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  • Author or Editor: George Upton x
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We have developed and field tested a plastic mulch system that changes color with season. The system uses a photodegradable polyethylene mulch placed on top of a degradable or nondegradable polyethylene mulch of a different color. As the top polyethylene mulch degrades with increasing exposure to sunlight, the color of the bottom polyethylene mulch is exposed. We have successfully evaluated the effects of a black photodegradable mulch placed on top of a white nondegradable mulch on mulch color transition, soil temperatures under the mulch, and the production of spring planted tomatoes. The mulch color system affected soil temperatures and average tomato fruit size, but had no effect on number of fruit produced. We have also produced and are field testing a coextruded polyethylene mulch with the desired black and white photodegradable colored layers.

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