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- Title
Crescimento, teor de sódio, cloro e relação iônica na mamoneira sob estresse salino e adubação nitrogenada.
- Authors
de Lima, Geovani Soares; Nobre, Reginaldo Gomes; Gheyi, Hans Raj; dos Anjos Soares, Lauriane Almeida; Alves Pinheiro, Francisco Wesley; Dias, Adaan Sudário
- Abstract
The aim of this study was to evaluate the growth, the content of sodium, chloride and ion relation in castor bean cv. BRS Energia as a function of irrigation water salinity and nitrogen fertilization under field conditions in the TypicUsthorthent eutrophic soil of sandy loam te×ture in the municipality of Pombal, PB . The e×perimental design was randomized blocks, a 5×4 factorial, consisting of the combination of five levels of electrical conductivity of irrigation water - ECw (0.3, 1.2, 2.1, 3.0 and 3.9 dS m-1) and four doses of nitrogen-DN (70, 100, 130 and 160% of the recommended dose). The use of water with ECw above 0.3 dS m-1 negatively affected the plant height, stem diameter, number of leaves and leaf area; the content of sodium and chloride increased with the increase in ECwin all parts of the plant, and the content of chloride being higher than sodium; irrigation with water of ECw up to 3.7 dS m-1 resulted in an increase in the Na+/K+ in root tissues; the increase in application of DN affected positively the number of leaves,leaf area and chloride in leaf.
- Publication
Comunicata Scientiae, 2015, Vol 6, Issue 2, p212
- ISSN
2176-9079
- Publication type
Article