Full TGIF Record # 93623
Item 1 of 1
Publication Type:
i
Proceedings
Material Type:Chapter
Author(s):Raturi, S.; Carroll, M. J.; Hill, R. L.
Author Affiliation:University of Maryland
Title:Effect of thatch on pesticide model leaching predictions
Volume Editors:Thain, Eric
Meeting Info.:Proceedings of the 2002 World Scientific Congress of Golf, St. Andrews, Scotland; 22 -26 July, 2002
Monographic Source:Science and Golf IV, 2002, p. 698-712.
Publishing Information:London: Routledge
# of Pages:15
Keywords:TIC Keywords: Models; Water quality; Thatch; Leaching; Pesticides; Carbaryl; Triclopyr; Agrostis; Zoysia
Abstract/Contents:"Process based models are frequently used to assess the impact of turfgrass management practices on the quality of water emanating from proposed to existing golf course sites. This study was conducted to determine the effect of thatch on the transport of two pesticides and to evaluate the use of a volume averaging approach to account for the presence of thatch in model simulations. Pesticide breakthrough curves were obatained from coulmns of soil and thatch+soil by subjecting the columns to a constant flux of 1 cm hr-1 one day after applying triclopyr and carbaryl. Columns containing zoysiagrass thatch had lower triclopyr and carbaryl leaching losses than did columns containing soil only. Pesticides and bromide transport parameters indicated that non-equilibrium processes were affecting the transport of both pesticides. Overall, use of a two site non-equilibrium model correctly predicted the peak concentration and tailing behavior of triclopyr and carbaryl when a volumetric averaging approach was used to account for the presence of thatch. Relatively good agreement between actual and model predicted pesticide leaching losses indicated that volume averaging thatch and soil retardation factors can be used to satisfactorialy predict the transport of pesticides applied to soils that contain a surface layer of thatch."
ISBN:0-415-28302-7
Language:English
References:19
See Also:For more information about the book this record is from, or to see other records from this work: R=239768
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Raturi, S., M. J. Carroll, and R. L. Hill. 2002. Effect of thatch on pesticide model leaching predictions. In Thain, Eric (ed.) Science and Golf IV. London: Routledge.
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