| Abstract/Contents: | "There are no reports of herbicide tolerance on seedling seashore paspalum, and currently only one herbicide is labeled for use on these seedlings. The objective of this study was to determine which herbicides cause the least amount of injury to seashore paspalum seedlings. Field studies were conducted in 2007 to assess the tolerance of seashore paspalum (cv. Sea Spray) to various herbicides. Herbicide treatments included sulfentrazone, carfentrazone, triclopyr, clopyralid, fluroxypyr, carfentazone + 2,4-D + MCPP + dicamba, 2,4-D + MCPP + dicamba, quinclorac, MSMA, imazaquin, metsulfuron, sulfosuluron, halosulfuron, pronamide, siduron, oxadiazon, pendimethalin, dithiopyr, prodiamine, ethofumesate, and fluazifop-P-butyl. Treatments were applied two weeks after emergence of seedlings and compared to an untreated control and a salt water treatment. Turfgrass coverage at two weeks after application was greatest for seashore paspalum treated with clopyralid, halosulfuron, metsulfuron, quinclorac, carfentrazone, salt water, or the untreated check. Greatest phytotoxicity and reduction in turfgrass coverage resulted from application of fluazifop-P-butyl, MSMA, imazaquin, ethofumesate, 2,4-D + MCPP + dicamba, and triclopyr." |
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