Crescimento de genótipos de feijão-caupi irrigados com água salina

The cowpea has great socio-economic importance, as it is a component of food people diet, especially in developing countries. Sensitive to salinity, which makes difficult to cultivate in areas affected by salt. The objective of the study was to evaluate the growth of cowpea genotypes irrigated with...

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Bibliographic Details
Main Authors: Duarte Brito, Kyonelly Queila, Nascimento, Ronaldo do, Campos Silva, Ivis Andrei, Aguiar dos Santos, Joyce Edja, Guedes de Souza, Felipe
Format: Article in Journal/Newspaper
Language:Portuguese
Published: 2015
Subjects:
DML
Online Access:https://dialnet.unirioja.es/servlet/oaiart?codigo=7322082
Description
Summary:The cowpea has great socio-economic importance, as it is a component of food people diet, especially in developing countries. Sensitive to salinity, which makes difficult to cultivate in areas affected by salt. The objective of the study was to evaluate the growth of cowpea genotypes irrigated with saline water in order to provide subsidies to farming in areas affected by salt. The treatments consisted of the combination of two factors: Irrigation Water Salinity (A1 - water supply with 0,8dSm-1 and A2 – saline solution 4.8 dSm-1) and cowpea genotypes (G1 - MNC04-762F -9, G2 - MNC04-762F-3 G3 - MNC04-762F- 21 G4 - G5 and MNC04-769F-62 - MNC04-765F-153). Combined factors, a completely randomized design, resulted in 10 treatments, with four repetitions. The irrigation with saline water given to the 12 DAS. The variables analyzed were plant height (PH), leaves number (LN), and stem diameter (SD), the evaluation of times corresponding to 27, 42, 57 and 72 days after sowing (DAS) and dry matter leaves (DML), dry mass of the stem (DMS) and root dry mass (RDM). They salinity of irrigation water reduced all growth variables and evaluated biomass. O feijão-caupi tem grande importância socioeconômica, pois é um componente da dieta alimentar, especialmente pelo seu valor nutritivo e fonte de renda para agricultura familiar. Entretanto é uma cultura sensível a salinidade da água de irrigação e solo, o que impossibilita o cultivo em áreas afetadas por sais. Neste sentido, objetivou-se com o trabalho avaliar o crescimento de genótipos de feijão-caupi irrigados com água salina, a fim de fornecer subsídios ao cultivo em regiões afetadas por sais. A pesquisa foi desenvolvida em casa de vegetação da Universidade Federal de Campina Grande. Utilizou-se o delineamento experimental inteiramente casualizado, em esquema fatorial 2 x 5, sendo os tratamentos compostos de dois níveis de condutividade elétrica da água (A1 - água de abastecimento com 0,8dSm-1 e A2 - solução salina 4,8 dSm-1) e cinco genótipos de feijão-caupi (G1 - ...