Effect of Selected Pesticides on the Growth Parameters of Metarhizium anisopliae (Metch.) Sorokin
In vitro compatibility studies were conducted with the green muscardine fungus, Metarhizium anisopliae (Metch.) Sorokin and commonly used pesticides. The test insecticides viz., spinosad, indoxacarb, novaluron and cartap hydrochloride after 21 days recorded 6.42, 5.86, 5.74 and 5.30 cm radial growth of M. anisopliae, respectively and all these treatments were on par with each other and with that of control. The conidial concentration per cm of M. anisopliae in spinosad amended media was highest and lowest in cartap hydrochloride. The conidial viability of M. anisopliae in spinosad, indoxacarb, novaluron and cartap hydrochloride treated media was 89.2, 84.6, 80.4 and 77.4 per cent, respectively. No significant difference in radial growth of M. anisopliae was found with tebuconazole, azoxystrobin and chlorothalonil, whereas total inhibition of radial growth was observed in propiconazole treated medium. Significant reduction of M. anisopliae conidial concentration per cm was recorded in tebuconazole and azoxystrobin treated media.
Metarhizium anisopliae, Spinosad, Indoxacarb, Novaluron, Cartap Hydrochloride, Tebuconazole, Azoxystrobin, Chlorothalonil, Propiconazole.
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