تأثير بعض عوامل المكافحة الأحيائية و تكاملها مع المبيد الفطري تشيجارين في مكافحة مرض التعفن الرايزوكتوني على نباتات الخيار

الملخص EN

The results of the laboratory experiment showed that the pesticide Tachigaren inhibited the growth of the pathogenic fungus Rhizoctonia solani completely when it was used at a concentration of 2 ml/L, and pathogen inhibition reached 100%, since the fungus did not show any growth, as compared to 1.52 cm growth when 1 ml/L concentration was used.

The diametrical growth of pathogenic fungus R.

solani when treated with the fungus Trichoderma harzianum (Th) leachate reached 2.63 and 4.56 cm when it was used at 10 and 5 ml/L concentrations, respectively.

Whereas, the diametrical growth of the pathogenic fungus when using yeast Saccharomyces cerevisiae (Sc) extract was 3.86 and 8.1 cm at the concentrations of 10 and 5 ml/L, respectively.

Results of the field experiment showed a significant decrease in the incidence and severity of infection from 82.2% and 66.96% in the treatment of pathogenic fungus alone, to 24.43% and 19.60% when applying the triple treatment T.h + S.c + fungicide under natural infection conditions.

The treatment of triple resistance T.h + S.c + pesticide), under infection conditions.

This triple treatment achieved a significant increase in both fresh and dry weight of the cucumber plants, where it reached 45.50 and 9.76 g compared to 21.10 and 2.81 g.

for the pathogenic fungus alone treatment.

The triple treatment under natural infection conditions achieved a significant increase in plant height and yield, where it reached 97.66 cm and 1.926 kg/plant compared with 28.66 cm and 0.368 kg/plant in the pathogenic fungus alone treatment.