What is the largest producer of rye grain in the world?
Rye
Winter rye is any breed of rye planted in the fall to provide ground cover for the winter. It grows during warmer days of the winter when sunlight temporarily warms the plant above freezing, even while there is general snow cover. It can be used to prevent the growth of winter-hardy weeds,[10] and can either be harvested as a bonus crop or tilled directly into the ground in spring to provide more organic matter for the next summer's crop. It is sometimes used in winter gardens and is a common nurse crop.