تاثير تعقيم التربة بالفورمالين و التشميس في فطور التربة في البيوت المحمية

The study was carried out to comparison between of of three controlling treetments, of soil-borne fungi in greenhouses. The treetments were as follows: An treeted control, Formalin 3%, soil Solarization + animal manur and solarization for 50 days, and 0 , 5, 10 ,15 and 20 cm depth. Results showed significant differences between the control and disinfection treetments in reduction the total number of fungal propagules of pathogenic fungi: Fusarium spp., Alternaria spp. , Verticillum spp. , Sclerotium spp. At the four deapth, and the results showed that : 100% reduction at 20 cm in the number of Verticillum spp. at the average of soil temperature between 37.90 - 43.72°c, and (97.25%, 92.86%, 94.43 %) of Fusarium spp. , Alternaria spp., Sclerotium spp. respectevily at the average of soil temperature 51.59 -54.1°c and (98.38%, 93.92%, 95% ) at the average of soil temperature 53.15-54.71°c, in solarized soi land solarized soil+ animal manur treetment at 0-5cm deapth. The chemical control resulted 100 % reduction in the number of Fusarium spp. , Alternaria spp., Verticillum spp. and 94.43% of Sclerotium spp. at the deapth 0-5 cm in all treetments, and this reductions dicreased with increasing deapth.