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  • Author or Editor: A. M. Liptay x
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The effectiveness of polyethylene-coated paper mulches in altering soil environment was investigated. The increase in maximum daily soil temperatures under mulch compared to bare soil was approximately the same for a clear polyethylene laminated on black paper as the clear polyethylene alone. Minimum daily soil temperatures were higher under laminated paper mulch than under black polyethylene. Polyethylene coated paper was as effective as polyethylene in reducing soil moisture evaporation. Studies of bulk density indicated that soils under all mulches were less compacted than the bare soil. Nitrate N levels under mulches were also higher than in the bare soil. The disposal problem encountered with polyethylene mulches at the end of the growing season is eliminated by the use of polyethylene coated paper mulches because the very thin coating of polyethylene disintegrates during the growing season, and the residual paper decomposes in the soil after tilling.

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