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Fertiliser registration and nutrient use efficiency

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Prelims and Mains

New fertilisers are registered under the Fertiliser (Control) Order, 1985: a dossier, two season bio efficacy trials by the Indian Council of Agricultural Research (ICAR) and State universities, and Central Fertiliser Committee review.

  • Water soluble fertilisers have needed only general specifications since 2015.
  • Urea and diammonium phosphate (DAP) have the lowest nutrient use efficiency, nitrogen being lost as ammonia and as nitrate into groundwater and phosphorus locking into insoluble compounds; controlled release and water soluble fertilisers do far better.
  • Under the Nutrient Based Subsidy the subsidy is fixed per nutrient and retail prices of phosphatic and potassic fertilisers follow world markets, while urea stays price controlled.
  • Cheaper urea encourages excess nitrogen and unbalanced soils.

Nutrient use efficiency by fertiliser type

FertiliserShare of the nutrient the crop takes up
Urea30 to 40 per cent
DAP15 to 25 per cent
Controlled release60 to 70 per cent
Water soluble80 to 95 per cent
The fertilisers India subsidises most heavily deliver the smallest share of their nutrient to the crop.Source: The Indian Express, 12 June 2026

What changed

  1. 12 Jun 2026

    • The fertiliser subsidy for 2026 to 2027 is set to far exceed the amount budgeted.
    • The Agriculture Ministry agreed in principle to exempt fertilisers meeting quality and safety standards from mandatory field trials.

    The Indian Express, 12 Jun 2026: Why government is looking to issue faster approvals for new fertilisers (opens in a new tab) · The Indian Express, 15 Jun 2026: Urea price crash opens window for reforms in India (opens in a new tab)

Punjab's paddy and its groundwater

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Prelims and Mains

Paddy is a water hungry kharif crop: in Punjab it needs about 25 to 30 irrigation cycles a season.

  • It has assured procurement at the minimum support price, timely payment, free electricity for irrigation and a mandi network, which cotton and maize lack.
  • So with total kharif area fixed, area vacated by other crops moves to paddy.
  • Nearly 80 per cent of Punjab's groundwater blocks are overexploited.
  • A legume such as groundnut fixes nitrogen through root nodules, saving urea for the next crop.

Spring maize versus spring groundnut

Spring maizeSpring groundnut
Irrigations12 to 193 to 6
Duration90 to 100 days110 to 115 days
Soil effectnonefixes nitrogen, breaks pest cycles
Groundnut needs a fraction of the water spring maize draws in Punjab's hottest months, and leaves nitrogen in the soil for the next crop.Source: The Indian Express, 6 June 2026

What changed

  1. 14 Jun 2026New

    • Punjab's 2026 paddy area is expected to match or exceed its record, while cotton area fell to its lowest ever.
    • Transplanting began on 1 June under a staggered three zone schedule to cut peak power demand and conserve groundwater.
    • The High Court struck down the State's ban on hybrid paddy, holding that seeds notified under the Seeds Act, 1966 cannot be barred administratively.
    • Hybrids yield more and mature in 125 to 130 days, saving water and giving time for stubble management.
    • But seed must be bought each season, and millers allege outturn below the 67 per cent minimum.

    Mains: The dispute sets productivity and water saving against seed dependence and procurement norms, and needs a science based, transparent policy.

    The Indian Express, 3 Jun 2026: Why Punjab could see record paddy cultivation despite repeated diversification drives (opens in a new tab) · The Indian Express, 14 Jun 2026: Why hybrid paddy continues to divide Punjab's agricultural community (opens in a new tab)

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