible plant; however, fertilization of flowers through cross-pollination also occurs, and apomixis does not occur.</p>Karina GuolloCarlos Kosera NetoViviane da RosaIgor Alfonzo GarayAmérico Wagner JuniorMatheus Araújo Moreira Rocha
Copyright (c) 2024 Karina Guollo, Carlos Kosera Neto, Viviane da Rosa, Igor Alfonzo Garay, Américo Wagner Junior, Matheus Araújo Moreira Rocha
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2023-10-312023-10-3115e3504e350410.14295/cs.v15.3504Native bacteria from the caatinga biome mitigate the effects of drought on melon (Cucumis melo L.)
https://comunicatascientiae.com.br/comunicata/article/view/4072
<p>Plant growth-promoting bacteria (PGPB) from drylands are promising biological resources to mitigate the<br />negative effects induced by water deficit. The aim of this study was to evaluate the effects of bacteria native<br />from the Caatinga biome on the initial growth of melon plants subjected to water deficit. Nine bacteria (M1.1,<br />T11.2, PH5.2, T11.1, T2.1, T1.1, M7.1, XX6.9 and XX6.6) isolated from Caatinga soils were tested in two varieties<br />of melons (Cantaloupe and Yellow) cultivated under two water availability scenarios (50% irrigation and 100%<br />irrigation of the crop evapotranspiration - ETc). In the control treatment, no inoculation was performed. The<br />effects of the treatments on shoot length (SL), shoot dry mass (SDM), root length (RL) and root dry mass (RDM)<br />were evaluated. In the scenario without water deficit (100% ETc replacement), the isolates PH5.2, T2.2, M7.1,<br />XX6.9 promoted (p<0.05) the root and shoot biomasses in the Cantaloupe variety, while in the Yellow variety,<br />growth promotion was sporadic, with three isolates (M1.1, M7.1 and XX6.9) promoting at least one parameter<br />evaluated. In the scenario with a water deficit (50% ETc replacement), isolates T1.1 and XX6.9 promoted the<br />total biomasses (SDM and RDM) of the Cantaloupe and Yellow varieties, respectively. All isolates stimulated RL in<br />the Cantaloupe variety. Bacteria isolated from the Caatinga promote growth and reduce the effects of water<br />deficit in melon and thus are potential inoculants to enhance production in the early stages of melon cultivation<br />in semiarid regions.</p>Kayo César Fernandes Pereira DiasIgor Juliano da Silva SouzaYasmin Costa BarrosEdilania Pereira da SilvaJakson LeiteAdriane Freire Araújo FeitozaAdailson Feitoza de Jesus Santos
Copyright (c) 2024 Kayo César Fernandes Pereira Dias, Igor Juliano da Silva Souza, Yasmin Costa Barros, Edilania Pereira da Silva, Jakson Leite, Adriane Freire Araújo Feitoza, Adailson Feitoza de Jesus Santos
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2023-11-302023-11-3015e4072e407210.14295/cs.v15.4072Organic fertilizer doses for top-dressing fertilization in jambu (Acmella oleracea [(L.) R. K. Jansen]) production
https://comunicatascientiae.com.br/comunicata/article/view/4070
<p>Due to the lack of specific fertilization recommendations for jambu cultivation, producers commonly use<br />fertilizers recommended for other vegetables. This study aimed to evaluate the effect of different doses of<br />organic fertilizers, namely hoof and horn powder and castor bean cake, on jambu plant production under an<br />organic system. The experiments were conducted at the Experimental Farm of São Manuel, SP, belonging to the<br />School of Agriculture (FCA) – UNESP, and at the “Estância Três Nascentes” site, located in Botucatu, SP, Brazil.<br />Twelve treatments were evaluated, in a 2 x 6 factorial design, consisting of two organic fertilizers (castor bean<br />cake (CBC) and hoof and horn powder (HHP)) x 6 top dressing N doses (50, 75, 100, 125, 150, and 0 (control<br />without these fertilizers)). The experimental design was a randomized block with four replications. Plant height<br />(PH), number of inflorescences (NI), the fresh weight of inflorescence (FWI), the fresh weight of vegetative parts<br />(FWVP), and the total fresh weight (TFW) were evaluated at each location. Linear increases were observed in all<br />characteristics in both locations as the fertilizer doses increased. Comparing the highest dose (150 kg ha-1 of N)<br />with the control, increases of 109%, 251%, 218%, 283%, and 227% were obtained at the farm in São Manuel, and<br />69%, 79%, 111%, 276%, and 118% in Botucatu, for PH, NI, FWVP, FWI, and TFW, respectively. When comparing the<br />two fertilizers, HHP presented better results than CBC for most characteristics in both areas.</p>Thatiane Nepomuceno AlvesAntonio Ismael Inácio CardosoNicholas Taborda NordiJoseantonio Ribeiro de CarvalhoMarcelo Munhoz Venâncio de OliveiraDébora Cristina Mastroleo LuisRenan Lima de Sousa
Copyright (c) 2024 Thatiane Nepomuceno Alves, Antonio Ismael Inácio Cardoso, Nicholas Taborda Nordi, Joseantonio Ribeiro de Carvalho, Marcelo Munhoz Venâncio de Oliveira, Débora Cristina Mastroleo Luis, Renan Lima de Sousa
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2023-11-302023-11-3015e4070e407010.14295/cs.v15.4070Gladiolus production as a function of growing environment conditions: a scientometric analysis
https://comunicatascientiae.com.br/comunicata/article/view/4066
