The NDA government is bringing rapid infrastructural development in the rural sector to raise farmers' income and the Prime Minister was prepared to invest more in the agriculture sector and food processing by 2022 to make agriculture more profitable, Union Home Minister Rajnath Singh said here today. Stating this while delivering the inaugural address at the National Krishik Samaj convention, he said that since the input cost of agriculture was increasing, any amount of subsidy would fall short. He also said farmers' should engage in poultry, animal husbandry and fishing to increase their income. Calling farmers a brave community, he said, unlike industry, the agriculturist engages in farming knowing fully well that the sector was not profitable. To protect their interest, the NDA government has been giving insurance benefit even for 30 per cent crop loss, he said. Singh said at least one son of a farmer should engage himself in other sectors, apart from farming. Even today, over 55 per cent of the population is engaged in agriculture and the Green Revolution should be a permanent feature to attract youth into agriculture, he added. It was BJP in Karnataka and other states which in the past brought down the interest rate on farm loans from four per cent to zero as per his advice as the then BJP president, Singh said.