ENHANCEMENT OF YIELD AND SEED QUALITY OF SOYBEAN THROUGH ORGANIC NUTRIENT MANAGEMENT

Abstract

An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from October, 2019 to February, 2020 to enhancement of yield and seed quality of soybean through organic nutrient management. The experiment was laid out in Randomized Complete Block Design (2 factor) replicated with three times. For this study, factor A- V 1 : BARI Soybean 4 and V 2 : Bina soybean 1 and factor B- T 1 : Farm yard manure (10 t/ha); T 2 : Cowdung (10 t/ha); T 3 : Vermicompost (5 t/ha), T 4 ii : Trichoderma (2 t/ha), T 5 : Biochar (10 t/ha), T 6 : Recommended dose of fertilizer (50, 150, 100, 50 & 8 kg/ha of urea, TSP, MoP, Gypsum and boric acid, respectively), T 7 : Rhizobium Inoculum and T 0 : Control. The yield attributing characteristics i.e. plant height (51.23 cm), number of leaves/plant (13.83), number of pods/plant (50.25), pod length (3.10 cm), seeds per pod (2.25), 1000 seeds weight (123.4 g), seed yield (2.24 t/ha), stover yield (3.89 t/ha), biological yield (6.13 t/ha), harvest index (36.41 %) and seed quality i.e. seed viability (71.63 %) and seed germination (83.63 %) were highest and the timing of 1

flowering (30.38 days) and timing of pod maturity (51.38 days) were lowest for BARI Soybean 4. The yield attributing characteristics i.e. plant height (54.60 cm), number of leaves/plant (15.11), number of pods/plant (62.50), pod length (3.27 cm), seeds per pod (3.50), 1000 seeds weight (137.5 g), seed yield (2.59 t/ha), stover yield (4.34 t/ha), biological yield (6.93 t/ha) and harvest index (37.34 %) and seed quality i.e. seed viability (78.50 %) and seed germination (91.50 %) were highest and the timing of 1 st flowering (28.00 days) and timing of pod maturity (49.50 days) were lowest for Biochar (10 t/ha) treatment. Again, BARI Soybean 4 along with Biochar (10 t/ha) showed the best performance in the yield attributing characteristics i.e. plant height (56.23 cm), number of leaves/plant (15.33), number of pods/plant (67.00), pod length (3.31 cm), seeds per pod (4.00), 1000 seeds weight (138.4 g), seed yield (2.67 t/ha), stover yield (4.41 t/ha), biological yield (7.07 t/ha), harvest index (37.68 %), seed quality i.e. seed viability (82.00 %) and seed germination (93.00 %) and the timing of 1 st flowering (27.00 days) and timing of pod maturity (49.00 days) were lowest. Among the treatment combinations, BARI Soybean 4 along with Biochar (10 t/ha) seemed to be more promising for obtaining higher yield of soybean.