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Susan L.F. Meyer

Two strains of the fungus Verticillium lecanii (A. Zimmermann) Viégas were studied as potential biocontrol agents for root-knot nematode (Meloidogyne incognita (Kofoid & White) Chitwood) on cantaloupe (Cucumis melo L.). For the study, pots were filled with soil that had been inoculated with M. incognita (inoculum was applied at two levels: 1000 and 5000 eggs/pot). Each fungus strain was applied individually by pouring an aqueous suspension (made from a wettable granule formulation) into the inoculated soil. Controls received water only. One cantaloupe seedling was then transplanted into each pot. Plants were grown for 55 days in the greenhouse, and then harvested and assessed for root and shoot growth and for nematode egg production. In pots inoculated with 1000 eggs/plant, neither fungus strain affected nematode egg numbers. At the 5000 eggs/plant inoculum level, both strains of the fungus suppressed egg numbers (counts were 28% and 31% less than water controls). Neither strain of V. lecanii affected the number of eggs embedded in root galls; the fungus suppressed nematode population numbers overall solely by affecting the number of eggs located outside of root tissues. Both fungus strains were also autoclaved and then applied to soil, to test for effects of nonviable fungus. In pots inoculated with 5000 eggs, application of one autoclaved strain resulted in a 35% suppression in egg numbers after 55 days, suggesting that the fungus produced a heat-stable substance deleterious to the nematode.

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Rachel E. Rudolph, Carl Sams, Robert Steiner, Stephen H. Thomas, Stephanie Walker and Mark E. Uchanski

,3 dichloropropene (Telone™; Dow AgroSciences, Indianapolis, IN) to suppress yield-detracting weeds and pathogens such as fungi and nematodes ( Collins et al., 2006 ; Martin, 2003 ). Synthetic chemical fumigation is a conventional approach to soilborne pathogen

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Wenjing Pang, John E. Luc, William T. Crow, Kevin E. Kenworthy, Robert McSorley and Robin M. Giblin-Davis

Bermudagrass ( Cynodon spp.) is the predominant turfgrass used in the southern United States and other warm regions in the world. A limitation for the use of bermudagrass in the southeastern United States is the sting nematode ( Belonolaimus

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Cody L. Smith, Joshua H. Freeman, Nancy Kokalis-Burelle and William P. Wechter

Though little published data have been collected, it is commonly accepted that damage caused by soil-borne pathogens, such as FON and plant parasitic nematodes ( Meloidogyne spp.), has increased since the phase-out of methyl bromide. The ban on

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Thomas W. Walters, John N. Pinkerton, Ekaterini Riga, Inga A. Zasada, Michael Particka, Harvey A. Yoshida and Chris Ishida

Plant–parasitic nematodes are major pests of red raspberry, reducing yield and cane growth, and leading to economic losses in many production regions ( Belair, 1991 ; McElroy, 1991 ; Szczygiel and Rebandel, 1988 ; Trudgill, 1986 ). Three plant

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S.M. Schneider, B.D. Hanson, J.S. Gerik, A. Shrestha, T.J. Trout and S. Gao

nematodes” [California Department of Food and Agriculture (CDFA), 2002]. This regulation ensures that plant parasitic nematodes and soilborne pathogens are not spread from infested field nurseries and that establishment and vigor of new fruiting fields is

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Raymond A. Cloyd

Nematodes as Biocontrol Agents. P.S. Grewal, R. Ehlers, and D. I. Shapiro-Ilan (eds.). 2005. CAB International, Nosworthy Way, Wallingford, Oxfordshire OX10 8DE UK. 505 pages with 63 tables and 77 figures. $75.91 (£39.95), softcover, ISBN: 978

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Susan L.F. Meyer, Dilip K. Lakshman, Inga A. Zasada, Bryan T. Vinyard and David J. Chitwood

Root-knot nematodes (RKN; Meloidogyne spp.) are an economically important pathogen on many agricultural plants and are the most commonly reported nematodes on vegetable crops in the United States ( Koenning et al., 1999 ). Because of environmental

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Sally M. Schneider, Husein A. Ajwa, Thomas J. Trout and Suduan Gao

certified nursery use in California must be evaluated and accepted by the appropriate regulatory bodies. If the efficacy of a treatment is accepted, it can be added to CDFA's “Approved Treatment and Handling Procedures to Ensure Against Nematode Pest

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Inga A. Zasada, Thomas W. Walters and John N. Pinkerton

Plant-parasitic nematodes are major pests of red raspberry, reducing yield and cane growth, and leading to economic losses in many production regions ( Bélair, 1991 ; McElroy, 1991 ; Szczygiel and Rebandel, 1988 ; Trudgill, 1986 ). Plant