The aims were to evaluate the impact of organic, conventional and traditional production systems on yield, proximate composition and mineral content of tubers and soil physico-chemical and biological properties in greater yam (Dioscorea alata). Organic farming ( t ha-1 ) produced significantly higher yield over conventional practice ( t ha-1 ) by 24%. A net profit of Rs 3,16,534 ha-1 , which was 38% higher over chemical based farming was obtained under organic management in greater yam Tuber quality was improved with slightly higher dry matter, starch and crude protein contents. |