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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88 GOLF COURSE MANAGEMENT 07.14 RESEARCH SAYS • A byproduct of sugar processing, Multiguard Protect, has shown some potential as a nemati - cide in turfgrass, especially for sting nematode. • The soil should be moist when the product is applied, and the product should be watered in after application. • Multiguard does not eliminate nematodes and should be used in combination with other tools in an IPM program. • Turf species and cultivars show varying dif - ferences in sensitivity to Multiguard, so trial tests should be carried out to determine how a particular grass/environment will react to the product. furfural into the soil profle. After watering- in the treatment, do not irrigate again for 24 hours. Make multiple applications at two- to four-week intervals. Although it is helpful, Multiguard Protect is not a silver bullet against nematodes (we do not know of any product that is), and expecta - tions should be realistic. We observe improved turf health while the Multiguard application sequence is ongoing, but usually these are not long-term benefts. Multiguard will suppress nematodes, but it will not make all of them go away. For these reasons, Multiguard will typically work best in rotation or in combina - tion with other nematode management tools in a nematode IPM program and only rarely should be relied on as a sole tactic against nematodes. Multiguard works better against some nematodes than others, and better on some courses than others. We have also ob - served differences in sensitivity among grass species and cultivars. Therefore, before treat - ing large areas, the golf course staff should frst do some trial testing to familiarize them- selves with the product and its effects on their grass and in their environment. Acknowledgments Funding for these studies was provided by Illovo Sugar and Agriguard Co. The author also would like to thank Mark Kann and his staff at the University of Florida Plant Science Research and Education Center in Citra, Fla., and the superintendents and staff of the many cooperating golf courses. Literature cited 1. Crow, W.T., and J.E. Luc. 2014. Field effcacy of fur- fural as a nematicide on turf. Journal of Nematology 46:8-11. 2. Luc, J.E., and W.T. Crow. 2013. Factors affecting fur - fural as a nematicide on turf. Journal of Nematology 45:260-264. William T. Crow, Ph.D. (wtcr@uf.edu), is a professor and landscape nematologist in the entomology and nematology department at the University of Florida, Gainesville, Fla. Multiguard Protect vs. nematodes at two soil depths Figure 4. Effects of three applications of Multiguard Protect at two-week intervals on the number of sting nematodes at depths of 0-2 inches (A) and 2-4 inches (B) of soil profle on bermudagrass golf tees at Palatka and Citra, Fla. Stars indicate application dates. Asterisks (*, **, ***) indicate values that are different from the untreated plots at P ≤ 0.1, 0.05 and 0.01, respectively. 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 No. of sting nematodes/100 cc (cubic centimeters) of soil Palatka untreated Palatka Multiguard Citra untreated Citra Multiguard A B *** ** * 0–2 inch depths 2–4 inch depths Week 0 Week 2 Week 4 Week 6 Week 0 Week 2 Week 4 Week 6 080-089_July14_TechwellCuttingEdge copy.indd 88 6/17/14 2:32 PM

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