Translations:Benutzer:Arian/Klett-Mini-Test/976/en

Crop-Rotation-Related Diseases of Root Crops

The many kinds of root crops in field and garden cultivation each have their own pattern of infestation and damage. They are as a rule incompatible with themselves and must accordingly be placed well apart in the crop rotation. The potato forms a certain exception. Vegetative tuber propagation makes it the most self-compatible of all cultivated plants. In upland situations it can be grown continuously for decades. In warm, moist situations, various virus diseases — transmitted by the peach-potato aphid (Myzodes persicae) and further multiplied through tuber injuries — along with fungal infections such as the dreaded late blight (Phytophtora infestans), and animal pests such as the Colorado beetle (Leptinotarsa decemlineata), set in at the