Full TGIF Record # 33770
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Content Type:Abstract or Summary only
Author(s):Martin, S. B.; Mudge, L. C.
Author Affiliation:Department of Plant pathology & Physiology, Clemson University, Florence, SC 29501; Rhone-Poulenc Ag Company, Raleigh, NC.
Title:Influence of spring-applied preemergence herbicides on bermudagrass in nematode-infested soil
Meeting Info.:Dallas, TX: January 17-19, 1994
Source:Southern Weed Science Society Proceedings. Vol. 47, 1994, p. 78-79.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:2
Keywords:TIC Keywords: Nematode control; Cynodon dactylon; Belonolaimus; Preemergence herbicides; Nematicides; Prodiamine; Pendimethalin; Oxadiazon; Dithiopyr; Fenamiphos; Ethoprophos
Abstract/Contents:"It has been observed that thin, non-vigorous bermudagrass (Cynodon spp.) turf has persisted throughout summer months in some locations with nematode infestations and histories of dinitroaniline herbicide use, even after nematicide applications. Nematode infestations are a common problem in many turfgrasses throughout the Southeastern United States. Sting nematode (Belonolaimus longicaudatus) is particularly virulent to turfgrasses, and has the tendency to feed on root tips, inducing short, stubby roots that render the plant more vulnerable to environmental stresses. Sting nematodes begin feeding on bermudagrass roots as the turfgrass breaks dormancy in the spring, before visual greenup. This is also the general time frame when preemergence herbicides are applied for control of crabgrass (Digitaria spp.)and goosegrass (Eleusine indica). The potential for combined detrimental effects of nematode and preemergence herbicide injury to bermudagrass root systems prompted this investigation. A field site was utilized on a golf course fairwaywith a moderately damaging infestation of sting nematode. A split-plot design utilized 5 herbicide treatments as main plots, including prodiamine (1 lb. a.i./acre), pendimethalin (3 lb. a.i./acre), oxadiazon (4 lb. a.i./acre), dithiopyr (0.5 lb. a.i./acre) and no herbicide, and three nematode treatments as subplots, including fenamiphos (10 lb. a.i./acre), ethoprop (20 lb. a.i./acre), and no nematicide. Herbicides were applied with a CO2-charged backpack sprayer at 30 psi, Teejet 8004 tips, and 44 gal of water/acre on March 1, 1993. Nematicides were applied as granular formulations with a drop sreader on April 15. At greenup, (April 30), there were significant herbicide effects for turf quality associated with reduced greenup of pendimethalin-treated plots (P=.0001). There were no significant nematicide or nematicide X herbicide effects. On June 14, there were significant herbicide X nematicide effects (P=.05), ans significant main effects. The interaction was due to increased turf quality of oxadiazon and fenamiphos treated plots. This combine treatmentpersisted in improved quality compared to fenamiphos treatments in turf treated with the other herbicides."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martin, S. B., and L. C. Mudge. 1994. Influence of spring-applied preemergence herbicides on bermudagrass in nematode-infested soil. South. Weed Sci. Soc. Proc. 47:p. 78-79.
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