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Paper mulches evaluated for commercial vegetable production
Date:12/28/2010

LEXINGTON, KY Polyethylene mulches, used widely in commercial vegetable production to improve crop yields and produce quality, have distinct disadvantages. Disposal options are limited, and plastic mulches often end up in landfills, being burned, or disposed of illegally. Recycling polyethylene mulches is also a challenge; the mulches used in large-scale vegetable production are contaminated with too much dirt and debris to be recycled directly from the field in most power plants and incinerators. Timothy Coolong from the University of Kentucky's Department of Horticulture published a report on paper mulches in HortTechnology that may give vegetable producers viable alternatives to polyethylene.

The recent trend toward eco-friendly production techniques has resulted in a second look at biodegradable paper mulches, which are manufactured from renewable resources and do not have to be removed from the field after harvest. Paper-based mulches have been used in agriculture since 1914, but some paper mulches deteriorate rapidly under field conditions, reducing their effectiveness. Paper mulches have other limitations; since they are heavier than polyethylene, transportation costs are higher, and paper mulches are inherently more expensive than polyethylene.

Coolong's research evaluated the performance of four readily obtainable papers compared with traditional black plastic using conventional plastic laying equipment and a water wheel transplanter. The experiments were conducted in Lexington, Kentucky, over two growing seasons using yellow squash. Crop yield and quality, weed biomass, soil temperatures under the mulch, and mulch degradation were evaluated. Four paper mulches50-lb kraft paper, 50-lb polyethylene-coated kraft paper, 40-lb white butcher paper, and 30-lb waxed paperwere compared with 1-mil black polyethylene mulch in two weeding treatments (bare-ground hand-weeded and bare-ground nonweeded).

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Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

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Paper mulches evaluated for commercial vegetable production
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