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Tolerance of Putting Green Turfgrasses to Simazine in Irrigation Water

Published online by Cambridge University Press:  12 June 2017

Tim R. Murphy  and
B. Jack Johnson
Tim R. Murphy
Affiliation:
Dep. Agron., Univ. Georgia, Georgia Station, Griffin, GA 30223-1797
B. Jack Johnson
Affiliation:
Dep. Agron., Univ. Georgia, Georgia Station, Griffin, GA 30223-1797
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Abstract

Field experiments were conducted in 1989 and 1990 to evaluate the tolerance of ‘Penncross' creeping bentgrass and ‘Tifway’ bermudagrass fall-overseeded with perennial ryegrass to irrigation water containing simazine. Creeping bentgrass was more sensitive to simazine than the bermudagrass/ryegrass mixture. The predicted critical simazine concentration necessary to reduce creeping bentgrass quality ≤ 60% was 0.22 mg L–1 which corresponded to a cumulative simazine rate of 98 g ha–1. For bermudagrass/ryegrass, the predicted critical simazine concentration and cumulative simazine rate that reduced quality ≤ 60% was 0.68 mg L–1 and 306 g ha–1, respectively.

Keywords

Simazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diaminecreeping bentgrass Agrostis palustris Huds. ‘Penncross’bermudagrass Cynodon transvaalensis Burtt-Davey ♯ CYNTR X C. dactylon (L.) Pers. ♯ CYNDA ‘Tifway’perennial ryegrass, Lolium perenne L. ♯ LOLPETurfgrass qualityturfgrass densitytriazineCYNDACYNTRLOLPE
Type
Research
Information
Weed Technology , Volume 6 , Issue 2 , June 1992 , pp. 328 - 332
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

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