The tracks left by a tractor can clearly be seen in a green field of winter wheat growing to the southwest of Braunston-in-Rutland, in Rutland, UK. A patchwork of green fields can be seen on the hill behind.
From Wikipedia (http://en.wikipedia.org/wiki/Winter_wheat):
Winter wheat is a type of cereal that is planted from September to December in the Northern Hemisphere. Winter wheat sprouts before freezing occurs, then becomes dormant until the soil warms in the spring. Winter wheat needs a few weeks of cold before being able to flower, however persistent snow cover might be disadvantageous. It is ready to be harvested by early July.
Hard winter wheats have a higher gluten protein content than other wheats. They are used to make flour for yeast breads, or are blended with soft spring wheats to make the all-purpose flour used in a wide variety of baked products. Soft wheat is used for specialty or cake flour. Durum, the hardest wheat, is primarily used for making pasta. Almost all durum wheat grown in North America is spring-planted.
Winter wheat is grown throughout Europe, North America, and in northern Asia.
-0.53 exposure compensation applied in CNX2
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Color Control Point used in CNX2 to brighten and add contrast to field
Color Control Points used in CNX2 to darken and add contrast to clouds
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