Full TGIF Record # 53149
Item 1 of 1
Publication Type:
i
Report
Author(s):Wick, R. L.; Nissenbaum, T.
Author Affiliation:Department of Microbiology, Morrill Science Center N203, University of Massachusetts, Amherst, MA 01003
Title:Evaluation of DiTera drenches for managing root-knot nematodes in turf, 1997
Section:Turfgrasses
Other records with the "Turfgrasses" Section
Source:Biological and Cultural Tests for Control of Plant. Vol. 13, 1998, p. 140.
Publishing Information:St. Paul, MN: The American Phytopathological Society
# of Pages:1
Abstract/Contents:"A putting green in Glen, New Hampshire was chosen for this study because of a high population of root-knot nematode and the absence of other plant parasitic nematodes. The turf was a mixture of annual bluegrass and creeping bentgrass. Mechanical analysis of the top 4 in showed it to be 92% sand, 5.6% silt, and 2.5% clay. USDA criteria classify this soil as a coarse sand based on the sand subfractions. Twenty-five plots, 6 x 6 ft provided five replications for 5 treatments. A single treatment of Nemacur, 2.3 lb/1,000 sq ft, was applied 6 Jun. Three DiTera treatments applied/1,000 ft² on 6 Jun were: 0.58 lb, 1.16 lb, and 0.58 lb which received a second 0.58 lb application on 14 Jul. DiTera is a 95% formulation consisting of dried fermentation solids and solubles of Myrothecium verrucaria (Abbott Laboratories, Long Grove, IL 60047). Five plots served as untreated controls. All plots received approximately 0.5 in irrigation following treatment application. For nematode assays, ten subsamples per plot were collected with a 1 in soil sampling tube to a depth of 3-4 in and bulked. Soil was washed from roots, and 0.07 oz (2 g) fresh weight of roots/plot were shaker-extracted for 3 days in 1.7 oz (50 ml) water. Juveniles and males were counted, and the data were subjected to a one-way analysis of variance and a test of LSD. Plots were evaluated for color and thinning during each collection date. There were no differences in turf color or thinning among the treatments on any of the collection dates. The drop in juvenile nematodes apparent on 30 Jun is consistent with three previous years of monitoring nematodes at this site. Only the Nemacur treatment significantly reduced root-knot juveniles compared to the untreated control. The Nemacur-treated plots had lower numbers of juveniles and males throughout the season but plot to plot variability precluded statistical significance on all but one collection date. The two 0.58 lb applications of DiTera showed a trend in root-knot reduction but differences were not statistically significant."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wick, R. L., and T. Nissenbaum. 1998. Evaluation of DiTera drenches for managing root-knot nematodes in turf, 1997. Biol. Cult. Tests Control Plant Dis. 13:p. 140.
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