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Paige L. Herring, Abbey C. Noah, and Helen T. Kraus

, providing no nutrients as media, and is acidic. As a result, much research has focused on alternative resources for peat in the greenhouse industry ( Abad et al., 2001 ; Ostos et al., 2008 ; Raviv et al., 1998 ). Composts have also proved to suppress soil

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Joseph G. Masabni and S. Alan Walters

proper soil preparation and plant establishment, and reduced pesticide, water, and fertilizer inputs. The protocol developed for Earth-Kind ® vegetable production includes: 1) an annual soil test; 2) incorporating a 4 to 6-inch layer of compost before

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Danielle D. Treadwell, George J. Hochmuth, Robert C. Hochmuth, Eric H. Simonne, Lei L. Davis, Wanda L. Laughlin, Yuncong Li, Teresa Olczyk, Richard K. Sprenkel, and Lance S. Osborne

, peat–perlite–compost in pots ( Succop and Newman, 2004 ), compost–peat in 72-count trays ( Clark and Cavigelli, 2005 ), compost–peat in Styrofoam transplant flat ( Raviv et al., 1998 ), peat–perlite in 128-count trays ( Russo, 2006 ), a range of peat

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Qingren Wang, Waldemar Klassen, Edward A. Evans, Yungcong Li, and Merlyn Codallo

soil and water in such a fragile region. Composts of municipal solid wastes, including yard wastes, paper, cardboard, food waste, textiles, and so on, have shown high potential to improve soil fertility and production of various crops. For instance

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Ajay Nair, Mathieu Ngouajio, and John Biernbaum

). Growers often design their own mixes using compost and other organic amendments. Organic growers largely depend on compost to manage nutrient requirements of growing transplants. Incorporation of large proportions of compost in the growing medium is not

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John E. Beck, Michelle S. Schroeder-Moreno, Gina E. Fernandez, Julie M. Grossman, and Nancy G. Creamer

based soil management practices, such as cover crop rotations, additions of compost and vermicompost are important practices in organic systems, but may also serve as important transitions from fumigation in conventional strawberry systems. These soil

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H.M. Mathers, S.B. Lowe, C. Scagel, D.K. Struve, and L.T. Case

in the nursery industry today are pine bark, hardwood bark, sand, soil, industrial clays and aggregates, composted yard, garbage and animal wastes such as biosolids/sludge, rice hulls, peanut hulls, mushroom compost, peatmoss, coir (a by-product of

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Jesse Puka-Beals and Greta Gramig

living mulches and biodegradable surface-applied mulches are not well known. To address these challenges, we adapted two erosion control tactics described in Faucette et al. (2006 ), hydromulching and compost blankets, and applied them as surface mulches

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B. L. Sawhney


Analyses of a number of leaf composts showed that the composts generally contain excessive salts. Greenhouse and laboratory observations suggest that when leaf compost is used in large proportions in a soil mix for container-grown plants, salts may damage young seedlings transplanted in the mix. Excess salts can be removed by leaching with liberal quantities of water before transplanting. Leaf compost is well-buffered at about pH 7, which is considered optimal for most plants. However, since leaf compost tends to resist acidification, it may cause the pH of mixes containing large amounts of compost to remain higher than that considered suitable for such plants as azalea, rhododendron and laurel.

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George Kotsiris, Panayiotis A. Nektarios, and Angeliki T. Paraskevopoulou

( Beattie and Berghage, 2004 ) with an organic matter that varies according to the green roof type ( FLL, 2008 ). In most cases, the organic matter of green roof substrates is composed of peat but composts offer an appropriate alternative in an effort to