He said that the prices of the 50 kg packet of DAP fertiliser has been increased to Rs 1,900 as compared to Rs 1,200 earlier. "The steep price hike of Rs 700 per bag has never happened in last 73 years," he said, adding that in 2020-21 about 93 lakh MT of fertilizer will be used and by increasing the prices the farmers will have to face an additional burden of Rs 13,020 crore.