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العنوان
Effect of some Formulated Pesticides on Tetranychus Urticae and its Predator Amplyseius Gossipi /
المؤلف
Magouz, Refaat Ibrahim E.
هيئة الاعداد
باحث / رفعت ابراهيم السيد معجوز
مشرف / محمود ابو العمايم
مناقش / عبد العزيز حسنى
مناقش / محمد عبد السلام
الموضوع
Pesticides.
تاريخ النشر
1997.
عدد الصفحات
132 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الزراعية والعلوم البيولوجية (المتنوعة)
تاريخ الإجازة
1/1/1997
مكان الإجازة
جامعة طنطا - كلية الزراعة - Pesticides
الفهرس
Only 14 pages are availabe for public view

from 148

from 148

Abstract

Phytophagous mites are potentially a major pest of the main food, fibre and ornamental crops. This potential for damage has become i~icrcasingly evident during the last few decadcs. Spiclcr mites nuy c:~usc severe damage which results in very heavy losses in such crops as citrus, beans, cotton. apples and many other horticultural and ornamental crops. It is I~IIOWII tlul spider miks do iiot conlnlo~ilyc :~usc \vitlcsl)~,c:~ctll:i 111;1gci rr agroecosystems where productivity is for below its potelitial, regulatory li~ctors such as diseases and predators control the spider mite population, while in agroecosysteins where production levels arc high broad-spectrum pcstic~dcs :\re usually wsed. The pesticides have a more aclverse cll’cct on tllc prcrl:~tors rather than on the spider mites themselves thus ennhling an tbrc0;1’ llthie later. Ixw levels of pesticides which do not cause mortality cm inlluence the si~cccsso l’:~ prcdntor ns a result of bchaviournl mociific:~tion. The present study was directed to investigate the toxic effect of some insecticide against the adult females oi’tlle two-spotted spider mite 7i.ttre~vclw1s~ ~rficnaen d to examine the sublethal ellkcts of these insccticiilcs on fecundity of this mites and its predator Arnp(v.reim gossipi and on hatchability of spider mite eggs. The feeding behavior of the predator under sublethal insectecidal effect was also studied.