Commodities traders are understandably a little jittery, considering China has thrown a giant wrench into their calculations around the world’s biggest market for raw materials. So, when the US Department of Agriculture dropped its latest crop report (pdf), they went to town. Cotton projections came in way short of expectations, which drove up prices, while the opposite happened for soybeans, corn, and wheat, sending those prices down. All that excitement means you get a chart that looks like this. Happy hump day.