NY025 - Soil solarisation of a nursery potting mix

Clear Polyethylene Mulch (CPM) or clear plastic eliminates soilborne disease and increases soil nutrient availability and hence plant growth, this 1990-92 study found. The study also showed that two layers of 25-50micron plastic mulch were more effective than one and that the mulch controlled most annual and perennial weeds. The mulch is particularly effective in the hot summer months.