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Jeffrey R. Pieper, Rebecca Nelson Brown and José A. Amador

averaged only 1.7 Mg·ha −1 in 2011 and 2.1 Mg·ha −1 in 2012. Teasdale and Mohler (2000) showed an exponential relationship between rye mulch biomass and weed populations, concluding that weed suppression is increased by 15% for every 1000 kg of cover

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Katie J. Kammler, S. Alan Walters and Bryan G. Young

.C. Vermeylen, F.M. 2004 Reduced tillage, rye residues, and herbicides influence weed suppression and yield of pumpkins Weed Technol. 18 953 961 Senseman, S.A. 2007 Herbicide handbook 9th ed Weed Science Society of

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Rick A. Boydston, Harold P. Collins and Steven F. Vaughn

species at rates of 300 to 1000 g·m 2 ( Bingaman and Christians, 1995 ). Although weed suppression is often limited with corn gluten meal application rates below 300 g·m −2 , stands of several direct seeded vegetables were reduced with rates as low as 100

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Danielle D. Treadwell, Nancy G. Creamer, Greg D. Hoyt and Jonathan R. Schultheis

the goal of selecting a winter cover for weed suppression may lead to a different species than one for nutrient supply or erosion control, growers should identify primary objectives before selecting a cover crop. In this experiment, winter cover crop

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Makhan S. Bhullar, Simerjeet Kaur, Tarundeep Kaur and Amit J. Jhala

planting increased tuber yield ( Kar and Kumar, 2007 ), with low amounts (2.5–5 t·ha −1 ) of straw mulch not showing any effect on weed suppression and potato yield ( Doring et al., 2005 ). Mulches reduce water evaporation from the soil and help maintain a

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Christian A. Wyenandt, Joseph R. Heckman and Nancy L. Maxwell

:// > Rutledge, A.D. 1999 Experiences with conservation tillage vegetables in Tennessee HortTechnology 9 3 366 372 Schonbeck, M.W. 1998 Weed suppression and labor costs associated with organic, plastic, and paper mulches in small-scale vegetable production J

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Mary Jo Kelly, Marvin P. Pritts and Robin R. Bellinder

effective at controlling in-row weed growth, and each reduced hand-weeding time significantly compared with the chemical control. More aggressive cultivation (6 km·h −1 , 2–4 cm depth) resulted in greater weed suppression than less aggressive cultivation (3

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Neil C. Bell

include C. thyrsiflorus var. griseus ‘Kurt Zadnik’ and ‘Wheeler Canyon’. They are all very wide-spreading and likely of sufficient height and density to suppress most weeds. The lower-growing groundcovers in the trial performed inconsistently. Weed

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Gerald M. Henry, Jared A. Hoyle, Leslie L. Beck, Tyler Cooper, Thayne Montague and Cynthia McKenney

and/or volatilization when irrigation/rainfall is limited. Literature Cited Abouziena, H.F. Hafez, O.M. El-Metwally, I.M. Sharma, S.D. Singh, M. 2008 Comparison of weed suppression and mandarin fruit yield and quality obtained with organic mulches

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Kent D. Kobayashi, Theodore J.K. Radovich and Brooke E. Moreno

HortTechnology 16 436 438 Khahn, T.D. Chung, I.M. Tawat, S. Xuan, T.D. 2006 Weed suppression by Passiflora edulis and its potential allelochemicals European Weed Res. Soc. 46 296 303 Kobayashi, K. Perez, K. 2009 Enhanced active learning and TA involvement in a