A group of Texas farmers and ranchers is touring the Rio Grande Valley. Rio Grande Valley farmers want Mexico to hold up their end of a decades old water treaty. Wheat in the Texas High Plains is moving towards a critical development stage.   The state’s largest farm organization is fighting for farmers and ranchers in Washington D.C. Japan is a big trading partner for U.S. agriculture, but that trading partnership can get a bit complicated. Handling animal health products correctly is very important.