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Influence of Nitrogen on the Response of ‘Tifway’ Bermudagrass (Cynodon dactylon) to Flurprimidol

Published online by Cambridge University Press:  12 June 2017

Billy J. Johnson
Billy J. Johnson*
Affiliation:
Univ. Ga., Ga. Stn., Griffin, GA 30223-1797
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Abstract

Vegetative growth of ‘Tifway’ African bermudagrass (Cynodon transvaalensis Burtt-Davy # CYNTR) x bermudagrass [C. dactylon (L.) Pers. # CYNDA] treated with flurprimidol {α-(1-methylethyl)-α-[4-trifluoromethoxy)phenyl]-5-pyrimidinemethanol} at 0.2 kg/ha and repeated at 3-week intervals for a total rate of 0.8 kg/ha was suppressed for 6 weeks compared to growth of nontreated grass. A single application of flurprimidol at 0.8 kg/ha in late May suppressed growth for 4 weeks. When the single 0.8 kg/ha application was delayed until mid-July, bermudagrass growth was suppressed for only 2 weeks. Applications of nitrogen (N) at 25 and 50 kg/ha did not influence flurprimidol's suppression of bermudagrass growth. Turf quality in some instances was lower when treated with 50 kg N/ha or the turfgrass required a longer recovery period than when treated with 25 kg N/ha following flurprimidol treatment. Although single or multiple applications of flurprimidol, each totaling 0.8 kg/ha, injured bermudagrass in some instances, the injury was not severe and the turfgrass fully recovered.

Keywords

Grass retardationgrass suppressiongrowth regulatorturf growthturf qualityCYNDACYNTR
Type
Research
Information
Weed Technology , Volume 2 , Issue 1 , January 1988 , pp. 53 - 58
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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