Fertilizer Sector reforms – NBS, bio-fertilizers, Neem coating, etc.

What is Liquid Nano Urea?


From UPSC perspective, the following things are important :

Prelims level: Liquid Nano Urea (LNU)

Mains level: India's fertilizer subsidy

During his visit to Gujarat, Prime Minister inaugurated the country’s first liquid nano urea plant at Kalol.

Liquid Nano Urea (LNU)

  • Urea is chemical nitrogen fertiliser, white in colour, which artificially provides nitrogen, a major nutrient required by plants.
  • LNU is essentially urea in the form of a nanoparticle.
  • It is sprayed directly on the leaves and gets absorbed by the plant.
  • Fertilisers in nano form provide a targeted supply of nutrients to crops, as they are absorbed by the stomata, pores found on the epidermis of leaves.
  • According to IFFCO, liquid nano urea contains 4 per cent total nitrogen (w/v) evenly dispersed in water.
  • The size of a nano nitrogen particle varies from 20-50 nm. (A nanometre is equal to a billionth of a metre.)

Significance of LNU

  • This patented product is expected to not only substitute imported urea, but to also produce better results in farms.
  • Apart from reducing the country’s subsidy bill, it is aimed at reducing the unbalanced and indiscriminate use of conventional urea.
  • It will help increase crop productivity, and reduce soil, water, and air pollution.

Using LNU

  • The liquid nano urea produced by Indian Farmers Fertiliser Cooperative (IFFCO) Limited comes in a half-litre bottle priced at Rs 240, and carries no burden of subsidy currently.
  • By contrast, a farmer pays around Rs 300 for a 50-kg bag of heavily subsidised urea.
  • According to IFFCO, a bottle of the nano urea can effectively replace at least one bag of urea.

How efficient is LNU?

  • While conventional urea has an efficiency of about 25 per cent, the efficiency of liquid nano urea can be as high as 85-90 per cent.
  • Conventional urea fails to have the desired impact on crops as it is often applied incorrectly, and the nitrogen in it is vaporized or lost as a gas.
  • A lot of nitrogen is also washed away during irrigation.
  • Liquid nano urea has a shelf life of a year, and farmers need not be worried about “caking” when it comes in contact with moisture.


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