Full TGIF Record # 44847
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Author(s):Horst, Garald; Shea, Patrick; Powers, William; Wit, Leonard; Stuefer-Powell, Cindy; Miller, Daniel; Wicklund, Eric
Author Affiliation:Turfgrass Physiologist, Pesticide Residue Specialist, Soil Physicist, JSA Turf Research Facility-ARDC Unit Manager, Agronomy Research Technologist, and Horticulture Technicians, Turfgrass Science Team, University of Nebraska, Institute of Agriculture and Natural Resources
Title:Pesticide and fertilizer fate in turfgrasses managed under golf course conditions in the midwestern region
Section:Pest management
Other records with the "Pest management" Section
Source:Turfgrass Research Report - 1992 [Nebraska]. 1992, p. 61-65.
# of Pages:5
Publishing Information:[Lincoln, NE]: University of Nebraska
Keywords:TIC Keywords: Pesticides; Fertilizers; Fate; Golf courses; Metalaxyl; Isazophos; Pendimethalin; Chlorpyrifos; Pesticide residues; Thatch; Persistence
Abstract/Contents:The research objective is to determine the influence of pesticide, fertilizer, and irrigation management practices on the persistence and mobility of nitrogen and selected pesticides in turfgrass systems. Research sites with established stands of Kentucky bluegrass include the John Seaton Anderson Turfgrass Research Facility at the Agricultural Research and Development Center near Mead, Nebraska. Experimental areas were treated with recommended rates of urea fertilizer, TRIMEC (2,4-D, mecoprop, and dicamba) and pendimethalin herbicides, isazophos and chlorpyrifos insecticides, and the fungicide metalaxyl in 1991 and 1992. The apparent half-life in the sampling zone was the greatest for metalaxyl and pendimethalin (Table 1). Half-life for these two chemicals was 22 days, while that for chlorpyrifos was 17 days, and 15 days for isazophos. The greatest amount in the thatch was chlorpyrifos was 14 days after treatment (Table 2). The greatest residue in the soil after 112 days was metalaxyl (Table 2). All four pesticides appeared to degrade more rapidly in the turfgrass environment than reported for other agronomic crop systems. Metalaxyl and pendimethalin were more persistant than isazophos or chlorpyrifos. Metalaxyl was most mobile; pendimethalin and chlorpyrifos were least mobile. Figures 1,2, and 3 provide the concentrations in turfgrass verdue, thatch, and soil profile at 24 hours and 7 days after application (DAP), 14 hours and 28 DAP, and 56 hours and 112 DAP for methalaxyl, isazophos, pendimethalin, and chlorpyrifos.
Geographic Terms:Midwestern U.S.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Horst, G., P. Shea, W. Powers, L. Wit, C. Stuefer-Powell, D. Miller, et al. 1992. Pesticide and fertilizer fate in turfgrasses managed under golf course conditions in the midwestern region. Turfgrass Res. Rep. Nebr. p. 61-65.
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