Consórcio mamona e feijão vigna na mesorregião do sertão paraibano.

Abstract

In the producing regions has been frequent the search for cultivating of castor bean more productive. The, purpose of this study was to evaluate the behavior of castor bean cultivars, in isolated and intercropped in the Pombal-PB. The experiment was installed in the Monte Alegre farm. The experimental design was arranged in the randomized block in the factorial 2 x 3 + 1. being 2 to cultivate (BRS Energia and BRS Nordestina) and 3 systems of management (single ones and intercrop with 2 or 3 rows of cowpea) and a with cowpea in single ones, with 4 replication. The number of internodesl height of insertion of lo raceme; no. of racemes/planta production/planta productivityl and length, mass and no. of fruits/racemes, was evaluated. In the cowpea the productivity was evaluated. The data had been submitted to the analysis of the variance (test F) and the averages compared for the test of Tukey (p= 0,05). It was calculated the land equivalent ratio (LER) and the correlation between the evaluated characteristics. The Energia presented greater no. of racemes/plant and greater productivity in all the systems. But, for the calculation of the LER, the Nordestina have an adaptation to the intercrop. In the intercrop prioritized to cultivars of average cycle, and in single ones to early and of short cycle cultivars as the Energia. For the productivities the cv. Energia presented best adaptation on the cultivate conditions, especially in single ones.