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Book: Proceedings of the Third International Turfgrass Research Conference
Published by: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America

 

This chapter in PROCEEDINGS OF THE THIRD INTERNATIONAL TURFGRASS RESEARCH CONFERENCE

  1.  p. 217-225
     
    Proceedings of the Third International Turfgrass Research Conference

    James B. Beard (ed.)

    ISBN: 978-0-89118-248-1

     

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doi:10.2135/1974.proc3rdintlturfgrass.c25

Differences in Tolerance of Bermudagrass and Zoysiagrass Cultivars to Herbicides1

  1. B. J. Johnson

Abstract

Abstract

Controlling weeds in turfgrasses with herbicides without injuring the desired turf is often a major problem for turfgrass managers. Since repeated annual herbicide treatments are usually required for satisfactory weed control, studies were initiated to determine effects of repeated herbicide treatments on performance of different warmseason turfgrass cultivars. In general, profluralin [N-(cyclopropylmethyl)-α,α,α-trifluoro-2,6-dinitro-N-propyl-p-toluidine] prosulfalin {N-]]4-(dipropylamino)-3,5-dinitrophenyl] sulfonyl]-S, S-dimethylsulfilimine} and napropamide [2-(α-naphthoxy)N, N-diethylpropionamide] at the 3 × rate reduced the stand of bermudagrass (Cynodon spp.) more than DCPA dimethyl tetrachloroterephthalate), butralin [4( 1,1-dimethylethyl)-N-(1-methylpropyl)-2,6-dinitrobenzenamine], or oxadiazon [2-tert- butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-Δ2-1,3,4-oxadiazolin-5-one]. ‘Tifway’ bermudagrass was injured the least, while ‘Tifgreen’ and ‘Tifdwarf’ were injured the most from these treatments. The 3 × treatments of profluralin, butralin, benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine), napropamide, and prosulfalin reduced the stand of ‘Meyer’ and ‘Matrella’ zoysiagrass (Zoysia spp.) more than ‘Emerald’ Zoysiagrass.

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Copyright © 1980. Copyright © 1980 by the American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, and International Turfgrass Society, 5585 Guilford Rd., Madison, WI 53711 USA