Nematodes have plagued the raised beds in the garden for some time now. So, two beds remain fallow this summer. I'm following the directions from UC Davis for solarization one bed at a time. The soil must be turned, smoothed, and irrigated deeply. An application of chicken manure is suggested to be successful. While the bed is still moist, clear plastic is applied on top of the soil. Thinner is better; but very thin may tear. 4 ml is being used. The plastic sheeting needs to be anchored down then left for 4 - 8 weeks. The plastic builds up the soil temperature to kill pests and seeds.
On about August 13 (8 weeks), the plastic can be removed from this bed and discarded. It will be ready for planting a fall salad garden.