Context:
Telangana is witnessing a shortage of urea, a key soil nutrient for crop growth, leading to long queues outside fertilizer shops. The situation has become a political flashpoint between the Central government, the Telangana government, and opposition parties.
What is Urea?
- Urea is a nitrogen-rich chemical fertilizer (46% nitrogen content – the highest among solid nitrogenous fertilizers).
- Chemical formula: CO(NH₂)₂.
- It is white, crystalline, and highly soluble in water.
Relevance in Agriculture
- Essential Nutrient: Provides nitrogen, a key element for plant growth, protein synthesis, and chlorophyll formation.
- Widely Used: India is the world’s second-largest consumer of urea (after China).
- Cost-effective: Due to government subsidies, urea is the cheapest source of nitrogen for farmers.
- Food Security: Crucial for sustaining India’s food grain production and meeting fertilizer needs of small and marginal farmers.
Applications in Agriculture
- Soil Application: Urea granules are applied directly to soil for crops like wheat, rice, maize, sugarcane, and cotton.
- Foliar Spray: A diluted urea solution is sprayed on leaves for quick nitrogen absorption.
- Blending: Mixed with other fertilizers (DAP, MOP) to balance nutrients.
- Coated Urea: Neem-coated urea reduces nitrogen losses due to volatilization and improves nutrient use efficiency.
- Liquid Urea: Used in fertigation (applying fertilizers through irrigation).
Challenges with Urea Usage
- Overuse: Leads to soil nutrient imbalance, declining fertility, and lower crop yields.
- Environmental Issues: Nitrogen loss causes water pollution (nitrate leaching) and air pollution (nitrous oxide emissions – a greenhouse gas).
- Subsidy Burden: Heavy government subsidy (₹2 lakh crore+ annually) makes it prone to diversion and black marketing.
Government Measures
- Neem-coated Urea (2015): Made mandatory to reduce misuse and improve efficiency.
- Direct Benefit Transfer (DBT) in Fertilizer Subsidy.
- Promotion of Nano Urea by IFFCO as an eco-friendly, efficient alternative.
