| Titles |
|
English :
|
Interaction between the Entomopathogenic Fungus, Beauveria bassiana and some Insecticides against the Whitefly, Bemisia tabaci (Genn.) (Homoptera: Aleyrodidae).
|
|
Arabic :
|
التداخل بين الفطر الممرضBeauveria bassiana وبعض المبيدات الحشرية ضد حشرة الذبابة البيضاء"
|
|
| Abstract |
In vitro inhibition of 4 different insecticides Cord, Imaxi, Orizon and Achook on the entomopathogenic fungus, Beauveria bassiana growth was tested. Three concentrations of each insecticide; recommended, half and 1\4 of recommended concentrates (RC) were used. There was no inhibition of mycelial growth with Imaxi at the three concentrates 100 %. On the other hand, Orizon and Achook had the same effect 100% at 1/2RC and 1/4RC, but at RC it exhibited 50% mycelial growth. However Cord exhibited 50% mycelial growth at both RC and 1/2RC, while at 1/4RC mycelial growth was approximate 75%.
In addition, the efficiency of tested combinations (Biovar plus each of Cord, Imaxi, Orizon and Achook) was evaluated under greenhouse conditions on cucumber against the whitefly, Bemisia tabaci (Genn.) at the recommended and half recommended rates. The combinations of the bioinsecticide: Biovar 4% WP at recommended concentration, (200 gm/100 L.) plus Imaxi 35%EC at its half recommended rate ½RC (37.5 cm3/100L.); Biovar 4% WP at its RC plus Orizon 11%EC at its ½RC (25 cm3/100L.) and Biovar 4% WP at its RC plus Achook 0.15%EC at its ½RC (93.7/100L.) achieved significantly control of the whitefly, B. tabaci by decreasing the application rates of pesticides and obtaining good production with less residuals and good quality.
Also, the co-toxicity resulted from adding of the Biovar to the Cord induced an irregular joint action against B. tabaci stages and resulted in dominated antagonistic effect. An additive effect was dominated in case of the addition of Biovar to Imaxi, Orizon and Achook by which the total mortality of the combination was higher than the mortality of summation of each compound separately. Thus, the joint action of two compounds in the mixtures was more effective against the tested insect than each compound alone.
|
| Publication year |
2009
|
| Pages |
41-48
|
| Organization Name |
Plant Protection Research Institute (PPRI)
|
| City |
الجيزة
|
| serial title |
الجمعية المصرية للمكافحة البيولوجية للآفات
|
| Author(s) from ARC |
|
| Agris Categories |
Plant diseases
|
AGROVOC
TERMS |
Aleyrodidae.
Beauveria bassiana.
Bemisia tabaci.
Entomogenous fungi.
Homoptera.
Insecticides.
|
| Publication Type |
Journal
|