تأثير بعض الفطريات الإحيائية و المستخلصات الكحولية لنباتي الشيح و الحنظل في حياتية الأطوار اليرقية لدودة البنجر السكري Spodoptera exigua Hubn (Noctuidae : Lepidoptera)‎ على الطماطة

الملخص EN

This experiment results of S.

exigua larval instars sensibility for Beauveria bassiana (BC) isolate , Trichoc/erma viride and Fusarium sp.

for both 1st and 3rd larval instars reached a rate of mortality of 66.2 , 63.5 , 59% respectively after 72 hours from treatment.

It 1st larval instars more sensitivity for the fungal suspension in comparison with 3rd larval instars, it reached a rate of mortality 59.2 , 52.8% respectively.

The effect of alcoholic extracts for Field Southern Wood on 1M, 3rd larval in stars S.

exigua it reached 58.89 .

52.06% respectively after 72 hours from treatment.

Its found that concentration increases from alcoholic extracts the effect on the along with the increase of the mortalities on larval instars .

it reached 46.89.

53.73, 67.21% in concentration of 0.5 , I , 1.5% respectively after 72 hours.

The percentage ratio of mortalities of alcoholic extracts for colocynth was 64.23.

61.14% respectively for 1st and 3rd larval instars the rate mortalities of concentrations 1.5% reach 82.51% after 72 hours.