Threshing can be difficult in multiple cropping systems where crops are harvested together. It can take the form of double-cropping, in which a second crop is planted after the first has been harvested. In the Garhwal Himalaya of India, a practice called baranaja involves sowing 12 or more crops on the same plot, including various types of beans, grains, and millets, and harvesting them at different times. Due to this, multiple cropping became more prevalent in Asian countries.