Utilization of Agro-industrial Wastes for the Improvement of Vegetative and Yield Characters in Black Gram (Vigna mungo L.)

An experiment was conducted to analyse the effect of the interaction between different rates of composted press mud, composted coirpith, farmyard manure and NPK on vegetative and yield parameters of black gram ( Vigna mungo L. Var.Co. ADT5). On the 25^th day a significant increase in ischolar_main length( T₂- Composted coirpith), shoot length (T₉- Composted coirpith + 25 % NPK), number of leaves (T₆ -Composted coirpith + 50 % NPK), number of nodules (T₂- Composted pressmud), fresh weight (T₁₁- FYM + 25% NPK), dry weight (T₁₀- Composted pressmud + 25%NPK) was observed. On the 45^th day an increase in ischolar_main length (T₁₁- FYM +25% NPK), shoot length (T₁₀- Composted pressmud + 25%NPK), number of leaves (T₈ - FYM+50% NPK), number of nodules (T₆- Composted coirpith + 50% NPK), number of flowers (T₅ - NPK 100%), fresh weight (T₇ - Composted pressmud + 50%NPK), dry weight (T₇ - Composted pressmud + 50%NPK) were noted. On the 55^th day a significant increase in ischolar_main length (T₉ - Composted coirpith + 25% NPK), shoot length(T₁₀ - Composted pressmud + 25%NPK), number of nodules (T₃ - Composted pressmud), number of fruits(T₁₁ - FYM+25% NPK), fresh weight(T₇ - Composted pressmud + 50%NPK), dry weight (T₇ - Composted pressmud + 50%NPK) was observed. And on 75^th day the yield parameters number of pods/plant, length of pods, weight of pods, number of seeds/pod , weight of seed/pod, pods fresh weight and dry weight were significantly increased in T₁₁ (FYM + 25%NPK) treatment. Thus, in conclusion composted coirpith, composted pressmud and FYM increased the vegetative growth and FYM with 25%NPK increase the yield of black gram.