Beet cyst nematode

Chasnov JR, So WK, Chan CM, Chow KL (2007) The species, sex, and stage specificity of a Caenorhabditis sex pheromone. Proc Natl Acad Sci USA 104 6730-6735 Jonz MG, Riga E, Mercier AJ, Potter JW (2001) Partial isolation of a water soluble pheromone from the sugar beet cyst nematode, Heterodera schachtii, using a novel bioassay. Nematology 3 55-64... 

L6pez-Robles, J., Otto, A.A. and Hague, N.G.M. (1997) Evaluation of entomopathogenic nematodes on the beet cyst nematode Heterodera schachtii. Annals of Applied Biology 128, 100-101. 

In order to prevent the build-up of Rhizomania (Table 6.2), as a condition of the contract sugar beet may not be sown in a field which has grown arty Beta species, e.g. fodder beet, mangels, red beet, in either of the two preceding years. This restriction also helps to prevent the btrild-up of the beet cyst nematode (Table 7.1) and weed beet, although most Brassica crops as host crops can perpetuate the nematode. A three or four year interval is, in fact, preferable between sugar beet and any other closely related crops, as well as Brassicae. 

To reduce the spread of pests such as cyst nematodes, contaminated soil should be returned to the same field after grading and cleaning crops snch as potatoes or sugar beet. Care should be taken when moving machinery from heavily iirfested land to clean land to try and reduce movement of contaminated soil. 

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