Degradation of Benefin and DCPA in Thatch and Soil from a Kentucky Bluegrass (Poa pratensis) Turf

The rates of degradation of 14C-benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine) and 14C-DCPA (dimethyl tetrachloroterephthalate) were significantly faster in thatch than in soil from a Kentucky bluegrass (Poa pratensis L.) turf. These results suggest that herbicides applied preemer...

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Bibliographic Details
Published in:Weed science 1979-03, Vol.27 (2), p.154-157
Main Authors: Hurto, K.A, Turgeon, A.J, Cole, M.A
Format: Article
Language:English
Subjects:
Acid soils
Agricultural soils
chlorthal-dimethyl
Herbicides
Poa pratensis
Sandy loam soils
Silt loam soils
Soil biochemistry
Soil degradation
Soil microorganisms
Soil water
Thatch
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Summary:The rates of degradation of 14C-benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine) and 14C-DCPA (dimethyl tetrachloroterephthalate) were significantly faster in thatch than in soil from a Kentucky bluegrass (Poa pratensis L.) turf. These results suggest that herbicides applied preemergence in turf will persist for shorter periods of time because of the carbon-enriched medium (thatch) and that higher rates or more frequent applications may be required to maintain concentrations at effective levels.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500043721