EFFECT OF PHOSPHORUS AND MOLYBDENUM ON THE GROWTH, YIELD AND CHEMICAL COMPOSITION OF MUNGBEAN ( Vigna radiata L.)

Abstract

The experiment was conducted at the Farm of Sher-e-Bangla Agricultural University. Dhaka, Bangladesh during March to May 2008 to study the effects of phosphorus (F) and molybdenum (Mo) on growth, yield and chemical composition of munghean. The variety, BARI Mung-6 was used in this experiment as the test crop. The experiment consists of two factors: Factor A: Phosphorus (4 levels) namely. F 0: 0 kg P205 hi' (Control), F 40: 40 kg P205 ha".?80 : 80 kg 1 3 205 ha". F120 : 120 kg P205 ha4, Factor B: Molybdenum (4 levels) namely, Mo0: 0 kg Mo ha 1 (Control), Mo 025: 0.25 kg Mo ha", Mo050 : 0.50 kg Mo ha 4 and Mo075 : 0.75 kg Mo hi'. Data on different yield contributing characters, yield and nutrient content in harvested seed and plant and nutrients concentration in soil were recorded. There was a positive impact of? and Mo and their interaction on growth. yield and yield attributes of mungbean. All the plant parameters were increased with increasing level of P (up to 80 kg/ha) and Mo (up to 0.50 kg/ha). Nutrient content in plant and seed were also increased with increasing level of P and Mo tip to certain level. The highest N (3.88%). p (0.565%) and K (0.66%) content in seeds was found in P 40Mo 0. P 0Mo00 and Pg Mo05o treatment respectively. Nutrient content and organic matter in post harvest soil was also inlluenced by different levels of P and Mo application. The highest seed yield (I .2711ha) and stovcr yield (1.68 tlha) were obtained from the treatment P 80Mo050 due to combined effect of P and Mo which was 64.9% and 75.0% higher over control treatment respectively. However, from the study it can be concluded that application of P205 @ 80 kg/ha and Mo @ 0.50 kg/ha was the most suitable combination for better yield of rnungbean in l)eep Rcd Brown Terrace Soils of Tejgaon Series in Bangladesh.