Avaliação de cultivares de feijão (Phaseolus vulgaris) para o plantio em sistema orgânico no Distrito Federeal

Abstract

This study objectified indicate field beans (Phaseolus vulgaris) cultivars that have better performance in organic system, besides to show that the optimum sustainable yield, that can be managed by organic agriculture can be close to potential yield managed by the conventional agriculture. Two experiments were established during the year 2003, one under irrigation system in the dry season and the other in the wet season, in an area with brachiaria pasture with low fertility, the same situation of growers who choose to join the organic system without the necessity of passing through the conversion period, using areas that have been in rest for few years or pastures that doesn't have pesticides or soluble fertilizers aplications. In the subsequent year, the same experiments were established in other area with corrected and equilibrated fertility, the same situation of the growers fitted in the organic activity. A randomized complete block design with four replications was used. It was evaluated the cultivars Diamante Negro, Talismã, Xamego, Marfim, Jalo Precoce, Pérola, Timbó, Radiante, Aporé, Valente and Vereda The best performing cultivars were from "black" and "carioca" commercial groups, which are the most demanded types in the region of the State of Distrito Federal.