Economy
2016
Agriculture Schemes
Agriculture and Environment
Why does the Government of India promote the use of Neem-coated Urea’ in agriculture?
B.Neem coating slows down the rate of dissolution of urea in the soil
D.It is a combination of a weedicide and a fertilizer for particular crops
A.Release of Neem oil in the soil increases nitrogen fixation by the soil microorganisms
C.Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields
Correct Answer: Option B
The Government of India promotes Neem-coated Urea to improve nitrogen use efficiency in agriculture.
Here's why:
- Reduced Nitrogen Loss: Ordinary urea, when applied, converts to ammonium carbamate, leading to nitrogen loss through ammonia volatilization (8-10% loss). It also transforms into nitrates, which can leach into groundwater or denitrify into gaseous nitrogen and nitrous oxide under anaerobic conditions.
- Slower Nitrate Formation: Neem possesses properties that hinder nitrogen loss at each stage. It slows down the process of nitrate formation, reducing the availability of excess nitrate for denitrification.
- Diversion Prevention: Neem coating prevents the diversion of urea for non-agricultural purposes.
Therefore, Neem coating slows down the rate of dissolution of urea in the soil.
Option B is the most appropriate answer.
Sources:
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