Behavior of mungbean strains in field conditions at Itaguaí, Rio de Janeiro

Abstract

An experiment was conducted at the field station of the Centro Nacional de Pesquisa de Biologia do Solo (CNPBS)/EMBRAPA, Seropédica, Itaguaí, RJ, Brazil, to evaluate the agronomical behavior of 25 cultivars of mungbean (Vigna radiata (L.) Wilczek), in a Red-Yellow Podzolic soil, Itaguaí series, in the rainy season of 1988/89. The best total grain yield was 1520 kg/ha for VC-3012B cultivar, and 1484 kg/ha for VC-3301A. The average yield of the 25 cultivars was 1239 kg/ha. The pod numbers/plant, grain numbers/pod, empty loculi/pod and nodule number/plant had significant differences. The dry nodule weight/plant and dry matter weight and total N of aerial plant part had no significant differences. Four grain harvest were done, giving, the first and the third, together, 91,1% of the total yield, indicating the possibility of having only two harvests, even in the rainy season.