Golf Course Management

JUL 2014

Golf Course Management magazine is dedicated to advancing the golf course superintendent profession and helping GCSAA members achieve career success.

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84 GOLF COURSE MANAGEMENT 07.14 A new nematicide for turfgrass A byproduct of sugar processing has shown some effcacy as a nematicide in turfgrass. A few years ago a new turfgrass nematicide, Multiguard Protect EC (furfural, Agriguard) came on the market in the United States. The active ingredient in Multiguard Protect is fur - fural, which is a byproduct of sugar process- ing. Furfural has a number of industrial uses including being an industrial solvent, and in some cases, a food additive. The activity of furfural against nematodes was frst recog - nized a couple of decades ago, but because it has limited solubility in water, its practicality as a nematicide was limited. Illovo Sugar in South Africa is the world's largest producer of high-quality furfural. Their chemists began searching for new uses for furfural and came across the earlier reports of its nematicidal ef - fects. They then developed emulsifable for- mulations of furfural that disperse in water and are well-suited for soil applications. Illovo has now developed several furfural-based ne - maticides, including CropGuard and Protect in South Africa and Multiguard Protect in the United States. University of Florida research Although Multiguard Protect is new to the market, at the University of Florida we have been working with Illovo formulations of fur - fural for more than 10 years. In the labora- tory and greenhouse, we have conducted dose- response and exposure-time experiments with Multiguard Protect to determine the concen - trations and exposure times required to inca- pacitate sting nematode (Belonolaimus longi- caudatus), the most damaging nematode on turfgrasses, and several other turf nematodes William T. Crow, Ph.D. (root-knot [Meloidogyne graminis], ring [Me- socriconema ornatum], and spiral [Helicoty- lenc us pseudorobustus] nematodes). We have conducted numerous feld trials with Multi - guard Protect, evaluating effects on nema- todes and on turf health of different rates, application timings and application methods. Our feld trials have been conducted in a va - riety of environmental conditions, including the University of Florida Plant Research and Education Unit (PSREU) at Citra, Fla., and at golf courses in the area, on multiple warm- season turf cultivars and species, and different kinds of nematodes. This paper will give an overview of Multiguard Protect, summarize our research results and outline how best to use the product based on our current knowl - edge about it. Results and discussion Furfural is a contact nematicide, mean- ing that it affects nematodes in the soil, but not those that are inside plant roots. There - fore, in most cases, Multiguard will be more A Multiguard Protect-treated plot shows turf improvement after three applications. Photo by W.T. Crow 080-089_July14_TechwellCuttingEdge copy.indd 84 6/17/14 2:32 PM

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