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United States Department of Agriculture

Agricultural Research Service

Title: Biological Control of Fusarium Wilt of Muskmelon Using Nonpathogenic Fusarium Spp. and Other Biological Agents, 1997-1998

Authors
item Bao, Jian - AG CANADA
item Hill, J. - AG CANADA
item Lazarovits, George - AG CANADA
item Fravel, Deborah
item Howell, Charles

Submitted to: Biological and Cultural Tests for Control of Plant Diseases
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: January 28, 1999
Publication Date: N/A

Interpretive Summary: Field plots were established to evaluate the efficacy of selected biocontrol agents for the management of Fusarium wilt of muskmelon. The field was naturally infested with the wilt pathogen F. oxysporum f. sp. melonis. Isolates of nonpathogenic F. oxysporum (CS-20, SA70, Fs-7 and Fo-7), F. solani (CS-1), Gliocladium (Trichoderma) virens (G-37, G-4, G6, G10 and Gl-3), an unidentified bacterium M3, Burkholderia vietnamiensis (Bc-F), and Streptomyces spp. (B-B1-4-1). Biocontrol agents were added at seeding and prior to transplanting. In 1997, no treatments were different from the nontreated control for yield, disease severity or disease incidence. In 1998, there were no treatment effects on disease severity or yield. There were no differences in disease incidence, except for disease evaluated 7 weeks after transplantation when disease incidence was significantly lower for plants treated with B-B1-4-1 than in the nontreated control. There was a high level of variability with all parameters tested in both years. This information will be used by scientists developing environmentally benign control measures for use against Fusarium wilt.

Technical Abstract: Field plots were established to evaluate the efficacy of selected biocontrol agents for the management of Fusarium wilt of muskmelon. The field was naturally infested with the wilt pathogen F. oxysporum f. sp. melonis. Isolates of nonpathogenic F. oxysporum (CS-20, SA70, Fs-7 and Fo-7), F. solani (CS-1), Gliocladium (Trichoderma) virens (G-37, G-4, G6, G10 and Gl-3), an unidentified bacterium M3, Burkholderia vietnamiensis (Bc-F), and Streptomyces spp. (B-B1-4-1). Biocontrol agents were added at seeding and prior to transplanting. In 1997, no treatments were different from the nontreated control for yield, disease severity or disease incidence. In 1998, there were no treatment effects on disease severity or yield. There were no differences in disease incidence, except for disease evaluated 7 weeks after transplantation when disease incidence was significantly lower for plants treated with B-B1-4-1 than in the nontreated control. There was a high level of variability with all parameters tested in both years.

Last Modified: 8/22/2014