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Efficiency of corn gluten meal and hydrolyzed corn gluten meal on weed suppression and cool season establishment

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Title: Efficiency of corn gluten meal and hydrolyzed corn gluten meal on weed suppression and cool season establishment
Author: Hébert, François; Lyons, Eric M.; Jordon, Katerina S.
Abstract: Pesticide restrictions in Ontario, Canada have prompted research into weed control strategies for establishment of turfgrass areas in conjunction with overseeding programs. A greenhouse study and three field studies were conducted to determine if corn gluten meal (GM) or hydrolyzed corn gluten meal (HGM) could be used to reduce weed populations for establishment of Kentucky bluegrass, fine fescue and perennial ryegrass turf, and for overseeding with perennial ryegrass. In all studies the herbicide Bensulide was added as a positive control treatment. In the greenhouse GM was shown to decrease survival of all weed seedlings (white clover, black medic, dandelion, and prostrate knotweed). Prostrate knotweed was the only weed with reduced germination and survival in pots treated with HGM. Kentucky bluegrass and perennial ryegrass establishment were negatively impacted by Bensulide although there was no impact on grass establishment for GM and HGM, except for the 60% lower survival rate of Kentucky bluegrass seeded one week after treatment with GM. In grass establishment field trials the GM and the HGM did not negatively impact the establishment of Kentucky bluegrass, fine fescue, and perennial ryegrass turf. A significant reduction in weed establishment was observed in the fine fescue establishment as long as the seeding occurred between 2 weeks before to 4 weeks after application. However, there were high weed populations in all plots. GM reduced white clover establishment when it was overseeded into an existing turfgrass stand. The results show that while there is limited efficacy of either GM or HGM to reduce weeds during the establishment of turfgrasses, GM may reduce invasion of weeds into existing turfgrass stands.
URI: https://hdl.handle.net/10214/24158
Date: 2013
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Related Publications: Hebert, F., Lyons, E., and Jordan, K. (2013). Efficiency of corn gluten meal and hydrolyzed corn gluten meal on weed suppression and cool season establishment. International Turfgrass Society Research Journal 12: 713-719.


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