Potential of Entomopathogenic Fungi Isolated from Soils in Uttaradit Province for Controlling Diamondback Moth Larva

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มนัสนิตย์ บุญตัด
วีรเทพ พงษ์ประเสริฐ
ไสว บูรณพานิชพันธุ์
จิราพร กุลสาริน

Abstract

Diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), is a serious pest of cruciferae worldwide. Therefore, this study aims to find and screen the effectively entomopathogenic fungi to control diamondback moth from forest soil in Uttaradit province. The total of 36 soil samples from five districts was collected and brought back to the laboratory. Metarhizium anisopliae at the amount of 28 isolates was identified and coded the numbers and their sources. The efficacy of those was determined by dipping the 3rd instar larva of diamondback moth in each spore suspension of fungal isolate at the concentration of 108 conidia/ml. The experiment was based on a completely randomized design (CRD) with 3 replications. The result showed that four isolates of M. anisopliae; U-NM02, U-LM01, U-PM01 and U-NM05; were high efficacy to control diamondback moth larva with 100% mortality in 4 days after dipping and LT50 were 1.80, 2.08, 2.12 and 2.23 days, respectively.

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References

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