Acta Phytopathologica et Entomologica Hungarica (2014) 49, 117-127
Nour El-Hoda A. Zidan (2014)
Insecticidal efficacy of spinosad, Beauveria bassiana and Metarhizium anisopliae in combination with diatomaceous earth, for controlling Sitophilus oryzae (L.) (Coleoptera: Curculionidae) infesting stored wheat
Acta Phytopathologica et Entomologica Hungarica 49 (1), 117-127
Abstract: Laboratory experiments were carried out in order to evaluate the insecticidal effect of three bio-insecticides (i.e., Spinosad, Beauveria bassiana and Metarhizium anisopliae) against Sitophilus oryzae on wheat. In parallel, wheat was treated with diatomaceous earth (DE) at one dosage rate, 2 g/kg of wheat either alone or in combination with three bio-insecticides applied at three dosage rates for each. Mortality of adults was counted 24 h, 48 h, 7 days, and 14 days later. In general, the combination of DE with three bio-insecticides increased the mortality rates of S. oryzae compared with treatments alone due to a potential additive effect. The highest spinosad/DE dosage combination resulted in the greatest mortality against S. oryzae compared with other treatments at all exposure periods. Moreover, significantly less progeny were produced on wheat treated with the highest dosage of spinosad with DE, in comparison with the other treatments. The results of this study suggest that bio-insecticides can be used effectively with DE against S. oryzae by exhibiting additive effect.
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Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
control - general
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
formulation/storage of bioagents
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Sitophilus oryzae | Stored grain | |||
| Beauveria bassiana (entomopathogen) | Sitophilus oryzae | Stored grain | ||
| Metarhizium anisopliae (entomopathogen) | Sitophilus oryzae | Stored grain |
