Parasitism byMeteorus rubens onAgrotis ipsilon as affected by supplementary food and kairomone, field studies |
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| Authors: | F N Zaki K T Awadallah and M A Gesraha |
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| Institution: | (1) Present address: Pests and plant protection Dept., National Research Centre, El-Tahrir St. Cod., 12622, Dokki Dokki, Cairo, Egypt;(2) Biological Control Lab., Fac. Agriculture, Cairo Univ., Giza |
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| Abstract: | Field experiments in clover field showed that releasing of 10 matedM. rubens females/m2, increased parasitism amongA. ipsilon larvae from 16.7% at 0 to 43,3% after 10 days. Also, releasing 10 females/m2 after spraying 3% molasses in tomato field increased parasitism from 4% at 0-day to 27.5% after 10 days amongA. ipsilon larvae. Spraying molasses and kairomone together on maize plants, increased markedly the rate of parasitism amongS. cretica larvae comparing with parasitism obtained when each of them was sprayed alone. The release ofM. rubens in a rate of 10 females/m2 after spraying molasses and kairomone induced a significant increase in the rate of parasitism amongS. cretica larvae after 10 and 15 days compared to releasing 3 or 4 females of the parasitoid. A significant increase in parasitism amongS. cretica larvae on tomato after 10 and 15 days was recorded whenM. rubens was released at the rates of 5 and 10 females/m2, after spraying molasses and kairomone, compared to other treatments. |
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