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United States Department of Agriculture

Agricultural Research Service

Title: Use of Host Resistance and Soil Treatments to Manage Soil-Borne Fungi and Southern Root-Knot Nematode

Authors
item THIES, JUDY
item Dickson, D - UNIVERSITY OF FLORIDA
item Hassell, R - CLEMSON UNIVERSITY
item ROSSKOPF, ERIN
item Mendes, M - UNIVERSITY OF FLORIDA

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: March 20, 2007
Publication Date: March 30, 2007
Citation: Thies, J.A., Dickson, D.W., Hassell, R., Rosskopf, E.N., Mendes, M. 2007. Use of Host Resistance and Soil Treatments to Manage Soil-Borne Fungi and Southern Root-Knot Nematode. Journal of Nematology. 39:103.

Technical Abstract: Five pepper genotypes and four soil treatments were evaluated in field trials for management of soil-borne fungi and root-knot nematodes in Charleston, SC and Citra, FL. The pepper genotypes, which differed in resistance to Phytophthora capsici and Meloidogyne incognita, included Charleston Belle, a root-knot nematode resistant pepper and its susceptible recurrent parent, Keystone Resistant Giant; CM-334, resistant to both root-knot nematode and Phytophthora capsici; Paladin, a Phythophthora-tolerant bell pepper; and Jupiter, highly susceptible to P. capsici. The soil treatments were pre-plant fumigation with methyl bromide (98:2), BioPhos (drip application), Ridomil Gold (drip application), and an untreated control. All genotypes performed well in the methyl bromide treatment. Overall, plants exhibited less root rot, wilting, and chlorosis in the BioPhos and Ridomil treatments, even though differences in significance were not detected compared to the untreated control. CM-334 exhibited high resistance to root-knot nematodes, high root vigor, and low AUDPC for wilting and chlorosis associated with Pythium root rot. Charleston Belle exhibited high resistance to root-knot nematodes, but was susceptible to Pythium root rot. Paladin, Keystone Resistant Giant, and Jupiter were susceptible to root-knot nematodes and Pythium root rot.

Last Modified: 7/28/2014