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Nematodes as a Limiting Factor in Potato Production in Scandinavia

Holgado, Ricardo; Magnusson, Christer
Journal article, Peer reviewed
Accepted version
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2012_10.1007.s11540-012-9209-6_av.pdf (389.8Kb)
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http://hdl.handle.net/11250/2469542
Utgivelsesdato
2012-03-22
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Originalversjon
Potato Research. 2012, 55 (3-4), 269-278.   10.1007/s11540-012-9209-6
Sammendrag
Plant parasitic nematodes associated with potato feed on roots and/or tubers. About 70 species, representing 24 genera, have been reported from potato. Since nematodes attack underground plant parts, there are no reliable foliar symptoms to show that nematodes may be the major cause of poor growth and reduced tuber yields. Potato roots damaged by nematodes may show lesions, abnormal proliferation of lateral roots, emerging white females and brown cysts. Nematode attacks may render plants vulnerable to other pathogens, so disease caused by microorganisms may have nematodes as an etiological component. Therefore, nematode damage may often have been attributed to other factors. In Scandinavia, potato cyst nematodes (Globodera rostochiensis and Globodera pallida) are by far the most important nematodes on potato. In Norway, the cost of compensations schemes due to imposed statutory regulations of potato cyst nematodes may some years exceed the compensation for any other pests or diseases organism in agriculture. Other important nematodes include root lesion nematodes (Pratylenchus spp.), stubby root nematodes (Trichodorus spp. and Paratrichodorus spp.), and potato rot and stem nematodes (Ditylenchus spp.). Root knot nematode Meloidogyne hapla is considered less important. Meloidogyne chitwoodi and Meloidogyne fallax are not known to be present in Nordic countries. In the control, crop rotations using non-host crops, alternating susceptible and resistant potato cultivars, are an important control measure. However, the use of resistant potato cultivars requires knowledge of the species and pathotypes present in the field.
Utgiver
Springer Netherlands
Tidsskrift
Potato Research
Opphavsrett
© EAPR 2012

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