Degradation of diflubenzuron, ivermectin, cyromazine and temephos in soil following surface disposal of sheep dipping and jetting solutions
G. W. LevotElizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Private Bag 4008, Narellan, NSW 2567, Australia. Email: garry.levot@industry.nsw.gov.au
Animal Production Science 51(11) 996-1001 https://doi.org/10.1071/AN11052
Submitted: 21 April 2011 Accepted: 13 August 2011 Published: 21 October 2011
Abstract
Dissipation of diflubenzuron, ivermectin and cyromazine residues in soil was measured following the disposal of 250-L batches of dipping or jetting solutions by spraying onto 64-m2 pasture plots. Half-lives for the three insecticides in soil were estimated to be 80, 39 and 17 days, respectively. Temephos residues in soil were monitored for 224 days after disposal of 4800 L of dip solution (365 mg/L) onto a 450-m2 bunded plot. A half-life in soil of 62 days was estimated. This is significantly longer than that for diazinon, which it has largely replaced as the most commonly applied sheep dip insecticide. In consideration of the volume of dip solutions likely to be discharged on-farm and the half-lives of these commonly used insecticides the following recommendations should apply: permanent exclusion of grazing stock from land treated with diflubenzuron, and temporary exclusion of grazing stock for 3–6 months from land treated with cyromazine or temephos. No additional precautions over those already listed on ivermectin jetting product labels are considered to be warranted by these data.
Additional keywords: remediation, sheep dips.
References
APVMA (2007) APVMA suspends the use of diazinon for sheep dipping and jetting. Australian Pesticides and Veterinary Medicines Authority (APVMA). Available at http://www.apvma.gov.au/news_media/media_releases/archive/2007/mr2007-04.php [Verified 28 September 2011]APVMA (2009) Occupational health and safety assessment for the review of temephos in the product Coopers Assassin sheep dip. Available at http://www.apvma.gov.au/products/review/completed/temephos.php [Verified 28 September 2011]
Armstrong A, Phillips K (1999) Controlling environmental damage from sheep dip chemicals. In ‘Human and environmental exposure to xenobiotics. Proceedings of the XI Symposium of Pesticide Chemistry’. (Eds Del Re AAM, C Brown, E Capri, G Errera, SP Evans, M Trevisan) pp. 655–663. (La Goliardica Pavese: Cromona, Italy)
Chapman RA, Tu CM, Harris CR, Harris C (1985) Persistence of diflubenzuron and BAY SIR 8514 in natural and sterile sandy loam and organic soils. Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes 20, 489–497.
| Persistence of diflubenzuron and BAY SIR 8514 in natural and sterile sandy loam and organic soils.Crossref | GoogleScholarGoogle Scholar |
Cunningham PA, Myers LE (1986) Dynamics of diflubenzuron (Dimilin) concentrations in water and sediment of a supratidal saltmarsh. Environmental Pollution 41, 63–88.
| Dynamics of diflubenzuron (Dimilin) concentrations in water and sediment of a supratidal saltmarsh.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL28XitVahtb0%3D&md5=055a6c58b7ca87d115d3ce30c7163240CAS | [Series A]
Hart RJ, Cavey WA, Ryan WJ, Moore B, Strong MB (1979) Technical details of a new sheep blowfly insecticide. Wool Technology and Sheep Breeding 27, 23–27.
James PJ, Cramp AP, Hook SE (2008) Resistance to insect growth regulator insecticides in populations of sheep lice assessed by a moulting disruption assay. Medical and Veterinary Entomology 22, 326–330.
| Resistance to insect growth regulator insecticides in populations of sheep lice assessed by a moulting disruption assay.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD1M%2FltVyhtQ%3D%3D&md5=a5d80b1e4e3520c64003fc16991ca9d3CAS |
Levot GW (2007) Effective remediation of diazinon from spent sheep dip wash by disposal on land. Australian Journal of Experimental Agriculture 47, 13–16.
| Effective remediation of diazinon from spent sheep dip wash by disposal on land.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXjvFOksw%3D%3D&md5=91c1eb31bb22bc8fd7cad4f42a61ccc1CAS |
Levot G, Sales N (2008) Resistance to benzoylphenyl urea insecticides in Australian populations of the sheep body louse. Medical and Veterinary Entomology 22, 331–334.
| Resistance to benzoylphenyl urea insecticides in Australian populations of the sheep body louse.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD1M%2FltVyhug%3D%3D&md5=cf1116eed0b887a5dede5559c3491d1eCAS |
Levot GW, Lund RD, Black R (2004) Diazinon and diflubenzuron residues in soil following surface disposal of spent sheep dip wash. Australian Journal of Experimental Agriculture 44, 975–982.
| Diazinon and diflubenzuron residues in soil following surface disposal of spent sheep dip wash.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXhtVaisrbM&md5=1b069e9b0dd2f473e1e4766eb42ba868CAS |
Mumma RO, Bogus ER (1981) The effects of 1, 10 and 100 ppm CGA-72662 on soil respiration. Report prepared for Ciba-Geigy Ltd, Basel, Switzerland. (cited in Robinson et al. 1998).
Robinson PW, Reid TC, Joyce NI, Boul HI (1998) Meeting market and consumer requirements in wool production. Wool Technology and Sheep Breeding 46, 172–187.
Selvik A, Hansen PK, Ervik A, Samuelson OB (2002) The stability and persistence of diflubenzuron in marine sediments studied under laboratory conditions and the dispersion to the sediment under a fish farm following medication. The Science of the Total Environment 285, 237–245.
| The stability and persistence of diflubenzuron in marine sediments studied under laboratory conditions and the dispersion to the sediment under a fish farm following medication.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD38XhtVSlu74%3D&md5=686c63cc372dbd6662ccf44f9392d5b5CAS |
Snedecor GW, Cochran WG (1967) ‘Statistical methods.’ 6th edn. (The Iowa State University Press: Ames, IA)
Sundaram KMS (1996) Initial deposits, persistence and degradation kinetics of the insect growth regulator, diflubenzuron, in some terrestrial matrices following simulated aerial application. Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes 31, 135–163.
| Initial deposits, persistence and degradation kinetics of the insect growth regulator, diflubenzuron, in some terrestrial matrices following simulated aerial application.Crossref | GoogleScholarGoogle Scholar |
Sundaram KMS, Nott R (1989) Mobility of diflubenzuron in two types of forest soils. Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes 24, 65–86.
| Mobility of diflubenzuron in two types of forest soils.Crossref | GoogleScholarGoogle Scholar |
VICH (2004) Environmental impact assessment for veterinary medicinal products. Phase II Guidance GL 38 (Ecotoxicity Phase II). Available at http://www.vichsec.org/en/guidelines2.htm [Verified 23 August 2011]
Worthing CR, Walker SB (1987) ‘The pesticide manual – a world compendium.’ 8th edn. (The British Crop Protection Council: Thornton Heath)
