Competição entre cultivares de feijão-caupi em Pombal – PB.

Abstract

In order to evaluated to, select and to identificat of cowpea cultivars of, under irrigation, with highest yield potential in the municipality of Pombal-PB. The research was realized under field conditions at the Center for Science and Agrifood Technology, Federal University of Campina Grande, CCTA / UFCG, Pombal campus. The experimental design was a randomized block with eight treatments and four replications, with treatments composed by eight cultivars (Costa de Vaca, BRS Marataoã, BRS Itaim, BR-17 Gurguéia, BRS Novaera, Paulistinha, Setentão and BRS Patativa). It were evaluated: gas exchange, total days for the initial flowering (FLI) and initial fruit set (FRI), days between flowering and fruiting (DAFF), total number of pods (NTV), unit weight of pods (MUV), pod length (CV), diameter of pods (DV), number of pods per plant (NPP), number of grain per pod (NGVA), pod yield (PV), grain yield (PROD) and shell weight of pod (PCV). The BRS Itaim and BRS Novaera it had greater earliness to flowering and early fruiting, but were the least productive, while cultivating Costela de vaca had a better photosynthetic and productive performance.