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Emily E. Braun, Sarah Taylor Lovell, Mohammad Babadoost, Frank Forcella, Sharon Clay, Daniel Humburg, and Sam E. Wortman

. ‘Carmen’) production. Specific objectives were to 1) quantify the effects of different grit types on weed suppression, disease severity, soil nitrogen availability and potential crop uptake, and crop yield and 2) determine the compatibility of abrasive

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Levi Fredrikson, Patricia A. Skinkis, and Ed Peachey

605 Bond, W. Grundy, A.C. 2001 Non-chemical weed management in organic farming systems Weed Res. 41 383 406 Brennan, E.B. Smith, R.F. 2005 Winter cover crop growth and weed suppression on the central coast of California Weed Technol. 19 1017 1024 Byrne

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Lisa W. DeVetter, Huan Zhang, Shuresh Ghimire, Sean Watkinson, and Carol A. Miles

day-neutral strawberry grown in an annual system in western Washington. Mulch performance, including deterioration and weed suppression ability, as well as impacts on plant growth, yield, and fruit quality were measured to assess mulch performance and

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Suzanne P. Stone, George E. Boyhan, and W. Carroll Johnson III

, J.D. 2016 Weed suppression in pumpkin by mulches composed of organic municipal waste materials HortScience 51 720 726 Terry, E.R. Stall, W.M. Shilling, D.G. Bewick, T.A. Kostewicz, S.R. 1997 Smooth amaranth interference with watermelon and muskmelon

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Nicole Burkhard, Derek Lynch, David Percival, and Mehdi Sharifi

composts from 1 year to the next. Both composts, MC and SC, were successful at suppressing some dominant perennial weeds (namely sheep sorrel). The major factor that influenced weed suppression by the compost mulches for certain weed species was likely

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Jenny C. Moore and Annette L. Wszelaki

pepper fruit among five different BDMs compared with PE mulch, paper mulch, and bare ground treatments and 2) measure the durability and effectiveness of these mulches for weed suppression over the growing season compared with a hand-weeded bare ground

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Rahmatallah Gheshm and Rebecca Nelson Brown

objective of this study was to determine how using compost as an organic mulch for weed suppression affected yields of romaine lettuce cultivars grown in the late fall and early spring when below-optimal soil temperatures could limit lettuce growth. We chose

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Huan Zhang, Carol Miles, Shuresh Ghimire, Chris Benedict, Inga Zasada, Hang Liu, and Lisa DeVetter

after agricultural weathering, and the impacts of PE mulch and BDMs on soil temperature and moisture, plant growth, yield, fruit quality, and weed suppression in a late summer planting of floricane-fruiting raspberry established as TC transplants. This

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Thomas Björkman

Buckwheat has historically been used to suppress weeds and improve soil condition, but many of the tricks to success have been lost to history. Buckwheat is inexpensive and particularly effective in short windows between crops. We are documenting the techniques of existing experts and complementing that with research. We surveyed northeastern vegetable and strawberry growers to identify what information they need in order to feel confident that they could succeed with a buckwheat cover crop. Top questions include seed availability, types of weeds controlled, relation to other cover crops, volunteer management, and herbicide tolerance. One question tested experimentally was how to establish a full stand with minimum cost. We tested the minimum tillage requirement following pea harvest. No-till resulted in good emergence but slow growth, and dominance by weeds. Disk incorporating the pea residue resulted in excellent growth, which was not further enhanced by chisel plowing before disking. Buckwheat seedlings are intolerant of waterlogging, so deeper tillage may be important in wet years. Sowing buckwheat immediately after tillage resulted in emergence of 35%, leaving gaps large enough for weeds to grow. Waiting 1 week gave an 80% stand and complete weed suppression. Waiting 2 weeks also gave an 80% stand, but weed growth was advanced enough that weed suppression was incomplete. Therefore, a buckwheat cover crop following early vegetables requires light tillage to permit root growth, and up to a week of decomposition. If those provisions are made, complete weed suppression is obtainable.

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Bruce P. Bordelon and Stephen C. Weller

Use of in-row cover crops for weed management in first-year vineyards was investigated in two studies. In the first study, rye (Secale cereal L. 'Wheeler') was fall-planted, overwintered, then managed by three methods before vine planting. Rye was either herbicide-desiccated with glyphosate and left on the surface as a mulch, mowed, or incorporated into the soil (cultivated). Weed density and growth of grapevines (Vitis spp.) were evaluated. Herbicide desiccation was superior to the other methods for weed suppression, with weed densities 3 to 8 times lower than for mowed or cultivated plots. Vine growth was similar among treatments, but the trend was for more shoot growth with lower weed density. In a second study, four cover crops, rye, wheat (Triticum aestivum L. 'Cardinal'), oats (Avena sativa L. 'Ogle'), and hairy vetch (Vicia villosa Roth), were compared. Wheat and rye were fall- and spring-planted, and oats and vetch were spring-planted, then desiccated with herbicides (glyphosate or sethoxydim) after vine planting and compared to weed-free and weedy control plots for weed suppression and grapevine growth. Cover crops provided 27% to 95% reduction in weed biomass compared to weedy control plots. Total vine dry mass was highest in weed-free control plots, was reduced 54% to 77% in the cover crop plots, and was reduced 81% in the weedy control. Fall-planted wheat and rye and spring-planted rye plots produced the highest vine dry mass among cover crop treatments. Spring-planted rye provided the best combination of weed suppression and vine growth. Chemical names used: N-(phosphonomethyl) glycine (glyphosate isopropylamine salt); 2-[l-(ethoxyimino)butyl]5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one (sethoxydim).