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Crabgrass and Goosegrass Control in a Bentgrass Green in the Transition Zone 1
Author(s) -
Callahan Lloyd M.
Publication year - 1986
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1986.00021962007800040013x
Subject(s) - eleusine indica , digitaria sanguinalis , biology , phytotoxicity , horticulture , agronomy , weed control , weed
A creeping bentgrass ( Agrostis palustris Huds. cv. Penncross) high porosity green was treated with ethofumesate (2‐ethoxy‐2,3‐dihydro‐3,3‐dimethyl‐5‐benzofuranyl methanesulfonate), metribuzin [4‐amino‐6‐(1,1‐dimethylethyl)‐3‐(methylthio)‐1,2,4,‐triazin‐5(4 H )‐one], NC ‐20484 (structure undisclosed, belongs to benzofuran group), napropamide [ N , N ‐diethyl‐2‐(l‐naphthalenyloxy)propanamide], oxadiazon {3‐[2,4‐dichloro‐5‐(1‐methylethoxy)phenyl]‐5‐(1,1‐dimethylethyl)‐1,3,4‐oxadiazol‐2‐(3 H )‐one}, and prosulfalin ( N ‐[4‐(dipropylamino)‐3,5‐dinitrophenyl]sulfonyl}‐ S , S ‐dimethylsulfilimine) to determine phytotoxicity and effectiveness in controlling large crabgrass ( Digitaria sanguinalis L. Scop.) and goosegrass [ Eleusine indica (L.) Gaertn.]. No sod loss occurred with a 1‐yr treatment of prosulfalin at 3.4 and 6.7 kg ha− 1 or ethofumesate at 1.1 kg ha− 1 . Repeat treatments for 3 more years at reduced rates resulted in no sod loss with ethofumesate or NC ‐20484 at 0.6 and 1.1 kg ha− 1 , oxadiazon at 2.2 and 4.5 kg ha− 1 , and prosulfalin at 1.7 and 3.4 kg ha− 1 . Single and sequential treatments of oxadiazon and prosulfalin, at both rates for each, gave 96 to 100% control of crabgrass. Only oxadiazon at 4.5 kg ha− 1 and prosulfalin at 3.4 kg ha− 1 gave 91 to 100% control of goosegrass. There was no evidence of herbicide residue buildup from treatments to the same plots during four successive years in the high porosity green (95.3% sand, 3% silt, 1% clay, 0.7% OM by weight).