Desempenho produtivo de cultivares de feijão-caupi na safrinha em Uruçuí-PI

Abstract

The increase in the Brazilian production of cowpea is associated with the increase in the cultivation area in regions historically little explored with the crop. However, the productive performance of crops is closely linked to edaphoclimatic conditions, and above all, to the use of cultivars that are more adapted to growing conditions. In this sense, the present study aimed to study the productive performance of cowpea cultivars in the off-season in Uruçuí-PI. For this purpose, an experiment was conducted from March to June 2022, under rainfed conditions, in the experimental area of the Federal Institute of Piauí - Campus Uruçuí. The test was set up in a randomized block design, with four replications. The treatments consisted of seven cultivars. At the R5 stage, with 90% of the pods mature, the maturation cycle, number of pods per plant, number of grains per plant, mass of one thousand grains and productivity were evaluated. The means of each treatment were compared by Tukey's test, at 5% probability, using the computational software Sisvar. BRS Tumucumaque, BRS Novaera and Verdinha cultivars showed higher grain yield. Cultivar BRS Novaera had its productive performance significantly influenced by the mass of a thousand grains. Cowpea cultivars behave similarly in terms of maturation cycle (early) and show distinct productive performance, with emphasis on Verdinha, BRS Tumucumaque and BRS Novaera