Nutrient Use Efficiency in Indian Agriculture: N 30–45%, P 15–25%, K 50–60% — Government Focuses on Balanced Use and Higher Farm Returns: Smt. Anupriya Patel

1. At a Glance

• Nutrient Use Efficiency (NUE) = proportion of applied fertilizer nutrients absorbed/utilised by crops; in India: N 30–45%, P 15–25%, K 50–60% as per ICAR [S1].
• Statement by Smt. Anupriya Patel, MoS, Ministry of Chemicals & Fertilizers (Department of Fertilizers), 10 March 2026 in Parliament context [S1].
• UPSC relevance: links food security, fertilizer subsidy bill, soil health, climate (N₂O emissions), and schemes like PM-PRANAM, NBS, Nano Urea [S1][S2][S4].

2. Why in the News

• PIB release dated 10 March 2026 by Department of Fertilizers flagged declining nutrient response and persistent low NUE; Minister outlined government strategy for balanced use and higher farm returns [S1].
• ICAR's Long-Term Fertilizer Experiments (LTFE) show falling partial factor productivity of nutrients due to NPK imbalance [S1][S3].

3. Background & Evolution

• 1960s Green Revolution → high-analysis urea uptake; subsidy regime entrenched N-overuse.
• 1977: Retention Price Scheme for urea.
• 2010: Nutrient Based Subsidy (NBS) for P&K fertilizers — urea kept outside, distorting NPK ratio [S5].
• 2015: Soil Health Card Scheme launched to enable site-specific recommendations.
• 2021: Nano Urea (IFFCO) commercialised; 2023: Nano DAP approved.
• June 2023: PM-PRANAM approved by Union Cabinet to incentivise states to cut chemical fertilizer use [S2].
• 2025–26: Nationwide Nano Urea Plus field demonstrations in 100 districts [S2].

4. Core Static Facts

• Definition (NUE): % of applied nutrient absorbed and used by the crop for yield [S1].
• NUE benchmarks (India, ICAR): Nitrogen 30–45 %, Phosphorus 15–25 %, Potassium 50–60 % [S1].
• Losses pathways: leaching, volatilisation, runoff; residual/fixed in soil [S1].
• Ideal NPK ratio: 4:2:1 (recommended); actual is skewed toward N due to urea subsidy [S1].
• Implementing Ministry: Ministry of Chemicals & Fertilizers — Department of Fertilizers; research arm ICAR (under Min. of Agriculture) [S1].
• Key approach endorsed: 4R Nutrient Stewardship — Right source, Right rate, Right time, Right place [S1].
• PM-PRANAM incentive: 50 % of fertilizer subsidy saved by a State/UT (vs. 3-yr avg consumption of Urea/DAP/MOP/NPK) returned as grant [S2].
• PM-PRANAM outcome (FY 2023-24): 14 States cut chemical fertilizer use by 15.14 LMT vs prior 3-yr avg [S2].
• Nano Urea trials: 448 (2024-25) + 484 (2025-26 till 23.03.2026) farmer field trials by IFFCO across 15 Agro-Climatic Zones [S2].

5. Multi-Dimensional Analysis

Economic - Fertilizer subsidy is a major fiscal head (~₹1.7 lakh crore range in recent budgets); low NUE = wasted subsidy [S1][S2]. - Improving NUE raises farm-gate returns by cutting input cost per quintal of output [S1].

Environmental - Unused N volatilises as N₂O (greenhouse gas, ~273× CO₂ GWP) and leaches as nitrates → groundwater contamination (blue-baby syndrome) [S1]. - P runoff drives eutrophication of inland water bodies. - ICAR advocates Integrated Nutrient Management (INM) — chemical + bio-fertilizers + green manure + crop residue [S1].

Scientific / Technological - Nano Urea/Nano DAP — higher surface area, foliar absorption, claimed higher NUE [S2]. - Sulphur-coated urea, Neem-coated urea (mandatory since 2015) — slows N release. - ICAR LTFEs show declining partial factor productivity of N — diminishing yield response per kg nutrient [S1].

Administrative / Governance - Federal split: subsidy policy = Centre; extension/Soil Health Card delivery = States. - PM-PRANAM uses fiscal incentive to align state behaviour with sustainability [S2].

