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Synergistic Effect of Gamma Radiation and Nano Silica on the Cowpea Weevil; Callosobruchus Maculatus Reproduction and Mortality |
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PP: 39-43 |
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doi:10.18576/jrna/070205
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Author(s) |
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R.M. Sayed,
Nilly A.H. Abdelfattah,
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Abstract |
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| Callosobruchus maculatus is the most destructive stored seeds pests. The current study was planned to study the synergistic impact of inherited sterility technique and nano silica to control C. maculatus. The newly emerged adults were irradiated with 20Gy and different mattings were made, the results revealed that when both sex was irradiated the no. of the deposited eggs was significantly declined that other mattings. Different concentrations of nano silica (0.0012, 0.0025, 0.005, 0.01 and 0.015 gm/5gm cowpea) were used against normal, irradiated and F1 C. maculatus adults. The insecticidal studies showed that the mortality increased with nano silica concentration increase. In addition, the results exposed that the irradiation increased the susceptibility of the adults. The fecundity and the emerged generation from the infested seeds were significantly reduced in F1 and irradiated adults’ experiments. Consequently, we could conclude that the combination of nano silica and gamma radiation could be considered a promising control program for C. maculatus. |
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