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Tolerance of new seedings of different grass species to application of NEU1173H and efficacy of NEU1173H for weed control in newly seeded turf - 2011.

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Title: Tolerance of new seedings of different grass species to application of NEU1173H and efficacy of NEU1173H for weed control in newly seeded turf - 2011.
Author: Carey, K; Porter, A.J; Lyons, E.M; Jordan, K.S
Department: Department of Plant Agriculture
Abstract: The objective of this research was to assess the tolerance of new seedings of different grass species to application and efficacy of the herbicide NEU1173H. Plots were located at the Guelph Turfgrass Institute, in a tilled area that had been in mixed turf and white clover cover. The treatments were combinations of different grass species, timings, and rates of postemergent herbicide, as well as controls. The effects of timing of application on grass was quite different between species. Fine fescues did better with a later application, while perennial ryegrass did slightly better with an early application. Timing had less effect on Kentucky bluegrass.The early application was likely phytotoxic to the grasses, while the late application allowed the heavy weed pressure to suppress grass growth. Early application led to better grass development in the perennial ryegrass stand. NEU1173H suppressed weeds in a very heavily infested seedbed situation, but there were important differences, particularly between species and timing treatments. Perennial ryegrass was very competitive against weeds, and even the untreated plots were more than 75% grass by the end of the season. Even at the lowest rate of NEU1173H increased grass to more than 95%, and the ryegrass plots showed only slight differences between rates and timings. Kentucky bluegrass was less competitive, though even the untreated plots were 62% grass by the end of the season. The treatments had a bigger effect on Kentucky bluegrass than on the ryegrass, with the highest rate and best timing increasing the grass to over 85%.
URI: https://hdl.handle.net/10214/26276
Date: 2011
Rights: Attribution 4.0 International
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
Related Publications: Carey, K.; Porter, A. J.; Lyons, E. M.; Jordan, K. S. 2011. Tolerance of new seedings of different grass species to application of NEU1173H and efficacy of NEU1173H for weed control in newly seeded turf - 2011. Guelph Turfgrass Inst. Res. Rep. 25:p. 1-8.


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Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International