Diseases and pests of sugarbeet Volume 1, Diseases and pests of sugarbeet : multilingual DVD / Department of Plant Pathology, Christian-Albrechts University, Kiel. Prof. Dr. Joseph-Alexander Verreet, Dr. Holger Klink (eds.)

1.1 Cercospora beticola & Ramularia beticola (9:15 min): The most important pathogens causing leaf diseases of sugarbeet are Cercospora beticola and Ramularia beticola. The disease cycles of these pathogenic fungi are illustrated in photo-like 3D animations and real-image video sequences. Particularly, the mode of infection as well as pathogen spread are exhaustively shown. The use of epidemiological threshold values as a decision-making aid for the selective application of fungicides is explained. By growing varieties of sugarbeet that are less susceptible to Cercospora and Ramularia beticola the course of infection can be delayed. 1.2 The Beet Cyst Nematode Heterodera schachtii (12:30 min) : The pest that poses the greatest threat to sugarbeet yield, particularly in warm and sufficiently moist soils, is the beet cyst nematode, Heterodera schachtii. The movie depicts the complete life cycle of this pathogen - from the hatching of juveniles, infection of sugarbeet roots, induction of feeding cell systems (syncytia) to the development of adult males and females, followed by fertilization and cyst formation. Since chemical controls (nematicides) are frequently uneconomical or unavailable, the movie also explains cultural means of control, like long rotations with non-host crops and growing of trap crops, most notably nematode-resistant cultivars of mustard and radish. Finally, new high-yielding nematode-resistant sugarbeet cultivars are shown, offering novel nematode management tools to the farmer