أوضحت نتائج التجربة المختبرية لتقدير الكفاءة النسبية لمعاملات المستحضرات الفطرية في مكافحة نوعين من حشرات المَن هما Aphis gossypii و fabae أن المستحضر الفطري Lecanicillium muscarium هو الأكثر كفاءة باقي المستخدمة الدراسة وهي , Isaria fumosorosea Beauveria bassiania acridum Metarhizium إذ بلغت النسبة المصححة للموت بعد 7 أيام المعاملة لحوريات مَن القطن 92.8 % وللبالغات 88.78 حين كانت الباقلاء الأسو...

This is the first study to research management strategies for cotton leafroll dwarf virus (CLRDV) in southeastern U.S. The efficacy of aphid vector reduce final CLRDV incidence was investigated concurrent with efforts monitor population dynamics and timing spread. Adjusting planting date insecticide applications did not CLRDV, which confirmed 60–100% plants per plot using RT-PCR. Aphid density ...

Abstract Endophytic microorganisms reside within plant tissues and have often been found to promote plant growth. In this study, endophytic microorganisms were isolated from the roots, stems, leaves, and seeds of healthy drunken horse grass, Achnatherum inebrians (Hance) Keng (Poales: Poaceae), through the use of a grinding separation method and identified by a dual approach of morphological an...

Uridine diphosphate (UDP)-glycosyltransferases (UGTs) are major phase II enzymes that conjugate a variety of small lipophilic molecules with UDP sugars and alter them into more water-soluble metabolites. Therefore, glucosidation plays a major role in the inactivation and excretion of a great variety of both endogenous and exogenous compounds. In this study, two inhibitors of UGT enzymes, sulfin...

Top-down force is referred to arthropod pest management delivered by the organisms from higher trophic levels. In the context of prevalent adoption of transgenic Bt crops that produce insecticidal Cry proteins derived from Bacillus thuringiensis (Bt), it still remains elusive whether the top-down forces are affected by the insect-resistant traits that introduced into the Bt crops. We explored h...

We describe the vertical and horizontal distribution of the cotton aphid Aphis gossypii Glover within a cotton plant in two cotton (Gossypium hirsutum Linnaeus) cultivars (BRS Safira and BRS Rubí) with colored fiber over the time. Measurements of aphid population dynamics and distribution in the cotton plants were recorded in intervals of seven days. The number of apterous or alate aphids and t...