تأثير مثبط النمو الحشري ماتش في حفار ساق الذرة Sesamia cretica Led. (Lepidopetra : Phalaenidae)‎ تحت ظروف المختبر و الحقل

الملخص EN

The effect of IGI Match (Novartis) was tested against insect stages of maize stalk borer, Sesamai cretica Led.

(Phalaenidae: Lepidoptera) under laboratory and field conditions.

Match at 200 ppm decreased egg hatch ability to 40 and 64% of 1 and 4 days old eggs, while lower concentration (25 ppm) had a light effect.

Larvae emerged from treated eggs died after hatching , the mortality percent reached 75 and 92% for 1 and 4 days old eggs treated with 200 ppm.

However the mortality decreased to 5 and 6% at 25 ppm treatment for both ages.

Treatment of newly hatched larvae with 200 ppm killed all the larvae compared to 14% death of last instar larvae treated with the same concentration.

Match treatment produced malformed larvae, small pupae with light body weight, short adult life span with low fecundity.

Adults fed on Match-sugar solution formulation had a reduced life-span and fertility compared with normal adults.

Corn plants treated with Match at 100 ppm and inoculated with larvae maintained good protection against larvae development and further insect infestation.

IGI match showed promising results for managing the infection of maize stalk borer under field conditions.