Montana—It was unusual to see how much crop was still in the fields in Nebraska, Colorado and beyond as we traveled to north. The late maturity and rains didn’t continue into Montana this season.

A cover crop, like alfalfa, can suppress weed growth because if sown thickly enough, it will grow to cover the surface of the soil. This means that the ground is shaded from the sun, and the weed ...

If this image looks oddly familiar, it's because its a series of crop fields seen from the air—just as a wonderful, colorful radar composite image. The ...