<p>Lately, an increase in the commercialization of gladiolus has been observed, making it necessary to know information that contributes to the optimization of its production. Such information can be obtained from the scientometric analysis. Thus, the objective of this work was to perform a scientometric analysis of the global scientific literature to quantify the studies on gladiolus and to specify in the Brazilian scientific literature the results<br />of works on the cultivation environment. The scientometric analysis was performed in the Scopus database for the entire historical data series until the year 2021. A total of 1402 scientific papers published on gladiolus culture were obtained with an average publication rate equal to 0.62 papers year<sup>-1</sup>. These papers were mostly<br />published as scientific articles in English language in journals focusing on horticulture and India is the country<br />with the highest number of publications. About the cultivation environment, the studies conducted in Brazil indicate that the production of gladiolus should be carried out in periods that do not occur frosts and also for average air temperature below 35°C and soil humidity above 75% of field capacity. Despite the important results of these works, the global scientific literature still lacks more information that adequately assists in the increase of gladiolus production.</p>Bruno Henrique Vale dos SantosJordana Moura Caetano
Copyright (c) 2023 Bruno Henrique Vale dos Santos, Jordana Moura Caetano
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2023-10-312023-10-311510.14295/cs.v15.4066Organic Fertilization in 'Pérola' Pineapple Increases Fruit Production and Physical and Chemical Characteristics
https://comunicatascientiae.com.br/comunicata/article/view/3969
<p>Pineapple is the third most cultivated tropical fruit in the world. However, few studies have focused on the cultivation<br />using organic fertilization, especially in semiarid regions. Thus, this study aimed to evaluate growth, production and<br />physicochemical traits of pineapple fruits produced under organic fertilization in the semiarid. The experiment was<br />carried out at the didactic orchard of Federal Rural University of Semiarid, Mossoró, Rio Grande do Norte, Brazil. Four<br />fertilization treatments were studied (chemical fertilizer, cattle manure, goat manure, poultry litter). At 18 months<br />after planting, plant growth, physicochemical traits of fruits, and productivity were evaluated. Results showed that<br />organic fertilization with poultry litter provides best results for physicochemical traits of fruits and productivity of ‘Pérola’<br />pineapple. Organic fertilization with poultry litter is most promising for plant growth, physicochemical traits of fruits, and<br />productivity in ‘Pérola’ pineapple, therefore, the most suitable for cultivation in the semiarid region. The fruit firmness,<br />central cylinder weight, and ratio SS/TA showed best values under chemical and goat manure fertilization.</p>Toni Halan Silva IrineuVander MendonçaElias Ariel MouraFranciezer Vicente LimaLuana Mendes OliveiraMarlenildo Ferreira MeloLuciana Freitas Medeiros Mendonça Pollyana Cardoso Chagas
Copyright (c) 2023 Toni Halan Silva Irineu, Vander Mendonça, Elias Ariel Moura, Franciezer Vicente Lima, Luana Mendes Oliveira, Marlenildo Ferreira Melo, Luciana Freitas Medeiros Mendonça , Pollyana Cardoso Chagas
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2023-11-302023-11-3015e3969e396910.14295/cs.v15.3969Physicochemical and functional characteristics of peach cv. Esmeralda fertilized with different doses of nitrogen
https://comunicatascientiae.com.br/comunicata/article/view/3565
<p>The aim of this study was to evaluate the physicochemical and functional characteristics of fruits yielded by<br />peach trees which were fertilized with different doses of nitrogen. The experiment, which was installed in 2014.<br />It had a randomized complete block design with four replicates. The nitrogen rates applied were 0, 40, 80,<br />120, and 160 kg N per hectare. Fruits were harvested in four crops in a row (2014, 2015, 2016, and 2017). The<br />parameters were evaluated: soluble solids, pH, titratable acidity, epidermis and pulp firmness, attributes of pulp<br />color, carotenoids, phenolic compounds, and antioxidant activity. Responses were only related to luminosity in<br />the first crop. However, N fertilization influenced not only the soluble solid content, pH and chroma in the second<br />crop but also all attributes of color in the third crop. SS, pH, ºHue and chroma differed among treatments in<br />the fourth crop. The more N in the first three crops, the more carotenoids. Phenolic compounds decreased<br />significantly in the 2016 crop whereas antioxidant activity diminished in both the 2015 and 2016 crops. Even<br />though an ideal dose of N cannot be recommended due to high variation in attributes in the years under<br />evaluation, it is needed because of other factors, such as weat her.</p>Renan NavroskiCaroline Farias BarretoRufino Fernando Flores CantillanoMárcia VizzottoGilberto Nava
Copyright (c) 2024 Renan Navroski, Caroline Farias Barreto, Rufino Fernando Flores Cantillano, Márcia Vizzotto, Gilberto Nava
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2023-11-302023-11-3015e3565e356510.14295/cs.v15.3565