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Howard F. Harrison, D. Michael Jackson, Anthony P. Keinath, Paul C. Marino and Thomas Pullaro

Fall transplanted `Commander' broccoli (Brassica oleracea Botrytis group) yield in mulches formed from the residues of killed cowpea (Vigna unquiculata), soybean (Glycine max), and velvetbean (Mucuna pruriens) cover crops was compared to yield in conventional production on bare soil. Average aboveground biomass production was 6.9, 7.7, and 5.9 t·ha-1 (3.08, 3.43, and 2.63 tons/acre) and total nitrogen content of the aboveground tissues was 2.9%, 2.8%, and 2.7% of the dry weight for cowpea, soybean, and velvetbean, respectively. Within each cover crop mulch main plot, subplots received different nitrogen rates, [0, 84.1, or 168.1 kg·ha-1 (0, 75, or 150 lb/acre)]. For several nitrogen level × year comparisons, broccoli grown in mulched plots yielded higher than broccoli grown on bare soil plots. Cowpea and soybean mulches promoted broccoli growth more than velvetbean mulch. The mulches of all three species persisted through the growing season and suppressed annual weeds.

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Daniel C. Brainard, John Bakker, D. Corey Noyes and Norm Myers

been recommended (e.g., Kuepper and Thomas, 2001 ) and tried by growers, but few studies have evaluated their impact on asparagus or weeds. In Wisconsin, living mulches grown in unirrigated asparagus provided weed suppression benefits but also

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Cécile Bertin, Andy F. Senesac, Frank S. Rossi, Antonio DiTommaso and Leslie A. Weston

for weed management in turf has shown that most products do not provide selective or cost-effective, long-term weed suppression. Weed removal by mulching, cultivation, flame-burning, and steaming can be used in landscapes, but is cost prohibitive and

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Sam E. Wortman, Ignatius Kadoma and Michael D. Crandall

-long weed suppression ( Martin-Closas et al., 2008 ; Miles et al., 2012 ; Moreno and Moreno, 2008 ; Ngouajio et al., 2008 ; Waterer, 2010 ). Despite the potential shortcomings in season-long durability, fruit and vegetable crop yield is often similar

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Deborah Willard and Harlene Hatterman Valenti

, and weed fresh weight at three evaluation times in 2006 at Prosper, ND. The flax straw mulch mat deteriorated very little so it continued to be as effective as the landscape fabric in weed suppression throughout the 2-year study ( Tables 1 and 2

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Jialin Yu, Nathan S. Boyd and Zhengfei Guan

plasticulture system has numerous benefits, including increased soil temperature, reduced soil evaporation, improved fertilizer-use efficiency, soil conservation, and weed suppression. All these factors combined promote crop growth and increase yield ( Anikwe et

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Amaya Atucha, Ian A. Merwin and Michael G. Brown

mulch benefits in orchards to weed suppression during the growing season, but this would not explain why trees grew larger in Mulch than in PreHerb plots at our site. The Mulch system provided adequate weed suppression during the first several years of

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Emily R. Vollmer, Nancy Creamer, Chris Reberg-Horton and Greg Hoyt

tissue C:N ratio favorable to rapid decomposition and N mineralization compared with a grass ( Creamer and Baldwin, 2000 ). Grass mulch or residue is more suited to provide physical weed suppression because it decomposes more slowly, but it may also cause

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Rick A. Boydston, Treva Anderson and Steven F. Vaughn

, including weed suppression ( Al-Khatib and Boydston, 1999 ; Borek and Morra, 2005 ; Boydston and Al-Khatib, 2006 ; Brown and Morra, 1995 ; Oleszek, 1987 ; Oleszek et al., 1994 ; Vaughn and Boydston, 1997 ). In a 2-year study, MSM applied at 64.4 g·m −2

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Ibrahim I. Tahir, Sven-Erik Svensson and David Hansson

negative impacts on soil quality and our results showed that tillage decreased soil respiration, perhaps as a result of mechanical effects on soil structure. Acetic acid (V) applied at a rate of 3060 L·ha −1 showed very good weed suppression in comparison