India, June 2 -- justify;">Rising cultivation costs, declining soil fertility and concerns over excessive use of conventional fertilisers are driving interest in nano fertilisers among farmers, with nano urea and nano DAP emerging as increasingly popular alternatives in several agricultural regions.

Agriculture experts say the shift reflects a broader move towards scientific and sustainable farming practices aimed at improving productivity while reducing input costs and environmental impact.

According to experts, farmers in major paddy-growing regions, including Chhattisgarh, typically use two to three bags of urea and one bag of DAP per acre. At current prices, expenditure on these fertilisers alone can range between Rs.1,900 and Rs.2,...