Effect of Tillage on the Production Performance and Nutritional Composition of Soybean in Coastal Areas

Abstract

Soybean is not only useful for human, but also a valuable source of feed for livestock. One of the most extensively studied feed ingredients for feeding animals is soybean meal, which is also one of the most crucial raw materials. This study was conducted to determine the effect of tillage on the production performance and nutritional composition of soybean (Glycine max (L.) Merrill) in coastal areas. The experiment was conducted with factorial Randomized Complete Block Design (RCBD) involving two factors e.g. factor A (V1=BD-4, V2=BARI Soybean-6) and factor B (T1=Conventional Tillage, T2= No Tillage). The result showed significant difference (p<0.05) in conventional tillage in different agronomic parameters at different Dys After Planting (DAP) like plant height, branch number, leaf number, chlorophyl content and yield components like seed yield, seed weight, stover yield, biological yield and harvest index of both varieties. Tillage methods and varieties had a significant effect on plant height in 75DAP and at 120DAP. Highest branch number per plant was found in BARI Soybean-6 (23.69) in the conventional tillage system. There was highly significant (p<0.001)effect of branch number in tillage and varieties. Tillage systems and varieties also had a significant (p<0.05) effect on Chlorophyl content at 90DAP. Number of seed per pod and number of seed per plant also had highly significant (p<0.001) effect on tillage systems and varieties. Biological yield had a significant (p<0.05) effect on tillage systems and varieties. Tillage system and varieties had no significant (p<0.05) effect on nutrient composition like DM, Ash, CP, EE etc. But tillage systems and varieties had significant effect (p<0.05) on CF. The highest CF was found in BD-4 in no tillage which is V1T2(9.27%). The highest CP (38.15%) was found in BARI Soybean-6 in conventional tillage. Overall, BARI Soybean-6 showed the highest yield and nutrient composition among two varieties. It may be concluded that, BARI Soybean-6 with a conventional tillage (V2T1) was found best interaction in respect of most of the agronomic growth parameters and nutritional composition in coastal areas.