EFFECT OF NITROGEN AND PHOSPHORUS APPLICATION ON THE GROWTH AND YIELD OF BUSH BEAN (Phaseolus vulgaris L.)

Abstract

An experiment was carried out during December 2004 to March 2005 to study the effect of nitrogen and phosphorus on the growth and yield of bush bean at research field of Sher-e-Bangla Agricultural University, Dhaka. Treatments consisted of three levels of N viz., 0, 20 and 40 kg/ha and four levels of phosphorus viz., 0, 50, 75 and 100 kg/ha. There were 12 treatment combinations. The experiment was laid out in RCBD with three replications. The results of the experiment revealed that most of the growth parameters i.e. plant height, plant population as well as yield attributes, pods/plant and grains per pod significantly influenced by different levels of nitrogen and here the highest at 40 kg N/ha. Different levels of phosphorus also significantly exhibited the same trend as shown by nitrogen in respect of almost all parameters. In this experiment, the highest levels of nitrogen 40 kg/ha produced the highest green pod yield (16.56 tiha) and seed yield (2.71 t/ha). While crop fertilized with 75 kg P 205 2.58 ttha. /ha gave pod 15.35 t/ha pod and seed yield The combined effect of nitrogen and phosphorus was also significant. The highest green pod yield (18.61 t/ha) was produced from the treatment combination of 40 kg N/ha with 75 kg P 205 /ha and seed yield (2.96 VIm) was produced from the treatment combination of 40 kg N/ha with 50 kg P2051ha. it was lowest at control.