Evaluation of some commercial formuilations against Spodoptera littoralis and Hypera brunneippennis larvae. | ||
| Annals of Agricultural Science, Moshtohor | ||
| Article 12, Volume 53, Issue 2 - Serial Number 4, 2015, Pages 295-302 PDF (370.53 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/assjm.2015.109820 | ||
| Abstract | ||
| The insecticidal activity of three commercial Bt – formulations and one fungus; namely DipelDf , W- Bus and Protecto (Bacillus thuringiensis var.kurstaki ) and Biofly ( Beauveria bassiana) were tested against 2nd and 4th instar larvae of Spodoptera littoralis (Boisd) and Hypera brunneipennis (Boheman) were studied under laboratory conditions. Results revealed that Bt- formulations caused the larval mortality after treatment of S. littoralis 2nd and 4th larval instars ranged from 40 to 100 % and 32.5 to 92.5 % and reached 100 ,85 and 100 % for H. brunneipennis, respectively at the highest concentration after 7 days of treatment compared to 77.5 % and 60 % for S. littoralis and 95 and 85 % for H. brunneipennis treatments by Biofly. The DipelDf and W-Bus were highly efficient on the insect larvae, followed by Biofly and Protecto, respectively. Based on the LC50 values, DipelDf was the highest toxic to S. littoralis and H. brunneipennis than that of the other compounds. Pupation and adults emergence percentages were reduced by all treatments compared to control. | ||
| Keywords | ||
| Spodoptera littoralis; Hypera brunneippennis; commercial products; efficiency | ||
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