| Autor: |
Khalaf, Mohammed Z., Tareq, Ahmad M., Naher, Falah H., Salman, Adnan H., Khalaf, Haitham S. |
| Předmět: |
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| Zdroj: |
Pakistan Entomologist; 2018, Vol. 40 Issue 1, p1-6, 6p |
| Abstrakt: |
The efficacies of the entomopathogenic nematodes (EPN), Rhabdits blumi and the entomopathogenic fungi (EPF), Beauveria bassiana has been studied as biocontrol agents against the date palm tree borers (Arabian Rhinoceros Beetle), Oryctes agamemnon arabicus (Coleoptera: Scarabaidae: Dynastinae) in laboratory and field trials, during 2015. Laboratory results demonstrated that direct spray of 1000 infective juveniles (IJs) per ml of R. blumi on Arabian Rhinoceros Beetle, Oryctes agamemnon arabicus (ARB) larvae caused 71.67% mortality less than 72 hours and 15% in the adults. While, treating the food source of the larvae (pieces of fresh tissue of the frond bases) with the same dose and period resulted in 48.33% mortality in larvae and 10% in the adults. Laboratory results also showed that usin concentration 1x109 conidia/ml-1 of B. bassiana as direct spray of the O. a. arabicus larvae caused 66.7% mortality and 60% as treatment of the food source. Field experiments results showed that injection of 50 ml per palm tree with a concentration of 1000 IJs/ml of R. blumi inflected about 42% mortality in ARB larvae infested the tree. Meanwhile, injection of 50 ml having concentration of 1x109 conidia/ml-1 of B. bassiana imposed 50% mortality in larvae. Results of this investigation illustrate the possibility of using R. blumi and, B. bassiana as a bicontrol agents against palm borers in IPM programs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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