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Soil solarization requires that the soil first be prepared for
planting. First, cultivate the soil and smooth the surface, but
do not pack it down. Next, wet it very well. After irrigating, immediately
roll clear polyethylene plastic tarps one mil (0.001 inch [0.025
mm]) thick over the surface, smoothing out air pockets. Thicker
tarps, 1.5 to 2 mils can be used in windy areas (avoid thicker 4
- 6 mils as they are more reflective and don't allow the soil to
heat up as much). Bury the edges of the tarp with soil. Tarps should
be left on the soil surface for 4 - 6 weeks during the hottest part
of the year. Do not leave the tarp on for more than 6 - 7 weeks,
as it will become brittle and difficult to remove.
Common
weeds controlled and not controlled by soil solarization
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