process of green manuring
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1. Green manure crop can be grown in any type of soil, provided there is sufficient rainfall or alternatively irrigation available.
2. To ensure success with a leguminous green manure crop is to inoculate the seed with the proper strain of bacteria.
3. The green manure crop should be sown with a higher seed rate than usual so that there will be a good canopy produced very quickly. The usual seed rate for sannhemp is about 40 to 50 kg per hectare.
4. The production of green manures is limited by the plant food elements (plant nutrients) deficient in the soil. Leguminous green manure plants are able to fix atmospheric nitrogen. When the soil is rich in nitrogen, leguminous plants do not fix nitrogen so well, as when grown in poor soils. The application of phosphatic fertilizers improves the growth of leguminous crop markedly and promotes the fixation of nitrogen by profuse nodulation.
5. The best stage at which the crop should be incorporated in the soil as a green manure is when it reaches the flowering stage. Sannhemp crop is ready for turning—in at the age of 7 to 8 weeks whereas dhaincha crop is ready for incorporation when 5 to 6 weeks old.
6. Burying of green manure crop is done in the different ways. In some case the plants are cut close to the ground and the green material is put in the furrows opened by a mould board plough, and is later buried. One of the method is to plank the material down with a heavy plank or leg, and then plough the field. The other method is to mix the uprooted or cut plant material (green leaf manure) by means of disc harrow. In drier areas this method has been proved to be better than ploughing in.
7. Immediately after ploughing the material, careful packing of the soil should be done by suitable implements to ensure proper decomposition. Packing (compacting) is especially necessary if the soil moisture supply is deficient.
8. Under certain favourable circumstances, green manure crop such as dhaincha can be sown in between the rows of cotton or Jowar. When the dhaincha is sufficiently tall it can be uprooted and mixed with the soil by inter-cultivations.
9. Under limited moisture supply condition, it may be advisable to grow the green manure crops in one field and add the green material to another field. By doing this, the moisture required for growing the green manure crop is saved.
10. For proper decomposition, in light soils the crop should be buried deeper than that in the heavy ones.
2. To ensure success with a leguminous green manure crop is to inoculate the seed with the proper strain of bacteria.
3. The green manure crop should be sown with a higher seed rate than usual so that there will be a good canopy produced very quickly. The usual seed rate for sannhemp is about 40 to 50 kg per hectare.
4. The production of green manures is limited by the plant food elements (plant nutrients) deficient in the soil. Leguminous green manure plants are able to fix atmospheric nitrogen. When the soil is rich in nitrogen, leguminous plants do not fix nitrogen so well, as when grown in poor soils. The application of phosphatic fertilizers improves the growth of leguminous crop markedly and promotes the fixation of nitrogen by profuse nodulation.
5. The best stage at which the crop should be incorporated in the soil as a green manure is when it reaches the flowering stage. Sannhemp crop is ready for turning—in at the age of 7 to 8 weeks whereas dhaincha crop is ready for incorporation when 5 to 6 weeks old.
6. Burying of green manure crop is done in the different ways. In some case the plants are cut close to the ground and the green material is put in the furrows opened by a mould board plough, and is later buried. One of the method is to plank the material down with a heavy plank or leg, and then plough the field. The other method is to mix the uprooted or cut plant material (green leaf manure) by means of disc harrow. In drier areas this method has been proved to be better than ploughing in.
7. Immediately after ploughing the material, careful packing of the soil should be done by suitable implements to ensure proper decomposition. Packing (compacting) is especially necessary if the soil moisture supply is deficient.
8. Under certain favourable circumstances, green manure crop such as dhaincha can be sown in between the rows of cotton or Jowar. When the dhaincha is sufficiently tall it can be uprooted and mixed with the soil by inter-cultivations.
9. Under limited moisture supply condition, it may be advisable to grow the green manure crops in one field and add the green material to another field. By doing this, the moisture required for growing the green manure crop is saved.
10. For proper decomposition, in light soils the crop should be buried deeper than that in the heavy ones.
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