EFFECT OF POTASSIUM AND MOLYBDENUM ON THE GROWTH, YIELD AND OIL CONTENTS OF BARI SOYBEAN-5

Abstract

The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from December, 2013 to April 2014 to study the effect of potassium and molybdenum on the growth, yield and oil content of BARI soybean 5. The experiment comprised of two factors; Factor A: Levels of potassium (4 levels)- K O ha -1 (control); K 1 : 30 kg K 2 O ha -1 , K 2 : 40 kg K 2 O ha -1 , K 3 : 50 kg K and Factors B: Levels of molybdenum (3 levels)- Mo 0 : 0 kg Mo ha -1 0 : 0 kg K 2 O ha -1 (control), Mo : 1.0 kg Mo ha -1 , Mo 2 : 1.5 kg Mo ha -1 . The two factors experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. For potassium fertilizer, the highest seed yield (2.01 t ha -1 ) was observed from K and the lowest seed yield (1.60 t ha -1 ) was observed from K . The highest oil content (26.15%) was observed from K 2 (40 kg K 2 O ha -1 0 ) and the lowest oil content (16.64%) from K . The maximum concentration in seed for N (2.39%), P (0.506%), K (1.005%), S (0.507%) and Mo (0.086%) was found from K 0 , while the minimum (1.57%), P (0.238%), K (0.382%), S (0.189%) and Mo (0.066%) was found from K 0 . In case of molybdenum, the highest seed yield (2.11 t ha ) was recorded from Mo 2 , whereas the lowest seed yield (1.58 t ha . The highest oil content (23.89%) was recorded from Mo , whereas the lowest oil content (21.10%) from Mo 0 2 . The maximum concentration in seed for N (2.40%), P (1.045%), K (0.448%), S (0.461%) and Mo (0.078%) was observed from Mo and the minimum concentration in seed for N (1.64%), P (0.541%), K (0.302%), S (0.269%) and Mo (0.052%) was recorded from Mo . Due to the interaction effect of different levels of potassium and molybdenum, the highest seed yield (2.43 t ha -1 ) was found from K 2 Mo 2 0 , while the lowest (1.43 t ha -1 ) was found from K 0 Mo 0 . The highest oil content (28.19%) was found from K 2 -1 Mo , while the lowest oil content (15.16%) from K 0 Mo . The maximum concentration in seed for N (2.85%), P (1.509%), K (0.679%), S (0.623%) and Mo (0.140%) was observed from K 2 Mo 2 0 , whereas the minimum concentration in seed for N (1.21%), P (0.360%), K (0.173%), S (0.164%) and Mo (0.041%) was found from K . Application of 40 kg K 2 O ha -1 & 1.5 kg Mo ha -1 can be more beneficial for the farmers to get maximum yield and as well as economic return from the cultivation of BARI soybean 5. 2 2 ) from Mo 2 0 2 Mo 1 -1 0 0 2