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Title: Detection and management of stunt and stubby root nematodes in a southern forest nursery

Author: Cram, Michelle M.; Fraedrich, Stephen W.;

Date: 2007

Source: In: Riley, L.E.; Dumroese, R.K.; Landis, T.D. National Proceedings: Forest and Conservation Nursery Associations - 2006. Proceedings RMRS-P-50. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 91-96

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: Populations of stunt (Tylenchorhynchus claytoni) and stubby-root (Paratrichodorus minor) nematodes, as well as predaceous nematodes (Mylonchulus spp., Mononchus spp.), were monitored in 2005 for 8 months in three loblolly pine fields at a southern forest nursery. The fields were selected based on their 2004 management regimes and consisted of one that was fall fumigated with a combination of 67% methyl bromide and 33% chloropicrin, another that had been in a sorghum cover crop, and a third that had been used for longleaf pine production. In April 2005, the populations of the nematodes were higher in fields that had sorghum or pine than in the fumigated field. By December, the stunt nematodes had increased dramatically in some sections of the fumigated field and the field that had sorghum. Populations of the stubby-root nematode remained under 47/100 cc soil in all fields. The predacious nematode populations did not get above 40/100 cc soil and their effect on the plant-parasitic nematode populations remains undetermined. Host range tests for the stunt and stubby-root nematodes found that the fallow treatment yielded the lowest number of stunt nematodes, followed by a pearl millet (Pennisetum americanum) cover crop.

Keywords: nematode, stunt, stubby-root, Tylenchorhynchus claytoni, Paratrichodorus minor, Pinus taeda, pine, cover crops, host range, sorghum, rye, pearl millet, fallow

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Cram, Michelle M.; Fraedrich, Stephen W. 2007. Detection and management of stunt and stubby root nematodes in a southern forest nursery. In: Riley, L.E.; Dumroese, R.K.; Landis, T.D. National Proceedings: Forest and Conservation Nursery Associations - 2006. Proceedings RMRS-P-50. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 91-96

 


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