NODULATION, GROWTH AND YIELD OF MUNGBEAN AS AFFECTED BY NITROGEN MANAGEMENT

Abstract

An experiment was carried out at Sher-e-Bangla Agricultural University farm, Dhaka to investigate the nodulation, growth and yield of mungbean (Vigna radiata L.) as affected by nitrogen management during the period from April 2014 to July 2014. The trial comprised of two varieties and five nitrogen management such as V1= BARI mung 4 and V2= BARI mung 6, F1 =No nitrogen (control), F2 = 20 kg N ha-1 as basal, F3 = 10 kg N ha-1 as basal + 10 kg N ha-1 as split, F4 = 40 kg N ha-1 as basal and F5 = 20 kg N ha-1 as basal + 20 kg N ha-1 as split. The experiment was laid out in split-plot design with three replications where two varieties were assigned in the main plot and five nitrogen level in the sub-plot. Plant height, nodulation, shoot length, root length, total dry matter production, number of branches plant-1, pods plant-1, number of seeds pod-1,1000-seeds weight, seed yield, stover yield, biological yield, harvest index and shelling percentage were compared for different treatments. Results revealed that, 20 kg N ha-1 as basal + 20 kg N ha-1 as split (F5) influenced significantly on most of the growth, yield parameters and yield of mungbean. BARI mung 6 (V2) gave the higher yield (1.08 t ha-1) than BARI mung 4 (V1) (0.29 t ha-1) which was 272.41 % higher than V1. Application of 20 kg N ha-1 as basal + 20 kg N ha-1 as split (F5) greatly influenced the seed yield and produced 22.58% higher yield compare to the no N application (F1). The highest seed yield (1.17 t ha-1) was recorded form BARI mung 6 with the interaction of 20 kg N ha-1 as basal + 20 kg N ha-1 as split and the minimum seed yield was recorded from the interaction of BARI mung 4 with no nitrogen.