| Titles |
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English :
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Evaluation of the fungus, Beauveria bassiana (Bals.) Vuill as a bio-control
agent against the Red Palm Weevil, Rhynchophorus ferrugineus (Oliv),(Coleoptera: Curculionidae).
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Arabic :
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تقييم الفطر Beauveria bassiana أحد عناصر المكافحة الحيوية لمكافحة سوسة
النخيل الحمراء
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| Abstract |
Laboratory and semi-field trials were carried out to evaluate the efficiency of the fungus, Beauveria bassiana against the red palm weevil (RPW), Rhynchophorus ferrugineus. At concentrations of 1x109, 1x108, 1x107, 1x106 and 1x105 conidia / ml, mortalities of RPW adults were 86.7, 73.3, 66.7, 46.7 and 40.0 %, respectively. The LC50 was found to be 7.3x105 conidia / ml and the LT50 was 8.87 days at the concentration of 1x109 conidia /ml .
Rearing of RPW adults on leaf-axils of date palms at 0,1,2,3 and 4 days post treatment with B.bassiana suspension at a concentration of 1x109 conidia / ml caused 26.7, 6.7, 6.7. 0.0 and 0.0 % mortalities, respectively, in such insects. In addition, release of 10 RPW females in a caged fungus-treated date palm off-shoots resulted in severe infestation and fall down of the tree.
Confining B.bassiana-contaminated males with uncontaminated females of RPW in plastic boxes and fed on pieces of sugar-cane resulted in mortalities of 75% in males and 20% in females.
Releasing B.bassiana-contaminated males of RPW with contaminated females on 3 caged date palm off-shoots (4 years old) resulted in fall down of such trees 4 – 5 months after release. Large numbers of RPW larvae, in different instars, and cocoons were found at or just below the soil surface inside the fallen trees.
As a conclusion, our studies obviously revealed that the fungus, B.bassiana is not recommended as a bio-control agent for RPW, R.ferrugineus.
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| Publication year |
2011
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| Pages |
125-129
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| serial title |
مجلة الجمعية المصرية للمكافحة البيولوجية للأفات
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Beauveria bassiana.
Biological control.
Curculionidae.
Palmae.
Pathogens.
Rhynchophorus ferrugineus.
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| Publication Type |
Journal
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