Herbicide influence on rate of establishment of warm-season turfgrasses
- B.J. Johnson
The establishment of warm-season turfgrasses is often hindered by weed competition because adequate chemical control practices have not been developed. Experiments were conducted on ‘Tifway’ bermudagrass (Cynodon dactylon (L.) Pers.), centipedegrass (Eremochloa ophiuroides (Munro) Hack.), and St. Augustinegrass (Stenotaphrum secundatum (Walt.) Kuntze) to determine the effects of various herbicide treatments during establishment. Dimethyl tetrachloroterephthalate (DCPA) applied immediately after sprigging Tifway bermudagrass resulted in satisfactory weed control, but sequential treatments of DCPA and monosodium methanearsonate (MSMA) + 2,4-dichlorophenoxyacetic acid (2,4-D) resulted in excellent weed control with a higher percent turf ground cover at the end of the growing season. Single treatments of 2-chloro-4,6-bis-(ethylamino)-s-triazine (simazine) and 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) at 1.12 kg/ha applied immediately following sprigging of centipedegrass and St. Augustinegrass controlled grassy weeds satisfactorily and resulted in an increased rate of turf ground cover compared to the untreated plots. Two applications of 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)benzamide (pronamide) applied to centipedegrass at sprigging and at 3 weeks after sprigging controlled weeds sufficiently for optimum turf ground cover at the end of the first growing season. Additional index words: Turf, Lawn, Turf ground cover, Weed control, Atrazine, Simazine, Pronamide, DCPA, MSMA, 2,4-D.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © 1974. . Copyright 1974 by the American Society of Agronomy, Inc. and the Crop Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA