GROWTH AND YIELD RESPONSE OF LENTIL TO RHIZOBIUM STRAINS AND DIFFERENT NUTRIENTS MANAGEMENT

Abstract

An experiment was conducted at Sher-e-Bangla Agricultural University farm, Dhaka, to study the effect of Rhizobium strains and different nutrient management on growth and yield response of lentil, during rabi season from November 2019 to March 2020. The experiment was consisted of two factors. Factor A: Rhizobium strains (2) ;1. R 1 v

= BARI RLc-102 and 2. R 2 = BARI RLc-104 and Factor B: Different nutrient management (6); F 0 = Control (no fertilizer management), F 1 =Recommended dose of fertilizers (44, 100, 40 of Urea, TSP, MoP kg ha -1 ), F 2 = Recommended dose of cowdung (5 t ha -1 ), F 3 = Recommended dose of poultry litter (1.5 t ha = Recommended dose of farm yard manure (10 t ha -1 ), and F 5 = Recommended dose of vermicompost (1.75 t ha -1 ). The experiment was laid out in split plot design with three replications. Growth and yield, and yield contributing parameters like plant height, branches plant , thousand seed weight, seed yield, stover yield, biological yield were collected and compared for different treatments. Results revealed that between the Rhizobium strains, R 1 ( BARI RL C - 102) treated plot had numerically the maximum number of pod plant -1 (50.73), seeds pods -1 (1.95), 1000-seeds weight (22.39 g), seed yield (1884.1 kg ha -1 ), stover yield (2128.3 kg ha -1 ) and biological yield (4012.4 Kg ha -1 ) of lentil. On the other hand, among different nutrient management, F 1

(recommended chemical fertilizer (N+P+K) dose) treated plot had numerically the maximum plant height (17.2, 34.715, 41.26, and 39.875 cm at 30, 70, 90 DAS and harvest respectively), branches plant -1 (3.83, 7.85, 10.30,11.43 and 12.145 at 30, 50, 70, 90 DAS and harvest respectively), above ground dry weight plant -1 (0.27, 0.92, 1.90, 4.92, and 6.48 g at 30, 50, 70, 90 DAS and harvest respectively), pods plant -1 (64.56), 1000 seed weight (24.31 g), seed yield (2255.2 kg ha -1 ), stover yield (2421.0 kg ha -1 ) and biological yield (4676.2 kg ha ). In case of combined effect, (R 1 = BARI RL C -102, along with F 1 -1 -1 = recommended dose of fertilizer) R 1

treatment combination was found, superior in producing maximum pods plant -1 (65.2), 1000 seed weight (24.33 g), seed yield (2220 kg ha -1 ) stover yield (2575.33 kg ha -1 ) and biological yield (4795.33 kg ha -1 ). So Rhizobium strains (R 1 ) along with recommended fertilizer management application may improve the growth, yield and yield contributing characters of lentil.