The U.S. suffered from drought last year and the current weather has made it too wet to plant so far this year. Meanwhile, China has been suffering from animal disease and oversupply in the pork market. But farm woes extend beyond the U.S.-Sino agricultural axis, and they are being accompanied by policy changes that impact the bottom line.Brazil: Low sugar prices and dropping oil prices have led to the government's decision to incentivize more ethanol production. Currently, ethanol production faces a tax of 12 centavos ($0.06) per liter. This tax is applied to a number of sectors and accounts for about 20 percent of total federal revenue; however, it could be reduced to zero as early as next month, and is likely to face overall reform by...