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Proceedings of the International Plant Propagator's Society

Vol. 53

Commercially Available Organic Mulches as a Weed Barrier for Container Production

Jen Llewellyn, Keith Osborne, Christine Steer-George and Jeanine West

pp: 590-592


For many Canadian nurseries, weed control can be a very time-consuming and costly process. Unlike the United States of America, Canada has limited access to effective chemical herbicides (Chong, 2003; Chong et al., 1989; Chong, 2003). Herbicide phytotoxicity and surface water and ground water contamination issues have renewed interest in nonchemical methods such as weed barriers (Mervosh, 1999). Growers are constantly striving to find nonchemical methods of weed control that reduce the frequency of hand weeding in our container nurseries (Calkins, et al. 1996; Chong, 2003; Chong et al., 1989; Mervosh and Abbey. 1999; Mathers, 2003). Over the past decade, mulch has increased in popularity for weed suppression in the landscape industry (Borland, 1990). Organic mulches such as wood chips and bark are attractive and effective methods of weed suppression when applied properly (Mervosh, 1999). Studies have shown that hardwood chips and pine bark mulches are effective weed

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