Green Manure as a component of Nutrient Management (INM)

1. Green Manure as a component of Nutrient Management (INM)  Next

2. Green manure as a component of INM Introduction • Green manuring crop such as Dhaincha (Sesbania spp.) sunhemp (Crotalaria juncea), etc. can be grown before the rice season. • These crops provide sufficient quantity of nitrogen. Green manure helps in increasing apparent use efficiency of K when combined with 50% of the recommended doze of NPK. • It also has residual effect on the next crop and minimize the adverse effects of AI3+ and /or Fe 2+ in acidic lateritic soils through the chelation of these ions by organic molecules liberated from FYM in the course of mineralization. • They provide sufficient quantity of organic matter which in turn helps in development of good soil structure. Next End

3. Green manure as a component of INM • Green manure improves nutrient use efficiency in various ways : • Green manuring through Sesbaniaaculeata is equivalent to 60 kg inorganic N/ha. • Incorporation of mungbean after picking pods results in savings • of 60 kg inorganic N/ha for the rice crop • Alley cropping to Leucaenaleucocephala, Gliricidiasepium and Acacia mangium can provide 100-300 kg N/ha per year • Pruning of Sesbaniarostrata planted as hedgerows provides 3-4 t/ha dry matter after decomposition, it releases an average of 70 kg N/ha Next Previous End

4. Green manure as a component of INM • Besides above, green manure helps in • Increasing apparent use efficiency of K when combined with 50% of the recommended NPK. • Having residual effect on the next crop. • Minimizing the adverse effects of AI3+ and /or Fe 2+ in acidic lateritic soils through the chelation of these ions by organic molecules liberated from FYM in the course of mineralization. Next Previous End

5. Green manure as a component of INM • Use of green manure in crop rotation before transplanting rice. • Supplements about 50% of the total N requirement of rice • Provides about 75-100 % of the crop’s requirement in the case of rain fed lowlands when the requirement for N is relatively low (60-80 kg N/ha). • Has a mobilizing effect on PK and micronutrients in the soil. • Reduces the leaching and gaseous losses of N, thus increasing the efficiency of applied plant nutrients. • Can skip the P allocation to rice when 30 kg P2O5/ha is applied to the green manure crop. Next Previous End

6. Green manure as a component of INM • * Provides 20-25 kg N/ha • * Improves the soil organic matter. • * Improves physico-chemical and biological condition of the soil It is quite interesting that incorporation of crop residues before rice Inclusion of grain/fodder/legume crops in crop rotation helps in : • Contributing as much as 50-60 kg N/ha to the succeeding crop of rice • Contributing about 60 kg N/ha when whole plant of mungbean is incorporated into the soil after picking the pods in the summer season Next Previous End

7. Green manure as a component of INM Grow green manuring crops such as Dhaincha (Sesbania spp.) sunhemp (Crotalaria juncea), etc.,before the rice season. Green Manure cropAcacia mangium and Sesbania rostrata as hedgerows in alley. Before transplanting the rice crop, incorporate whole plants of leguminous crop grown in summer (such as greengram, blackgram and cowpea) after picking the pods. Green Manure crop Next Previous End

8. Green manure as a component of INM How INM brings happiness? INM brings happiness to the farmers by producing high yield and keeping soil in good health condition. End Previous