The centre has already come out with a four-volume report suggesting ways to boost farmers' income, which states will have to study and see how best it can be implemented in each state, he said.
Not only productivity of various crops needs to be raised, but also focus on allied farm activities like timber cultivation and honeybee cultivation is required, he added.
Addressing a two-day national conference to evolve a sowing strategy for upcoming winter (rabi) season, Singh said: "The government's aim is to increase productivity and ensure farmers get the remunerative price for their produce."
While implementing these schemes, he said, states have to "devise their own strategy" to boost farmers' income by focusing on production-to-post-harvest activities.
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"It is our responsibility to make special efforts to improve the agricultural sector so that it provides strong trade opportunities," he added.
Echoing similar views, Agriculture Secretary S K Pattanayak said, "doubling farmers' income by 2022 should be the mantra and all of us should be working towards it. The seven key schemes have to be operationalised at field level."
To ensure farmers get support price in times of price crash, the secretary said the centre has drafted a new market assurance scheme and asked states to study and share how they wish to implement.
On organic farming, he said only Sikkim has been declared a fully organic state till now. The centre's target is to see entire north east grow fully organic. Funds are in place but states have to show more interest.
Ministers of State for Agriculture Gajendra Singh Shekhawat and Krishna Raj were also present at the event.