6. Recent Developments (last 12-18 months)

• 10 Mar 2026: PIB statement by Anupriya Patel quantifying NUE and outlining balanced-use strategy [S1].
• 2025-26: Nano Urea Plus demonstrations rolled out in 100 districts via DoF–fertiliser company partnership [S2].
• 2024-25 & 2025-26: IFFCO completed 932 cumulative Nano Urea field trials across 15 ACZs [S2].
• FY 2023-24: 14 States saved 15.14 LMT chemical fertilizer under PM-PRANAM [S2].

7. Prelims Hooks

• NUE for Nitrogen in India = 30–45 % (ICAR estimate) [S1].
• NUE for Phosphorus = 15–25 %, lowest among the three [S1].
• NUE for Potassium = 50–60 %, highest among the three [S1].
• Ideal NPK ratio = 4:2:1 [S1].
• PM-PRANAM full form: PM Programme for Restoration, Awareness Generation, Nourishment and Amelioration of Mother-Earth [S2].
• PM-PRANAM grant = 50 % of subsidy saved to the State/UT [S2].
• 4R Nutrient Stewardship: Right source, rate, time, place [S1].
• Nano Urea developed/commercialised by IFFCO (2021) [S2].
• NBS scheme (2010) covers P & K fertilizers, NOT urea [S5].
• Neem-coated urea made 100 % mandatory in 2015.
• Department of Fertilizers is under Ministry of Chemicals and Fertilizers (NOT Ministry of Agriculture) [S1].
• ICAR research arm conducts Long-Term Fertilizer Experiments (LTFE) [S1].
• Nano Urea Plus demos: 100 districts, across 15 Agro-Climatic Zones [S2].

8. Mains Relevance

• GS-III — Agriculture (Major crops, cropping patterns, issues of subsidies, MSP, PDS); Environment (soil degradation, GHG); Science & Tech (nano-fertilizers).
• Syllabus headings: "Issues related to direct & indirect farm subsidies", "e-technology in aid of farmers", "Land reforms", "Conservation, environmental pollution".
• Probable Mains stems: 1. "India's low Nutrient Use Efficiency is as much a fiscal problem as an agronomic one." Discuss with reference to PM-PRANAM and the Nutrient Based Subsidy regime. 2. "Examine the potential and limitations of nano-fertilizers in improving Nutrient Use Efficiency and reducing the fertilizer subsidy burden in India." 3. "Discuss how Integrated Nutrient Management (INM) and the 4R stewardship framework can address declining factor productivity in Indian agriculture."

9. Related Topics to Study Next

• PM-PRANAM Scheme — flagship instrument for balanced fertilizer use [S2].
• Nutrient Based Subsidy (NBS), 2010 — root of NPK imbalance [S5].
• Soil Health Card Scheme (2015) — diagnostic backbone for NUE.
• Nano Urea & Nano DAP — IFFCO innovations.
• Neem-Coated Urea policy (2015) — slow-release N strategy.
• Per Drop More Crop / Micro-irrigation (PMKSY) — fertigation improves NUE.
• Natural Farming (NMNF) — alternative pathway to chemical reduction.
• One Nation One Fertilizer / PMBJP (Bharat brand) — branding & distribution reform.

10. Common Errors / Trap Areas

• Wrong ministry: NUE & fertilizer subsidy sit with Min. of Chemicals & Fertilizers (DoF), not Min. of Agriculture; ICAR is under Min. of Agriculture though [S1].
• Confusing NUE ranges: K is highest (50–60), P is lowest (15–25) — opposite of intuition for many aspirants [S1].
• NBS does NOT cover urea — urea remains under statutory price control [S5].
• PM-PRANAM is incentive to States, not direct DBT to farmers [S2].
• 4:2:1 is the desired NPK ratio, not the actual (which is far more N-heavy).

11. Sources

• [S1] Nutrient Use Efficiency in Indian Agriculture: N 30–45%, P 15–25%, K 50–60% — PIB, Dept. of Fertilizers, 10 Mar 2026 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2237709 — (tier 1)
• [S2] PM-PRANAM Scheme: Incentivising States/UTs to Reduce Chemical Fertilizer Use — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2239623 — (tier 1)
• [S3] ICAR Long-term fertilizer experiment on integrated nutrient management — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2037422 — (tier 1)
• [S4] Government Promotes Balanced Use of Fertilizers and Sustainable Practices — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2244397 — (tier 1)
• [S5] Nutrient Based Subsidy (NBS) scheme details — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2112304 — (tier 1)