INFLUENCE OF INORGANIC AND ORGANIC FERTILIZER ON GROWTH AND YIELD OF SOYBEAN

Abstract

Present research work was conducted at the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from November, 2015 to March, 2016 to study the influence of different combinations of inorganic and organic fertilizer on soybean (var. BARI Soybean 6). The treatment combinations of inorganic and organic fertilizers viz., T = Control, T 1 = Fertilizer at Recommended Dose (FRD), T 2 = Biofertilizer + 50% FRD, T = Biofertilizer + 75% FRD, T 4 = Mixed fertilizer + 50% FRD, T 5 = Mixed fertilizer + 75% FRD, T = Vermicompost + 50% FRD, T 7 = Vermicompost + 75% FRD, T = Poultry litter + 50% FRD and T 9 8 = Poultry litter + 75% FRD were tested in a 3 times replication with Randomized Complete Block Design (RCBD). Results indicated that, T (Fertilizer at Recommended Dose, FRD- Urea: 50 kg ha -1 , TSP: 150 kg ha -1 , MP: 100 kg ha 1 -1 , Gypsum: 80 kg ha -1 ), T 7 (Vermicompost + 75% FRD) and T 9 and Boron: 500 g ha (Poultry litter + 75% FRD) influenced significantly on most of the growth, yield parameters and yield of soybean. Application of fertilizers at recommended dose, vermicompost + 75% FRD and poultry litter + 75% FRD produced higher level of grain yield 2053, 2073 and 2166 kg ha

respectively. The treatments T 1 , T 7 and T also showed statistically similar results in respect of yield and yield contributing characters. Poultry litter + 75% FRD and vermicompost + 75% FRD produced 5.50 and 4.49% higher yield over FRD. The maximum yield might be attributed to higher number of pods plant 9 -1 and seeds pod -1 . Considering the sustainable yield and sound environment, poultry litter + 75% FRD (T ) or vermicompost + 75% FRD (T ) seems promising for soybean cultivation.