Green manure has been used since ancient times to increase soil fertility and productivity.
It improves the structure of the soil along with providing nutrients.
In agriculture, green manure is called a subsidiary crop, which is cultivated mainly for the purpose of increasing the nutrients in the soil and to supply organic matter in it.
This type of crop is mixed by ploughing the field at green stage.
The field where green manure has to be used, grow green manure first before growing the main crop in the same field.
After a certain period of time, with the help of leveller, levelled the soil & then use MB plough in the field then left green manure crop to rot in the soil.
Green manure crop can also be grown elsewhere rather than in the main field, after that the branches of trees are cut and mixed in the main field.
The use of green manure not only makes the nitrogen available in the soil, but also improves the physical, chemical and biological condition of the soil.
Use of green manure also reduces soil borne diseases.
Green manure should not be used in areas with low rainfall. In these areas moisture conservation is very important for the main crop.
For green manure, pulses crops can be used in crops such as sunhemp, dhaincha, cowpea, urad, moong, cluster bean etc. These crops grow quickly in a short time, the leaves are very heavy and in large numbers and their fertilizer and water requirement is low & it gives more organic material at a lower cost.
Use of sunhemp in places where water is available in sufficient quantity (high rainfall areas).
Use Dhaincha in places of dry conditions and in problematic land like in alkaline condition.
Use cluster bean in areas with less rainfall & less fertile soil.
Use cowpea in alkaline soil with good water drainage and use moong, urad in kharif or summer season in a land where there is no waterlogging.