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Smutgrass (Sporobolus Indicus) Control in Bermudagrass (Cynodon dactylon) Turf with Triazine-MSMA Applications

Published online by Cambridge University Press:  12 June 2017

Roy K. Nishimoto  and
Charles L. Murdoch
Roy K. Nishimoto
Affiliation:
Univ. Hawaii, Honolulu, HI 96822
Charles L. Murdoch
Affiliation:
Univ. Hawaii, Honolulu, HI 96822
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Abstract

Two or three applications of MSMA applied alone were ineffective in controlling smutgrass in common bermudagrass turf. Where atrazine at 2.2 kg ai/ha or simazine at 2.2 kg/ha was followed by two or three MSMA applications at 2.2 or 4.5 kg/ha, smutgrass control was increased. Metribuzin followed by two or three applications of MSMA was only slightly better than MSMA applied alone. Up to 35% injury to bermudagrass was observed 2 wk after the initial MSMA or the MSMA-triazine treatment, but complete recovery was evident 2 to 4 wk later, even with one or two follow-up MSMA applications at weekly intervals. Bermudagrass injury from the application of triazines followed with MSMA did not differ from MSMA applied alone in two of three experiments. In one experiment, atrazine or metribuzin followed with MSMA applications caused 10 to 25% more bermudagrass injury than MSMA applied alone.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diaminemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneMSMA, monosodium salt of methylarsonic acidsimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diaminebermudagrass, Cynodon dactylon L.) Pers. ♯ CYNDAsmutgrass, Sporobolus indicus (L.) R. Br. ♯ SPZINAtrazinemetribuzinsimazineCYNDASPZIN
Type
Research
Information
Weed Technology , Volume 8 , Issue 4 , December 1994 , pp. 836 - 839
Copyright
Copyright © 1994 Weed Science Society of America 

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References

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