Economy
2016
Agriculture Schemes
Agriculture and Environment
Why does the Government of India promote the use of Neem-coated Urea’ in agriculture?
C.Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields
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
B.Neem coating slows down the rate of dissolution of urea in the soil
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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