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Plant Health |
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Golden Nematode Background GN is recognized as a major potato pest in Europe. In England approximately 75 percent of potato production land is now infested resulting in severe crop restrictions. GN was first discovered in the U.S. in 1941, when it was found to be responsible for serious crop damage in a potato field on Long Island NY. Canada, Mexico and the United States all have imposed domestic and foreign quarantine restrictions to prevent artificial spread of the golden nematode from known infested areas to uninfested areas within their borders and prevent introductions from areas known to be infested outside of their borders. GN is controlled by growing resistant potato varieties. Nearly 40 new potato varieties have been developed which are GN resistant. Recently a second race of GN known as Ro2 has been detected. Efforts are underway to increase the number of potato varieties what are resistant to both races, Ro1 and Ro2 which have been found in a few fields thus far. Use of resistant varieties is preferable to chemical nematicides which have several negative aspects.
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