Avaliação agronômica de genótipos de Feijão-Caupi tipo fradinho em condições de Várzea Tropical no Estado do Tocantins.

Abstract

The objective of this work was to evaluate the productive characteristics of cowpea genotypes type cowpea in tropical lowland soils. Independent experiments were carried out in the municipalities of Formoso do Araguaia and Lagoa da Confusão, state of Tocantins, concerning a Value of Cultivation and Use (VCU) trial of the Embrapa Meio-Norte advanced cowpea strains test network. A randomized complete block design was used, with four replications and 14 treatments, 2 commercial cultivars: BRS ITAIM and CB-27, and 12 experimental genotypes in both locations. The characteristics evaluated were: beginning of flowering, lodging, grain weight of five pods, grain length of five pods, number of grains of five pods and yield. There was a significant effect between the genotypes for the variable number of grains of five pods in the trial evaluated in the municipality of Formoso do Araguaia. For the assay carried out in Lagoa da Confusão, there was a significant effect for the variable weight of grains of five pods. The MNC06-895-2 strain was the most productive in the trial conducted in Formoso do Araguaia, with an average yield of 1748 kg ha-1. In the assay carried out in Lagoa da Confusão, the most productive strain was MNC06-895-1 with an average yield of 503 kg ha-1. Key-words: Vigna ungiculata. Evaluation. Productivity. Selection.