Effects of Novel "Lights Out" Mulching and Fertilization Turfgrass Renovation Technique on Arthropod, Weed, and Nematode Communities
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2017-05
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University of Hawaii at Manoa
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“Lights Out” mulching is a pesticide-free method of weed and pest management that can reduce weed pressure when replanting turf, switching grass types, or completing a total renovation of a designated grassy area. In this two-year study, we addressed the feasibility of using black, geotextile weed mats made of woven polypropylene plastic where: 1) the black plastic mulch significantly reduced light from reaching the soil surface for repeated coverings, 2) a fertilization amendment followed by irrigation on de-thatched ground stimulated weed seed germination to effectively flush the weed seed bank, and 3) prolonged periods of covering eliminated old turf and weed presence before re-establishing new turf. This introduction provides a justification for pursuing this management method, provides a comparison to traditional methods of control, and addresses the gaps in knowledge about Lights Out mulching. A comprehensive literature review is also provided to elaborate on what is known about the effects of plastic mulching on arthropod, weed, and nematode communities.
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