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| Publication Type:
| Refereed |
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| Author(s): | Baskaran, S.;
Kookana, R. S.;
Naidu, R. |
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| Author Affiliation: | Baskaran: Cooperative Research Centre for Soil and Land Management, Glen Osmond, Australia and Department of Soil Science, The University of Adelaide, Glen Osmond, Australia; and Kookana and Naidu: Cooperative Research Centre for Soil and Land Management, Glen Osmond, Australia and CSIRO Land & Water, Glen Osmond, Australia |
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| Title: | Sorption and movement of some pesticides through turf profiles under Australian conditions |
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| Section: | Environmental issues: Contributed papers
Other records with the "Environmental issues: Contributed papers" Section
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| Meeting Info.: | Sydney, Australia: 1997 |
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| Source: | International Turfgrass Society Research Journal. Vol. 8, No. Part 1, 1997, p. 151-166. |
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| Publishing Information: | Blacksburg, VA: International Turfgrass Society |
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| # of Pages: | 16 |
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| Keywords: | TIC Keywords: Pesticides; Fate; Atrazine; Chlorpyrifos; Diazinon; Dicamba; 2,4-D; Golf greens; Bowling greens; Sorption; Leaching; Root zone; Thatch; Fenamiphos; MCPA
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| Geographic Terms: | Australia |
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| Abstract/Contents: | "Limited information exists on the fate and behaviour of pesticides applied to turf under Australian conditions and consequently their environmental impact is not well understood. Given the rapidly growing community concerns about off-site migration of pesticides from turfs in Australia, we investigated the sorption and movement of five commonly used pesticides (atrazine, chlorpyriphos, diazinon, dicamba and 2,4-D) in reconstructed golf and bowling green profiles. Sorption of pesticides was measured in rooting medium and thatch using the batch equilibrium method. The sorption data obtained in this study was used to assess the leaching potential of pesticides through USGA turf profiles using the screening model available in the literature. To validate model predictions, a column leaching experiments was also conducted to examine the movement of pesticides through a profile constructed according to USGA specification. The same screening model has been subsequently used to simulate the leaching potential of pesticides for Sydney and Brisbane cities. Pesticide sorption as quantified using the distribution coefficient (K^D[d, sorption per unit concentration) followed the order: chlorpyriphos > diazinon > atrazine > 2,4-D > dicamba. Sorption of pesticides was 5-10 times greater in the thatch than in the rooting medium. However, the distribution coefficient expressed on the basis of organic carbon (Kₒ^D[c = K^D[d /organic carbon), varied less between thatch and the rooting medium. Thatch Kₒ^D[c values were lower than rooting medium Kₒ^D[c values for all the pesticides. The screening model used to simulate the movement of pesticides show that dicamba has the greatest potential for leaching and chlopyriphos has the lowest. The leaching potential of pesticides followed the reverse of the sorption order: dicamba > atrazine > 2,4-D > diazinon > chlorpyriphos. The mobility of pesticides observed in the column leaching experiments followed the same pattern as predicted. Subsequent simulation studies highlighted that some pesticides (dicamba, atrazine, fenamiphos, MCPA and 2,4-D) do have the potential to leach through USGA type turf profiles under average rainfall conditions in Sydney and Brisbane." |
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| Language: | English |
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| References: | 26 |
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| See Also: | Other items relating to: 2, 4 - D in Turf |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baskaran, S., R. S. Kookana, and R. Naidu. 1997. Sorption and movement of some pesticides through turf profiles under Australian conditions. Int. Turfgrass Soc. Res. J. 8(Part 1):p. 151-166. |
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