Efficiency of some medicinal plant extracts and an entomopathogenic fungus, Metarhizium anisopliae separately and in combination with proteus® against the large cabbage butterfly, pieris brassicae L.

Khorrami, F. and Soleymanzade, A. and Ghosta, Y. and Poushand, F. (2018) Efficiency of some medicinal plant extracts and an entomopathogenic fungus, Metarhizium anisopliae separately and in combination with proteus® against the large cabbage butterfly, pieris brassicae L. Acta Phytopathologica et Entomologica Hungarica, 53 (2). pp. 213-220. ISSN 0238-1249

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Abstract

Pieris brassicae (Lepidoptera: Pieridae) causes great qualitative and quantitative damage to cabbage crops. The present research was conducted to assess the synergistic/antagonistic interactions of Satureja hortensis, Trachyspermum ammi, Ziziphora tenuior, Cuminum cyminum, and Foeniculum vulgare methanolic extracts with Metarhizium anisopliae and Proteus® against P. brassicae pupae under laboratory conditions. The tested methanolic extracts when combined with M. anisopliae and Proteus® possessed synergistic efficacy (except for M. anisopliae + ammi). Probit analysis of extracts revealed S. hortensis as the most effective extract with LC₅₀ value equivalent to 43.49 ppm. Proteus® also exhibited a high efficacy (LC₅₀=48.88). The results support the potential of cumin, fennel, savory and ziziphora methanolic extracts to improve the efficacy of M. anisopliae. Results demonstrated that all tested extracts integrated with Proteus® provide more effective control of P. brassicae than Proteus® alone.

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