تأثير بعض الفطريات و المستخلصات النباتية في مكافحة حشرة دوباس النخيل Ommatissus binotatus var. lybicus De Berg. (Tropiduchidae : Homoptera)‎

Abstract EN

The following fungi Alternaria alternate, Aspergillus niger, Aspergillus terreus, Rhizopus sp.

were isolated from the nymphal and adult insters of the Dubas Date plam insect.

Ommatissus binotatus var.

lybicus De Berg.

Fungal inoculums of 106 spores/mel revealed a rate of mortality (42, 38.1, 35.9, 35.9 and 35.5)% respectively on the nymphal for both Trichoderma harzianum, T.viride, Beauveria bassiana, A.alternata, Rhizopus sp.

The spore suspension of T.harzianum and T.viride on nymphal instarse showed rate of mortality (68.5, 65.8)% respectively after 72 hourse.

The effect of culture of T.viride, T.harzianum, Rhizopus sp.

on namphal instars mortality was (51.2, 50.6 and 49.6)% respectively.

The effect of plant extracts for Clerodendron inerme, Nerium oleander on nymphal instars mortality was (62.6, 60.4)% respectively after 72 hourse.

Its found that concentration 1.5% was mortalities 68.5% after 10 Days of treatment.

It field the spore suspension T.viride on nymphal and adult insters of the insect revealed 64.2% after 10 days treatment.

While under field conditions spore suspension caused the highest mortality 63.1% when used date syrup compared with residue treatment.

It field the plant extracts of Clerodendron inerme on nymphal and adult insters revealed 49.3% after 10 days of treatment.

While the plant extracts caused the highest mortality 47.9% when used date syrup compared with residue treatment.