NITI Aayog Vice Chairman Rajiv Kumar on Monday said that zero budget natural farming (ZNBF) is one of the most potent methods to double the farmers' income by 2022. "A paradigm shift is needed in Indian agriculture because if you want to double farmers' income. You have to not only look after the prices, but it is much more important to reduce the cost of agriculture. Zero budget natural farming is one of the most potent methods of achieving it," said Kumar.