دراسة حساسية أصناف من الكمثرى و التفاح لمرض اللفحة النارية و مكافحته كيميائيا

الملخص EN

Results for screening four pear cultivars and four apple cultivars for their susceptibility to fire blight using two methods for inoculation indicated that Carmen cultivar was the most susceptible among the tested cultivars then William, Lackstone and Leckont respectively.

While the four apple cultivars tested Anna, Fistabella, Ajmi and Royal didn't differ significantly in their susceptibility to fire blight.

Chemical control results of artificialy infected cultivars in the field indicated that Ciprofloxacin (50mg/liter water) was effective in reducing disease incidence to 0.22% for pear and 0.28% for apple in comparison with Revanol (1ml/liter water) and Cupprosate (3ml/liter water).