تاثير تشميس التربة في مكافحة بعض فطور تربة البيوت البلاستكية

We carried out a study to determine the effectiveness of solarization using a 40 micron thickness of either transparent or black polyethylene cover sheets for forty days during summer. Mycosis species counts were investigated in the treated soils. Results showed a decrease in some mycosis spp., especially those of Rhizoctonia sp, Fusarium sp, Pythium sp, and Rhizopus sp, while the effect on Trichoderma sp. was very limited compared to uncovered soil. Interestingly, the effect of transparent cover sheets was significantly greater in decreasing these mycosis species compared to black sheets. We concluded that solarization is a hazard free method for human and environmentally sound substitute to the use of chemicals in sterilizing greenhouses soils to control mycosis spp.