Finance Minister Nirmala Sitharaman, speaking at the Munich Leaders Meeting, said fertiliser prices have "gone through the roof" and that no country can sustain buying at that level. By her account, a unit sold to the farmer at ₹300 costs ₹3,000 to import, with the government bearing nearly ₹2,700.Sitharaman said India is trying to increase domestic production of urea and phosphates, but that it will be a long haul. She said shipping lines and c…