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Sugar beet disease models In the nineteenth century, farmers had already learned that the yield of sugar beet decreased steadily when beet crops were grown repeatedly in narrow rotations. Schacht showed in 1859 that this damage was caused by beet cyst nematodes, Heterodera schachtii, a parasite which has been a limiting factor in beet production until […]https://metos.global/wp-content/uploads/2022/11/Disease-Models-cover.png