The correct option is D The main products of the fertiliser industries are nitrogenous fertilisers, phosphatic fertilisers, as well as Diammonium phosphate.
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The fertiliser industry has expanded to several parts of the country in the past few decades due to green revolution. The country does not have any reserves of commercially usable potash or potassium compounds in any form. A large chunk of potash is imported to our country. The main products of the fertiliser industries are nitrogenous fertilisers, phosphatic fertilisers, as well as Diammonium phosphate. Urea is one of the most important nitrogenous fertilisers.