Indo Gangetic plain global hotspot of atmospheric ammonia

• The Indo- Gangetic Plain (IGP) is the global hot-spot of atmospheric ammonia (NH3) due to intense agricultural activities and fertilizer production there, according to researchers at The Indian Institute of Technology (IIT) Kharagpur.

About:

• IGP is the global hot-spot of NH3 due to intense agricultural activities and fertilizer production.

• There is a positive correlation of NH3 with total fertilizer consumption and temperature since high temperature favours volatilization.

• Agricultural emission is negatively correlated with total precipitation as wet deposition helps removal of NH3.

• NH3 plays a key role in the deterioration of air quality by actively contributing to the formation of secondary aerosols.

Agricultural emissions in India:

• Agriculture sector is responsible for climate change due to Greenhouse gas (GHG) emissions.

• They are generated through the production and use of agricultural inputs (mainly water, fertilisers, and pesticides) farm machinery, soil disturbance, residue management and irrigation.

• Agriculture and livestock account for 18% of gross national emissions of C02 in India.

Steps to decrease emissions:

• Low External Input Sustainable Agriculture (LEISA), which seek to optimise the use of locally available resources replacing external inputs.

• Zero Budget Natural Farming (ZBNF), a low-input, climate-resilient type of farming that eliminates the use of chemical fertilisers and pesticides.

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Mains Paper 3: Environment

Prelims level: Indo- Gangetic Plain

Mains level: Highlights the agricultural emissions in India and measure taken

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