in the middle of this year, i wrote about india’s weakening agricultural soils.
According to “Degraded and Waste Lands of India” , a report by the Indian Council for Agricultural Research (ICAR) and the National Academy for Agricultural Sciences, about 141 million hectares of our total geographical area of about 328.2 million hectares is under cultivation. Of this, about 100 million hectares — or 70% — is heading down a path where it will be incapable of supporting farming. What is going wrong? Farmers are making the soil work more, growing two or more crops a year, instead of one. This unplanned fertilization is exacerbating nutrient shortages and changing soils’ chemical composition . Levels of organic carbon in soil are dropping across the country, making soils more vulnerable to erosion and possibly resulting in the number of earthworms falling.
Not only are these excesses and imbalances reducing the productivity and life of soils, they are now starting to show up in our bodies.
in april 2010, to encourage more balanced fertilisation, the government of india came up with something called the nutrient-based subsidy. unlike the old system where only basic fertilisers containing nitrogen, potassium and phosphate were subsidised, the government extended the subsidy to sulphur, boron and zinc as well. and changed how subsidy was calculated as well — moving to a system where subsidy was pegged, not to cost of production, but to the nutrient content of the fertiliser.
the government reckoned that the NBS would give companies an incentive to produce more complex fertilisers fortified with micronutrients.
in this story published yesterday, i say that, “two years after its introduction, early signals suggest the NBS is not showing the desired results”.
Take NPK. In last year’s kharif, the NPK ratio was around 4.4:2.6:1. This kharif, it has worsened to 10.8:4.9:1… What about micronutrients? It’s hard to say. The fertiliser ministry simply does not collect data on micronutrient consumption. However, data collated by industry body Fertiliser Association of India (FAI) shows a puzzling trend. The consumption of zinc, ferrous and copper sulphates showed a modest rise over the last seven years, but that did not hold good for nutrients such as manganese sulphate, borax acid and molybdenum.
do take a look.