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| Publication Type:
| Report |
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| Author(s): | Wick, R. L.;
Nissenbaum, T. |
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| Author Affiliation: | Department of Microbiology, Morrill Science Center N203, University of Massachusetts, Amherst, MA 01003 |
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| Title: | Evaluation of Vector MC for managing plant parasitic nematodes in turf, 1995 and 1996 |
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| Section: | Turfgrasses
Other records with the "Turfgrasses" Section
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| Source: | Biological and Cultural Tests for Control of Plant. Vol. 13, 1998, p. 136. |
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| Publishing Information: | St. Paul, MN: The American Phytopathological Society |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Golf courses were selected that had moderate to high populations of plant parasitic nematodes. In both cases, the putting greens were a mixture of annual bluegrass and creeping bentgrass. 1995 trial. Twelve greens at the Veterans' Golf Course in West Springfield, Massachusetts were selected for the study. Mechanical analysis of the soil was not carried out but the top 4 in of soil was sandy due to years of top dressing. Each treatment was replicated with four greens. For each green, three 6 x 6 ft plots were established for repetitive sampling. Treatments consisted of Nemacur, Vector and a water application for the control. Vector MC is a formulation of 12% Steinernema riobravis and 88% inert ingredients (Lesco, Inc., 20005 Lake Rd, P.O. Box 18915, Rocky River, Ohio 44116). For each treatment, the entire green was treated. Nemacur was applied once on 28 Jun at the rate of 8 oz in 2.5 gal water/1,000 ft² followed by approximately 0.5 in irrigation. Vector was applied in the early morning of 7 Jul at the rate of 8 oz in 2.5 gal water/1,000 ft² followed by a light irrigation. Two days following the Vector application, 2 in of rain fell. Ratings of turf quality were carried out on 29 Aug and 9 Oct. Ratings reflected the amount of turf loss as follows: 1=40% (ground showing), 2=30%, 3=20%, 4=10%, and 5=complete cover. For nematode assays, ten subsamples per plot (30 subsamples/green) were collected with a 1 in soil sampling tube to a depth of 4 in, bulked, and extracted. Nematodes were recovered by wet sieving/sugar flotation and identified to genus. The data were subjected to analysis of variance and a test of LSD. 1996 trial. Twelve greens at Wiana Country Club in Osterville MA were selected for the study. The putting greens were built on a native sandy soil. Mechanical analysis of the top 4 in of soil showed it to have 93.7% sand, 4% silt and 2.2% clay. USDA criteria would classify this soil as a coarse sand. Experimental design and treatments were the same as for the 1995 trial. Nemacur was applied 28 June, and Vector was applied the following week. Ratings of turf quality were carried out on 1 Aug. Ratings reflected chlorosis and thinning of the turf, and were based on a scale of 1 to 10. Most healthy turf =10. Results 1995. During 1995, there was a drought and a shortage of irrigation water during the latter part of the season, and significant loss of turf occurred to most of the putting greens. There were no significant differences between treated greens with regard to turf quality for either of the evaluation dates. The Nemacur treatment resulted in a non significant decline in Hoplolaimus but the population was significantly (p=0.1) lower than the Nemacur treatment but not significantly lower than the control. The rise in the Nemacur-treated population was unexpected but nematicidal activity may have diminished due to the 2 in of rainfall in Jul. Neither Vector or Nemacur provided significant reduction in plant parasitic nematodes in 1995. Results 1996. The Tylenchorhynchus population started the season at approximately 800 nematodes/6.2 cu in of soil; however, the population in the untreated plots did not make significant gains until the end of the season. The Nemacur treatment resulted in a reduction in the Tylenchorhynchus population; although, it was only statistically lower than the untreated control on 29 Sep. Tylenchorhynchus has risen in the Vector treatments by 8 Aug and was statistically higher than the Nemacur treatment but not higher than the control. By 9 Sep the Tylenchorhynchus population in the Nemacur-treatments dropped significantly below the Vector and control treatments. Criconemella populations (data not shown) were not significantly reduced with either the Nemacur of Vector treatments. There were no significant differences in quality ratings." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wick, R. L., and T. Nissenbaum. 1998. Evaluation of Vector MC for managing plant parasitic nematodes in turf, 1995 and 1996. Biol. Cult. Tests Control Plant Dis. 13:p. 136. |
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