Morphophysiology of guava rootstock irrigated with salted water under nitrogen doses

  • Evandro Manoel da Silva Universidade Federal de Campina Grande
  • Reginaldo Gomes Nobre Universidade Federal de Campina Grande
  • Leandro dePádua Souza Universidade Federal de Campina Grande
  • Railene Hérica Carlos Rocha Araújo Universidade Federal de Campina Grande
  • Francisco Wesley Alaves Pinheiro Universidade Federal de Campina Grande
  • Luana Lucas de Sá Almeida Universidade Federal de Campina Grande

Abstract

The irrigation with saline water reduces crop growth and yield, resulting in the need of new techniques that enable the use of this natural resource in fruit growing. In this sense, the objective of this study was to evaluate the effect of saline irrigation water associated with different nitrogen doses on guava rootstock cv. Paluma morphophysiology. The experiment was carried out in a completely randomized blocks design, testing 5 electrical conductivity of irrigation water - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four nitrogen doses for fertilization (541.1; 773.0; 1004.9 and 1236.8 mg dm-3), in a 5x4 factorial, with four repetitions. The increase in the ECw from 0.3 dS m-1 negatively affected the morphophysiology of guava rootstock cv. Paluma, especially during the younger phase of the crop. The N dose of 541 mg dm-3 stimulated the increase of most morphophysiological variables in guava rootstock during the period studied. The nitrogen fertilization did not reduced the salt stress effect on the evaluated variables.

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Author Biographies

Evandro Manoel da Silva, Universidade Federal de Campina Grande

Engenheiro Agrônomo

Mestre em Agronomia (Horticultura Tropical)/Manejo de Solo e Água

Reginaldo Gomes Nobre, Universidade Federal de Campina Grande

Engenheiro Agrônomo

Doutor em Engenharia Agrícola

Leandro dePádua Souza, Universidade Federal de Campina Grande

Engenheiro Agrônomo
Mestrando em Agronomia (Horticultura Tropical)

Railene Hérica Carlos Rocha Araújo, Universidade Federal de Campina Grande

Engenheira Agrônoma

Doutora em Fitotecnia

Francisco Wesley Alaves Pinheiro, Universidade Federal de Campina Grande
Graduando em agronomia
Luana Lucas de Sá Almeida, Universidade Federal de Campina Grande
Mestranda em Agronomia (Horticultura Tropical)
Published
06-04-2017
How to Cite
Silva, E., Nobre, R., Souza, L., Araújo, R., Pinheiro, F., & Almeida, L. (2017). Morphophysiology of guava rootstock irrigated with salted water under nitrogen doses. Comunicata Scientiae, 8(1), 32-42. https://doi.org/10.14295/cs.v8i1.1547
Section
Original Article