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Smooth Crabgrass (Digitaria ischaemum) Control in Kentucky Bluegrass (Poa pratensis) Turf with Herbicides Applied Preemergence

Published online by Cambridge University Press:  12 June 2017

Prasanta C. Bhowmik*
Affiliation:
Weed Sci. Dep. Plant and Soil Sci., Univ. Massachusetts, Amherst, MA 01003

Abstract

In field experiments, preemergence applications of bensulide {O,O-bis(1-methylethyl)S-[2-[(phenylsulfonyl)amino] ethyl] phosphorodithioate} or DCPA (dimethyl-2,3,5,6-tetrachloro-1,4-benzenedicarboxylate) at 11.2 kg ai/ha controlled smooth crabgrass [Digitaria ischaemum (Schreb. ex Schweig.)Schreb. ex Muhl. #3 DIGIS] selectively in turf. Granular and liquid formulations of bensulide performed similarly. Napropamide [N,N-diethyl-2-(1-naphthalenyloxy)propanamide] granules when applied alone at 1.1 to 3.4 kg ai/ha were partially effective, but when combined with 5.6 kg ai/ha bensulide, controlled smooth crabgrass for the entire season. Oxadiazon {3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2-(3H)-one} controlled crabgrass but temporarily injured the turf. Residual control of crabgrass the year after treatment was unacceptable for all treatments.

Type
Research
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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