Deere & Company (NYSE:DE) has had a tough year so far, with equipment sales slumping 22% and profits nearly halved during the nine months ended July. Fears of the company ending the year on a somber note has hit its stock, sending it lower by nearly 13% year to date, as of this writing. Being a John Deere investor clearly isn't easy, given how susceptible the farm-equipment business is to the vagaries of the commodities market.

Unfortunately, the worst may not be over yet. The latest figures and updates from the agricultural markets are anything but encouraging. In fact, just three charts sum up Deere's story: It's unpleasant. Take a look at the slideshow below to learn what the charts want to tell you about Deere's future.