Preliminary Study of the Side Effects of some Pesticides on Natural Enemies in Apple Orchard in Al- Sweida Governorate
| Title | Preliminary Study of the Side Effects of some Pesticides on Natural Enemies in Apple Orchard in Al- Sweida Governorate |
| المـؤلفون | أ.د. عبد النبي بشير و أ. د. زكريا الناصر |
| الكلمات المفتاحية | مبيدات | متطفلات | مفترسات | تفاح |
| Keywords | Pesticides | Parasitoids | Predators | Apple |
| Abstract | This research was conducted to study the side effects of some insecticides (mineral oil, dimethoate, chlorpyrphos-ethyl) and several fungicides such as (sulphur, thiophanate- methyl and Copper Oxychloride) on the natural enemies in apple rchared in Al-Sweida Governorate, during the season 2006-2007. The results revealed that winter spray of pesticides has not any negative effects on natural enemies on apple trees. Where the April treatment caused significant reduction in number of the studied predators : Coccinellidae,Syrphidae and Chrysopidae, reducing the……………… .. |