INFLUENCE OF BIOFERTILIZER, NITROGEN AND PHOSPHOROUS ON NODULATION, GROWTH AND YIELD OF LENTIL

Abstract

To study the influence of Biofertilizer, nitrogen and phosphorous on nodulation, growth and yield of lentil a field experiment was conducted at the central farm, Sher-e-Bangla Agricultural University, Dhaka-1207, during rabi season from November 2016 to March 2017. Treatments consisted of two biofertilizer levels: (i) control and (ii) Biofertilizer (Rhizobium) with six combinations of nitrogenous and phosphetic fertilizer: (i) No nitrogen + phosphorous fertilizer (control), (ii) 50% less of recommended N + P, (iii) 25% less of recommended N + P, (iv) recommended N + P, (v) 25% higher of recommended N + P and (vi) 50% higher of recommended N + P. The experiment was conducted in two factor Randomized Complete Block Design (RCBD) with three replications. Growth and yield parameters like plant height, no of branch plant -1 , nodule count, dry weight plant -1

,thousand seed weight, grain yield, stover yield, biological yield etc. were collected from this experiment. Data were analyzed by MSTAT-C software. The significance of difference among the treatment means was estimated by the Least Significance Difference (LSD) at 5% level of probability. Result revealed that biofertilizer treated plot B (Biofertilizer) was found superior in producing maximum plant height, branches plant 1 -1

, pods plant , dry weight plant , nodule plant -1 , pods plant -1 , seed yield and biological yield of lentil. On the other hand, N+P fertilizer at recommended dose (F ) gave highest yield, plant height, branches plant -1 , dry weight plant -1 3 , nodules plant -1 , pods plant , 1000 seed weight (20.73 g), seed yield, stover yield, and biological yield . In case of interaction, B 1 F was found superior in producing maximum yield and yield components like pods plant 3 -1 (68.40), 1000 seed weight (20.98 g ), seed yield (2562.40 kg ha -1 ), stover yield (2396.80 kg ha -1 ), biological yield (4959.20 kg ha -1 ). From the result of the study, it was revealed that the application of biofertilizer and recommended N + P combination had a positive impact on lentil (BARI Mosur-6).