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Effect of Benefin and DCPA on Overseeded Grasses Maintained as Putting Greens

Published online by Cambridge University Press:  12 June 2017

G. E. Coats
Affiliation:
Mississippi Agr. and Forest. Exp. Sta., Mississippi State, MS 39762
C. Y. Ward
Affiliation:
Mississippi Agr. and Forest. Exp. Sta., Mississippi State, MS 39762
E. L. McWhirter
Affiliation:
Mississippi Agr. and Forest. Exp. Sta., Mississippi State, MS 39762

Abstract

Overseeded rough bluegrass (Poa trivialis L. ‘Danish common’) and Italian ryegrass (Lolium multiflorum Lam. ‘Gulf’) maintained under putting green conditions were more susceptible to benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine) and DCPA (dimethyl tetrachloroterephthalate) than creeping bentgrass (Agrostis palustris Hud. ‘Penn-cross’), red fescue (Festuca rubra L. ‘Dawson’), or perennial ryegrass (Lolium perenne L. ‘Medalist II’). February applications of 1.68 or 3.36 kg/ha of benefin and 6.72 or 13.44 kg/ha of DCPA caused significantly more discoloration and reductions in density than equivalent rates applied in March or April. Benefin was more injurious than DCPA to all overseeded species as judged by quality or density. DCPA caused significant delays in the breaking of dormancy of bermudagrass [Cynodon dactylon (L.) Pers. ‘Tifdwarf’].

Type
Research Article
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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