Fertiliser use is profitable if each rupee spent on fertiliser produces crop worth at least

Answer: Option D

Fertilizer use is profitable if each rupee spent on fertilizer produces a crop worth at least Rs. 2.
A fertilizer is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments.
Data on the fertilizer consumption per hectare of arable land in 2012 are published by The World Bank.