The nation's net farm income is the lowest since 2002, and with another year of low commodity prices, demand for agriculture loans is surging as farmers struggle to make ends meet. [...] Agricultural lenders say they are seeing people who had operating loans requesting larger ones, and some who had operated with cash are borrowing money. But it's unlikely the current run on loans will be anything like the farm credit crisis of the 1980s, when those who survived the significant year-to-year losses were without large debts to repay. ...