1997
DOI: 10.1111/j.1751-0813.1997.tb14382.x
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Organophosphorus residues in wool grease resulting from specified on‐farm lice and flystrike control treatments

Abstract: We recommend that plunge or shower dipping should not be used more than 7 weeks after shearing, nor at higher concentration than the standard dose rate used for lice control, whereas jetting may be satisfactory for up to 7 months after shearing, provided only one application is administered.

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Cited by 5 publications
(10 citation statements)
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“…In surveys of both Tasmanian wool and the national wool clip, increased frequency of pesticide use and a reduction in the interval between use and shearing were associated with a large amount of residues. [4][5][6] These field observations support findings from experimental studies of late season use of OPs and SPs and residues. 13 However, in the current study use of pesticides for blowfly control and wool residues were not associated, in contrast to previous studies.…”
Section: Discussionsupporting
confidence: 56%
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“…In surveys of both Tasmanian wool and the national wool clip, increased frequency of pesticide use and a reduction in the interval between use and shearing were associated with a large amount of residues. [4][5][6] These field observations support findings from experimental studies of late season use of OPs and SPs and residues. 13 However, in the current study use of pesticides for blowfly control and wool residues were not associated, in contrast to previous studies.…”
Section: Discussionsupporting
confidence: 56%
“…13 However, in the current study use of pesticides for blowfly control and wool residues were not associated, in contrast to previous studies. [4][5][6] The reason for lack of association may have been that less OPs were used between 1994 and 1997 to control blowfly strike. The wool growing period covered by the survey was a period of below-average rainfall in most of Queensland's sheep-raising areas.…”
Section: Discussionmentioning
confidence: 99%
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“…An association has been found between OP residues on wool and both the number of treatments applied to sheep for louse infestation and the timing of these treatments. 1,7,8 Reduced use of OPs for louse treatment on a second occasion may therefore partly explain the substantial reduction in residues described in this study. In addition, the use of OPs to control blowfly strike decreased during the period.…”
Section: Discussionmentioning
confidence: 80%
“…9 Similarly, only small amounts of OP residues have been detected in association with handjetting when used on sheep with < 7 months growth of wool. 7 Thus, most of the respondents in this study controlled lice with pesticide application methods which should result in small amounts of pesticides on wool grown. In the case of flystrike control, handjetting and dipping decreased increased during the study period.…”
Section: Discussionmentioning
confidence: 99%