Production and post-harvest quality of custard apple irrigated with saline water and fertilized with N-P-K
Salt stress reduces plant growth and production. However, adequate fertilization can minimize the effects of salinity. From this perspective, this study aimed to assess the production and post-harvest quality of custard apple irrigated with saline water and fertilized with combinations of nitrogen, phosphorus, and potassium in the second year of cultivation. The experiment was conducted in a randomized block design and arranged as a 2 × 8 factorial with three replications, using containers adapted as drainage lysimeters in a protected environment in the municipality of Campina Grande, PB. The factors consisted of two levels of electrical conductivity of irrigation water - ECw (0.8 and 3.0 dS m-1) and eight combinations of N-P-K fertilization: 100-100-100; 100-100-125; 100-125-100; 100-125-125; 125-100-100; 125-100-125; 125-125-100; and 125-125-125% of the recommended (100%) level (100-80-40 g of N-P2O5-K2O per plant per year). Irrigation with the water salinity level of 3.0 dS m-1 reduced custard apple production in the second year. However, fertilization with the 125-100-125% N-P-K combination increased the mean fruit weight, total soluble solids, and ascorbic acid content. High irrigation water salinity negatively affected the number of segments, number of fruits, number of seeds per plant, mean fruit weight, fruit diameter, and fruit height. The 125-100-40 g N-P-K combination provided the highest values of mean fruit weight, total soluble solids, ascorbic acid content, and maturity index regardless of the salinity level. The plants grown under the ECw of 0.8 dS m-1 and 125-100-80 g of N-P-K achieved the highest total production per plant.
How to Cite
Copyright (c) 2022 Fagner Nogueira Ferreira , Geovani Soares de Lima , Hans Raj Gheyi, Francisco Vanies da Silva Sá, Adaan Sudário Dias, Lauriane Almeida dos Anjos Soares
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
All articles published may be reproduced or utilized in any form or by any means whether specified Comunicata Scientiae, author(s), volume, pages and year. The authors are responsible for all the statements and concepts contained in the article.