Evaluate the effectiveness of the fungus Beauveria bussiana(Balsamo) Vill and Silica Gel on Oryzaephilus surinamensis L. in laboratory | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 8, Issue 3, July 2012, Pages 150-158 | ||
| Authors | ||
| Abdul Hamid Mohammad Hammoudi; Husham Naji Hamid | ||
| Abstract | ||
| The study included preparation of five concentrations of the fungus Beauveria bussiana L. 105 , 5105 , 106 , 5106, 107 Conidia / ml the Nutrient medium which contained wheat, maize and rice. And three replicates for each concentration, each repeated 20 complete insect Full been monitored over a thirty-five days, the results showed that the percentage of the dead of insects during the period of the experiment are 44.33% , 54% , 62.67%, 72% and 81.66% for concentrations of 105, 5105, 106, 5106 and 107 Conidia / ml) respectively .The percentage of the death during the first week of 4% while it was100% during the the fifth week. Silica gel was tested as a protective substance for seed cowpea, wheat and cereal and wheat grouts, also it was mixed with five concentrations 1 , 2 , 3 , 4 and 5% against infection, Also, the effect of silica gel was tested against the rate of killing and their development and the rate of loosing in weight of Nutrient medium after two weeks of treatment. The results showed that silica gel resulted in 100% of killing rate for Oryzaephilus surinamensis L. after 366 hours for all concentrations. The effect of silica gel on the development of the insect was clear, since neither growth nor development were occurred at the concentration of 5%, in addition , the rate of killing reached 100% for complete O. surinamensis L. after two weeks. No loss in the weight of seeds at the highest concentrations 4% , 5% with significant difference comparing with control, So for the previous results, Silica gel could be used as a protective media for seeds at concentration of 5% against of beetles storages. | ||
| Keywords | ||
| Beauveria bussiana; Silica Gel; Oryzaephilus surinamensis | ||
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