NPK and sodium content in sesame under salt stress and nitrate/ammonium fertilization

Authors

  • Adaan Sudário Dias Universidade Federal de Campina Grande
  • Geovani Soares de Lima Universidade Federal de Campina Grande/Centro de Tecnologia e Recursos Naturais/Programa de Pós Graduação em Engenharia Agrícola http://orcid.org/0000-0001-9960-1858
  • Hans Raj Gheyi Universidade Federal de Campina Grande
  • Reginaldo Gomes Nobre Universidade Federal de Campina Grande
  • Leandro de Pádua Souza Universidade Federal de Campina Grande
  • Lauriane Almeida dos Anjos Soares Universidade Federal de Campina Grande
  • Francisco Wesley Alves Pinheiro Universidade Federal de Campina Grande

DOI:

https://doi.org/10.14393/BJ-v34n5a2018-39397

Keywords:

Sesamum indicum L., salt stress, nitrogen., Tolerance

Abstract

This study aimed to evaluate the effects of saline water irrigation and fertilization with different nitrate/ammonium proportions on the contents of nitrogen (N), phosphorus (P), potassium (K+) and sodium (Na+) and Na+/K+ ratio in the sesame cv. CNPA G3, through an experiment conducted in drainage lysimeters under greenhouse conditions, in eutrophic Regolithic Neosol with sandy loam texture, in the municipality of Campina Grande-PB, Brazil. Treatments were distributed in randomized blocks, in 5 x 5 factorial scheme, with three replicates, relative to five levels of irrigation water salinity - ECw (0.6; 1.2; 1.8; 2.4 and 3.0 dS m-1) and five nitrate/ammonium proportions - NAP (200:0, 150:50, 100:100, 50:150, 0:200 mg kg-1 of NO3--N/NH4+-N). Increasing ECw levels caused increment in Na+ contents and reduction in N, P and K+ contents in leaf and stem tissues of the sesame cv. CNPA G3. The increase in the Na+/ K+ ratio in leaves and stem of sesame under irrigation with ECw water up to 3.0 dS m-1 can be considered as a mechanism of tolerance to salt stress. There was interaction between the factors (ECw x NAP) for the N content in the leaf tissues, and its highest accumulation was obtained with ECw of 0.6 dS m-1 and NO3--N/NH4+-N proportion of 200:0 mg kg-1.

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Published

2018-10-11

How to Cite

DIAS, A.S., LIMA, G.S. de, GHEYI, H.R., NOBRE, R.G., SOUZA, L. de P., ANJOS SOARES, L.A. dos and PINHEIRO, F.W.A., 2018. NPK and sodium content in sesame under salt stress and nitrate/ammonium fertilization . Bioscience Journal [online], vol. 34, no. 5, pp. 1264–1273. [Accessed24 May 2022]. DOI 10.14393/BJ-v34n5a2018-39397. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/39397.

Issue

Section

Agricultural Sciences