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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Fagerness, M. J. |
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| Author Affiliation: | Department of Horticulture, Forestry, and Recreation Resources, Kansas State University, Manhattan, Kansas |
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| Title: | Split season application timings for preemergence control of summer annual grasses |
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| Section: | Weed management in turf, pasture, and rangeland
Other records with the "Weed management in turf, pasture, and rangeland" Section
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| Meeting Info.: | 55th Annual Meeting, Atlanta, GA: January 28-30, 2002 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 55, 2002, p. 58-59. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Abstract/Contents: | "Preemergence (PRE) herbicides have been the recognized standard for control of summer annual grasses in turf. However, recent concerns over summer breakdown of PRE herbicides has fostered new debate over how to optimize summer annual grass control in the transition zone. One option to achieve this goal may involve splitting application timings of PRE herbicides to extend their control period further into summer. Two application timing studies were therefore conducted to address this issue, one targeting large crabgrass (Digitaria sanguinalis) and the other goosegrass (Eleusine indica). The study targeting large crabgrass was conducted at the John Pair Horticultural Research Center in Wichita, KS while the goosegrass study was conducted at Manhattan Country Club in Manhattan, KS. Both studies featured three PRE herbicides, prodiamine, dithiopyr, and pendimethalin, applied at 0.73, 0.56, and 3.36 total kg a.i./ha, respectively. Applications timings for each study were early December only, late March only, and early December followed by late May/early June. The latter timing regime included splitting the applied a.i. equally between the two application dates. Results showed that control of both weed species was better with prodiamine or dithiopyr than with pendimethalin. Split application timings enhanced control of large crabgrass with either dithiopyr or pendimethalin but not with prodiamine. The split application timing regime only improved goosegrass control with pendimethalin. Evidence of summer PRE herbicide breakdown for either weed species was only discernible with pendimethalin treatments. The author concludes that split application timings may offer significant improvements in summer annual grass control, especially when using pendimethalin. However, the increased costs associated with using either prodiamine or dithiopyr instead of pendimethalin may be justified, considering both the improved weed control these PRE herbicides offer and the costs associated with using a suitable postemergence herbicide to supplement weed control in pendimethalin treated turf." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fagerness, M. J. 2002. Split season application timings for preemergence control of summer annual grasses. South. Weed Sci. Soc. Proc. 55:p. 58-59. |
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MSU catalog number: SB 611 .S6 v.54 |
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