How Costly Is It for Poor Farmers to Lift Themselves Out of Subsistence?

acreage agricultural production agricultural products arbitrage balance sheets cane sugar cash crops cash income commercial farming consumer prices cotton cropland development economics diversification equations expenditure export exports extreme poverty farm size farmer farmers farms flavor food crops hurdles intensive farming land ownership livestock market prices market structure marketing marketing boards mills opportunity costs poverty alleviation price indices price volatility producer prices rural poverty sales sharecropping subsistence subsistence farming sugar sugar cane surplus valuation volatility