Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Abstract

4Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, ivo_zution@yahoo.com.br 5 Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, joaocarlosagr@hotmail.com 6 Eng. Agrônomo, D.S., Prof. do Depto. de Produção Vegetal, CCAUFES, Alegre, ES, jata@cca.ufes.br RESUMOObjetivando avaliar a nutrição em mudas do cafeeiro conilon variedade robusta decorrentes da irrigação com água salina foi conduzido um experimento em casa de vegetação, montado no delineamento inteiramente casualizado com cinco tratamentos constituídos de um irrigado com água doce e quatro com água salina nas concentrações de 1,0; 2,0; 3,0 e 4,0 dS m -1 com quatro repetições. Para avaliar os efeitos da salinidade sobre a nutrição do cafeeiro foi realizada uma análise nutricional determinando os teores foliares e nas raízes de N, P, K, Ca, Mg, S e Na aos 125 dias após o plantio das mudas. Com os resultados obtidos verificou-se que a irrigação com água salina elevou os teores de Na nas folhas e raízes; proporcionou maiores teores N, Ca e Na nas folhas, K, Mg e S nas raízes, enquanto que a concentração de P não diferiu. Palavras-chave:Estresse salino. Nutrição mineral. Coffea canephora Pierre. GARCIA, G. de O.; NAZÁRIO, A. A.; GONÇALVES, I. Z.; MADALÃO, J. C.; AMARAL, J. A. T. do. NUTRITION OF COFFEE CONILON IRRIGATED WITH SALINE WATER. ABSTRACTIn order to evaluate nutrition of seedlings conilon coffee under irrigation with saline water an experiment was conducted in a greenhouse, in a completely randomized design with five treatments consisted of irrigation with fresh water and irrigation with four concentrations of saline water: 1.0, 2.0, 3.0 and 4.0 dS m -1 , with four replications. To evaluate the effects of salinity on coffee tree's a nutrition analysis was performed by determining the nutritional content in leaves and roots of N, P, K, Ca, Mg, S and Na, at 125 days after planting. The results obtained showed that irrigation with saline water increased the levels of Na in leaves and roots; resulting in higher levels of N, Ca and Na in the leaves, and of K, Mg and S in the roots; the concentration of P did not differ.

Absorption of nutrients by cowpea irrigated with saline water under different leaching fractions

“…Regarding the macronutrients, the observed results corroborate those of Garcia et al (2012), who studied the effects of saline water on the nutrition of conilon coffee and observed that the leaf contents of N, P, K, Ca, Mg and S did not show significant effects with the increase in irrigation water electrical conductivity; only Na content increased with water salinity.…”

Seedling of development and tolerance of eggplant cultivars under saline stress

“…Considering that saline water irrigation increases the index of salinization of the soils and the abundant presence of toxic ions in these soils, due to the accumulation of salts, especially Na + salts, there might occur nutritional imbalance, modification in the osmotic potential of the plant and physiological alterations that interfere with the accumulation of photoassimilates and, consequently, with the accumulation of dry matter (Munns and Tester, 2008;Esteves and Suzuki, 2008;Garcia et al, 2012;Sá et al, 2013;Silva et al, 2013;Lima et al, 2015). Similar results have been reported in the literature.…”