Nitrogen: N
- Nitrogen’s dual nature: Essential for life (DNA, proteins, ATP) but excess causes environmental damage.
- India’s N₂O emissions: Second largest emitter globally, posing climate risks due to N₂O’s high global warming potential (300x CO₂).
- The Nitrogen Cycle: A natural process converting atmospheric nitrogen into usable forms for plants and animals.
- Haber-Bosch process: Revolutionized agriculture via synthetic fertilizers, enabling population growth, but led to excess reactive nitrogen production.
- Environmental risks: Excess nitrogen (ammonia, nitrate, nitrous oxide) leads to eutrophication, soil acidification, air pollution, and N₂O emissions.
- N₂O as a potent greenhouse gas: Third most significant, with emissions rising, necessitating urgent action to limit warming.
- UN assessment: Highlights the need to cut N₂O emissions by over 40% through transforming food production and nitrogen management.
- India’s agricultural practices: Green Revolution incentivized cereal production, reducing leguminous plants that naturally fix nitrogen.
- Reactive nitrogen losses: About 80% of applied nitrogen fertilizer is lost to the environment, costing billions annually.
- India’s N₂O emission sources: Primarily from agricultural soils (chemical fertilizers, especially urea, dominate).
- Health impacts: Nitrogen oxide emissions contribute to air pollution, causing respiratory diseases and premature deaths.
- Potential solutions: Improving nitrogen use efficiency (neem-coated urea, nano-urea), promoting organic farming, and halving urea production.
- Call to action: India can significantly reduce urea production to decrease nitrous oxide and its ill effects.