| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Dep. of Horticulture, Iowa State Univ., Ames, IA 50011
Dep. of Horticulture, Univ. of Nebraska, Lincoln, NE 68583
Dep. of Agronomy, Univ. of Nebraska, Lincoln, NE 68583
Dep. of Horticulture, Iowa State Univ., Lincoln, Ames, IA 50011
* Corresponding author.
The degradation and vertical movement of pendimethalin, chlorpyrifos, isazofos, and metalaxyl were monitored in Kentucky bluegrass (Poapratensis L.) turf managed as a golf course fairway. Intact turf-soil cores from Mead, NE, on a Sharpsburg soil (fine montmorillonitic, mesic Typic Argiudoll) and Gilbert, IA, on a Nicollet loam (fine-loamy, mixed, mesic Aqnic Hapludoll) planted to Kentucky bluegrass were periodically removed to 60-cm depth through 113 d after pesticide application. Cores were sectioned into verdure, thatch, and multiple soil depths. While verdure contained high pesticide concentrations after application, precipitation, and clipping, and degradation reduced the amount in plant tissue with time. Thatch was highly retentive of the pesticides, generally containing the most residue throughout the monitoring period. Pesticide residues tended to be lower in soil at the Iowa site where more thatch was present. Little chlorpyrifos or pendimethalin moved through the thatch to the underlying soil. Isazofos was more mobile and metalaxyl moved through the entire soil column. Soil contained an average of 58% less pesticide than thatch over all sampling times, and concentrations in soil were highest at the 0- to 5- and 5- to 10-cm depths. Average time for 50% dissipation in the turf-soil profile (DT50) was 16, 12, 10, and 7 d for metalaxyl, pendimethalin, chlorpyrifos, and isazofos, respectively. The pesticides appeared to degrade more rapidly in the turfgrass environment than typically reported for other agronomic cropping systems. Variability in pesticide residue concentrations for each soil depth among the turf-soil cores indicated non-uniform dissipation in the field.
Received for publication December 1, 1994.
This article has been cited by other articles:
|
|
 |
|
  S. Raturi, M. J. Carroll, and R. L. Hill Turfgrass Thatch Effects on Pesticide Leaching: A Laboratory and Modeling Study J. Environ. Qual., January 1, 2003; 32(1): 215 - 223. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. A. Haith, P.-C. Lee, J. M. Clark, G. R. Roy, M. J. Imboden, and R. R. Walden Modeling Pesticide Volatilization from Turf J. Environ. Qual., May 1, 2002; 31(3): 724 - 729. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. Wu, R.L. Green, G. Liu, M.V. Yates, P. Pacheco, J. Gan, and S.R. Yates Partitioning and Persistence of Trichlorfon and Chlorpyrifos in a Creeping Bentgrass Putting Green J. Environ. Qual., May 1, 2002; 31(3): 889 - 895. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. S. Gardner and B. E. Branham Effect of Turfgrass Cover and Irrigation on Soil Mobility and Dissipation of Mefenoxam and Propiconazole J. Environ. Qual., September 1, 2001; 30(5): 1612 - 1618. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.W. Roy, J.C. Hall, G.W. Parkin, C. Wagner-Riddle, and B.S. Clegg Seasonal Leaching and Biodegradation of Dicamba in Turfgrass J. Environ. Qual., July 1, 2001; 30(4): 1360 - 1370. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. A. Haith TurfPQ, A Pesticide Runoff Model for Turf J. Environ. Qual., May 1, 2001; 30(3): 1033 - 1039. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D.S. Gardner, B.E. Branham, and D.W. Lickfeldt Effect of Turfgrass on Soil Mobility and Dissipation of Cyproconazole Crop Sci., September 1, 2000; 40(5): 1333 - 1339. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
