Effects of different phosphorus levels and frequency of boron levels on growth and yield of greengram

Abstract

Pulse production is very low and become challenging problem against the requirement of increasing population of our country. Moreover, it has a numerous utilities and used primarily as a food crop because it is a major source of protein in cereal based diets for its high lysine content. Among the different phosphorus levels and frequency of boron levels under in treatment T 11 i.e., N 3 (20:60:20NPK) + 0.2% foliar spray of borax at 35DAS (pre-flowering) recorded maximum plant height (53.60cm), number of leaves plant -1 (21.16), number of branches plant -1 (6.76), no. of nodules plant -1 (8.80), dry weight (24.82g), crop growth rate (0.53g m -2 day -1 ), relative growth rate (0.04g g -1 day -1 ), number of pods plant -1 (42.46), average number of grain pod -1 (13.40), pod length (10.80 cm), test weight (47.00g) , grain yield (1.62 t ha -1 ), straw yield (2.85 t ha -1 ), protein content (24.56%) and harvest index (36.15%). Whereas the lowest value (48.26 cm,18.93 plant -1 ,6.20 plant -1 , 5.53 plant -1 , 20.02 g, 0.39g m -2 day -1 , 0.03g g -1 day -1 , 30.40 plant -1 , 7.73 pod -1 , 8.13cm, 41.06g, 0.99 t ha -1 , 2.06 t ha -1 , 20.36 % and 32.58 %, respectively) in the treatment T 1 i.e., N 1 (20:40:20 NPK). The highest gross return (Rs.78795.00 ha -1 ), net return (Rs. 57222.00 ha -1 ) and benefit cost ratio (2.65) were registered in treatment T 11 i.e., N 3 (20:60:20NPK)+ 0.2% foliar spray of borax at 35DAS (pre-flowering). Whereas the lowest value (Rs.48925.50 ha -1 ), (Rs.30075.50 ha -1 ) and (1.59), respectively in the treatment T 1 i.e. N 1 (20:40:20 NPK).