Dissipation of Turfgrass Foliar Dislodgeable Residues of Chlorpyrifos, DCPA, Diazinon, Isofenphos, and Pendimethalin

Hurto, K. A.; Prinster, Michael

doi:10.1021/bk-1993-0522.ch009

Cited by 9 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reported effects of irrigation on the concentration of dislodgeable residues on foliar surfaces have been variable (Table 4). Whereas immediate post-application irrigation did not affect the concentration of dislodgeable CPY from leaves of turf grass (Hurto and Prinster 1993), significant reductions in concentrations of CPY on grass foliage were found (4-fold difference after 6 h) following post-spray irrigating with water, as recommended by the product label instructions for most turf insect control situations (Goh et al 1986).…”

Section: Tier-2 Characterization Of Exposurementioning

confidence: 84%

Risk to Pollinators from the Use of Chlorpyrifos in the United States

Cutler

Purdy²,

Giesy

et al. 2014

Reviews of Environmental Contamination and Toxicology

View full text Add to dashboard Cite

Section: Tier-2 Characterization Of Exposurementioning

confidence: 84%

Risk to Pollinators from the Use of Chlorpyrifos in the United States

Cutler

Purdy²,

Giesy

et al. 2014

Reviews of Environmental Contamination and Toxicology

View full text Add to dashboard Cite

“…Postapplication irrigation is likely to reduce the amount of dislodgeable residues; however, postapplication irrigation must be consistent with the placement in the targeted area of the turf–soil system. Research reported by Murphy et al (1996b) indicated significantly lower levels of DFR when trichlorfon received postapplication irrigation; however, with chlorpyrifos and diazinon (Hurto and Prinster, 1993), postapplication irrigation showed no significant reduction in the amount of DFR. Postapplication irrigation and rainfall have the potential to transport many pesticides deeper into the turf canopy, where they can bind to thatch and soil (Cooper et al, 1995).…”

Section: Resultsmentioning

confidence: 92%

“…Dislodgeable residues declined to 0.08% on Day 2 and were nondetectable by Day 5. Hurto and Prinster (1993) reported on the dislodgeable foliar residues of chlorpyrifos (O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate), DCPA (dimethyl-2,3,5,6-tetrachlorobenzene-1,4-dicarboxylic acid), diazinon [O,O-diethyl 0-2-isopropyl-6-methyl(pyrimidine-4-yl) phosphorothioate], isofenphos (O-ethyl O-2-isopropoxycarbonylphenyl isopropylphosphoramidothioate), and pendimethalin [N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine] after application to Kentucky bluegrass lawn turf maintained at a height of 7.6 cm in Delaware, OH. Dislodgeable foliar residues as a percentage of the target application rate ranged from a high of 10.7% for isophenfos to a low of 0.6% for chlorpyrifos when determined 2 HAT.…”

Section: Researchmentioning

confidence: 99%

Dissipation of Foliar Bifenthrin Residues after Application to a Tall Fescue Lawn and Implications for Human Exposure

Cooper

Peacock

Shea

et al. 2017

Intl Turfgrass Soc Res J

View full text Add to dashboard Cite

Dislodgeable foliar residues (DFR) can be a primary route for human exposure after pesticide application to turfgrass areas. Consequently, a significant portion of applied pesticide may be available for human exposure via dislodgeable residues. In this study, DFR were determined over a 15‐d period after 6 Oct. 2006 application of the insecticide bifenthrin {2‐methylbiphenyl‐3‐ylmethyl (1RS,3RS)‐3‐[(Z)‐2‐chloro‐3,3,3‐trifluoroprop‐1‐enyl]‐2,2‐dimethylcyclopropanecarboxylate} to a mature stand of ‘Confederate’ tall fescue (Festuca arundinacea Schreb). Foliar residues were determined by wiping treated turfgrass with a distilled‐water‐dampened cheesecloth and analyzing samples using gas chromatography–mass spectrometry. Approximately 35% of the total applied bifenthrin (213,000 ng dm−2) was available to be dislodged over 15 d with 34% DFR loss occurring immediately after application. Residue loss measured 3 and 8 h after treatment contributed an additional 0.5% of the total applied bifenthrin dislodged from the foliar surface. Maximum bifenthrin DFR detected immediately after application resulted in a maximum estimated hazard quotient of 1.1 × 103 for the 15‐d study, indicating possible human toxicological implications. Residue levels detected 2, 5, 7, 11 and 15 d after application measured <1% of total applied bifenthrin, indicating minimal human health risk when applied at the labeled rate.

show abstract

“…As with any pesticide environmental fate process, dislodge from treated turfgrass can vary between compounds. Hurto and Prinster (1993) reported on the DFR of chlorpyrifos, diazinon, and isofenphos applied to a Kentucky bluegrass lawn turf maintained at a height of 7.6 cm in Delaware, OH. Dislodgeable foliar residues as a percentage of the target application rate ranged from a high of 10.7% for isofenphos to a low of 0.6% for chlorpyrifos 2 h after treatment (HAT).…”

mentioning

confidence: 99%

Dissipation of Foliar Carfentrazone Residues after Application to a Tall Fescue Lawn and Implications for Human Exposure

Cooper

Shea

Gannon

et al. 2017

Intl Turfgrass Soc Res J

View full text Add to dashboard Cite

Dislodgeable foliar residues (DFR) are a primary route for human exposure after pesticide application to turfgrass areas. The portion of applied pesticide available for human exposure via dislodgeable residues depends on various factors. In this study, DFR were determined over a 15‐d period after carfentrazone application to an established stand of ‘Confederate’ tall fescue (Festuca arundinacea Schreb). Dislodgeable foliar residues were determined by wiping treated turfgrass with a distilled‐water‐dampened cheesecloth and analyzing samples using gas chromatography–mass spectrometry. Less than 20% of the applied carfentrazone (18,000 ng dm−2) was dislodged, with 13.8% dislodged immediately after application. Dislodgeable foliar residues as determined 1, 4, and 8 h after treatment contributed an additional 5.5% to the applied carfentrazone dislodged from tall fescue foliage. One day after treatment (DAT), carfentrazone dislodgeable residue levels had declined to below 1% of that applied and were nondetectable 3 DAT and after. Carfentrazone residues resulted in a maximum estimated hazard quotient <1 for the duration of the study, indicating that potential human toxicological effects associated with maximum field residue levels are unlikely. This work indicates that carfentrazone poses minimal risk to human health via dermal exposure applied per label recommendations.

show abstract

Dissipation of Turfgrass Foliar Dislodgeable Residues of Chlorpyrifos, DCPA, Diazinon, Isofenphos, and Pendimethalin

Cited by 9 publications

References 0 publications

Risk to Pollinators from the Use of Chlorpyrifos in the United States

Risk to Pollinators from the Use of Chlorpyrifos in the United States

Dissipation of Foliar Bifenthrin Residues after Application to a Tall Fescue Lawn and Implications for Human Exposure

Dissipation of Foliar Carfentrazone Residues after Application to a Tall Fescue Lawn and Implications for Human Exposure

Contact Info

Product

Resources

About