ABSTRACT - Crop rotation is one of the oldest management strategies in agriculture and has two main purposes:plant nutrition and management of weeds, pests, and diseases, particularly soilborne diseases. Not only is it a long-term strategy for organic agriculture, it is a strong recommendation and a requirement in some countries. One of the consequences of crop rotation in farming systems is the mosaic of crops at farm and landscape levels. With an increasing number of crops in a rotation, the fields on a particular farm usually become smaller.