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United States Department of Agriculture

Agricultural Research Service

Title: Effects of Multiguard Protect on Root-Knot Nematode Populations and Disease of Tomato and Pepper

Author
item BURELLE, NANCY

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: April 1, 2006
Publication Date: December 1, 2006
Citation: Burelle, N.K. 2006. Effects of multiguard protect on root-knot nematode populations and disease of tomato and pepper. Journal of Nematology. 38(4).

Interpretive Summary: A commercial product, Multiguard™ Protect, was tested in greenhouse trials for its ability to control root-knot nematodes (Meloidogyne spp.) on tomato and pepper. Multiguard is a formulation of furfural, a compound derived from sugarcane waste, which has been reported to have both nematicidal and antifungal properties. Field soil naturally infested with several species of root-knot nematodes was used in greenhouse trials to test recommended rates of Multiguard for preplant soil application, and post-plant drip application. Tomato and pepper plants were evaluated for evidence that the product would be phytotoxic at the high preplant, and lower post-plant rates tested, and for disease caused by both soilborne fungi and root-knot nematodes. No phytotoxicity or root disease, other than galling, was observed on either crop with any treatment. Multiguard significantly increased root-knot and other parasitic nematode populations in both roots and soil at 452 kg/ha in tomatoes and peppers in the fall trials compared to the untreated controls and lower rates Multiguard. However, galling was still significantly reduced on tomato at the 452 kg/ha rate in both trials. Galling on pepper was significantly lower than tomato and was not reduced by Multiguard treatments in either experiment. At high rates, Multiguard appears to have an effect on either the host plant or the nematode that inhibits gall formation in tomato based on the evidence that galling was reduced in the presence of high nematode populations in both soil and roots.

Technical Abstract: The effects of Multiguard™ Protect, a commercial formulation of furfural, on plant growth, nematode populations in roots and soil, and galling caused by Meloidogyne spp. were assessed in two greenhouse trials. ‘Tiny Tim’ tomato (Lycopersinon esculentum) and ‘Capistrano’ bell pepper (Capsicum annuum) were transplanted into pots containing field soil naturally infested with a mixed population of root-knot nematodes, as well as other pathogenic and microbivorous nematodes, and soil microorganisms. Multiguard treatments were applied as soil drenches at: 1) 452 kg/ha 7 days preplant; 2) 452 kg/ha 7 days preplant + 28 kg/ha 2 weeks post-plant; 3) 85 kg/ha 7 days preplant; 4) 85 kg/ha 7 days preplant + 28 kg/ha 2 weeks post-plant; 5) 28 kg/ha 2 weeks post-plant; 6) untreated control. The experiments were performed twice, once in fall 2005 and repeated winter 2006. No phytotoxicity or root disease, other than galling, was observed on either crop with any treatment. Multiguard significantly increased root-knot and other parasitic nematode populations in both roots and soil at 452 kg/ha in tomatoes and peppers in the fall trials compared to the untreated controls and lower rates Multiguard. However, galling was still significantly reduced on tomato at the 452 kg/ha rate in both trials. Galling on pepper was significantly lower than tomato and was not reduced by Multiguard treatments in either experiment. At high rates, Multiguard appears to have an effect on either the host plant or the nematode that inhibits gall formation in tomato.

Last Modified: 9/29/2014
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