EFFECT OF PHOSPHOROUS ON GROWTH AND YIELD OF MUNGBEAN UNDER DIFFERENT ROW SPACINGS

Abstract

A field experiment was conducted at Sher-e-Bangla Agricultural University Farm, Dhaka in kharif-I season during the period from March 2016 to May 2016 to study the effect of phosphorus on growth and yield of mungbean (BARI Mung-6) under different row spacings . There were two factors viz. phosphorus and different row spacings. Four phosphorus (p) levels viz. (i) P = Control; recommended (R) dose of phosphorus (48 kg P 2 O 5 ha -1 ), (ii) P 1 0 = 25% less than R dose; 36 kg P , (iii) P 2 = 25% more than R dose; 60 kg P 2 O 5 ha -1 and (iv) P = 50% more than R dose; 72 kg P 2 O 5 ha -1 . Three different row spacings viz. (i) S 3 1 = 20 cm, (ii) S = 30 cm and (iii) S = 40 cm. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replication. In case of phosphorus levels, the maximum seed yield (1.41 t ha 3 -1 ) and maximum stover yield (1.67 t ha ) was recorded from P 0 (48 kg P 2 O 5 ha -1 ) treatment which was statistically identical with P 2 (60 kg P 2 O 5 ha -1 ) treatment and P 3 (72 kg P 2 O 5 ha -1 ) treatment. The minimum seed yield (1.02 t ha -1 ) and minimum stover yield (1.28 t ha -1 ) was recorded from P 1 (36 kg P 2 O 5 ha -1 ) treatment. In case of row spacing, the highest seed yield (1.42 t ha -1 ) and highest stover yield (1.73 t ha -1 ) was achieved by S (30 cm) row spacing. Whereas, the lowest seed yield (1.13 t ha -1 2 2 ) and stover yield (1.38 t ha ) was achieved by S (20 cm) row spacing. In case of combined effect the maximum seed yield (1.57 t ha 1 -1 ) and maximum stover yield (1.86 t ha -1 ) was recorded from P 0 S 2 and minimum from P 1 S . So, from the results it may be concluded that application of phosphorous at the rate of 48 kg P 1 2 O 5 ha -1 under a row spacing of 30 cm was found to be achieving higher yield of mungbean