Effect of Crude Plant Extracts on Mushroom Mite,Luciaphorussp. (Acari: Pygmephoridae)

摘要

The use of plant extracts for controlling agricultural pests has become increasingly popular in the recent years. Mushroom mite,Luciaphorussp., is a destructive pest of several mushroom species and has been reported to cause severe loss of mushroom cultivation in many settings. The efficacies of 23 rhizome and leaf extracts were evaluated against female adults ofLuciaphorussp. At 3 days after treatment, the rhizome extracts derived fromCurcuma xanthorrhizaRoxb. andZingiber montanum(Koenig) Link ex Dietr. were found to have very strong acaricidal activities, resulting in 100% mite mortality, followed byCurcuma longaLinn. (98.89%),Zingiber zerumbet(L.) Smith. (97.78%),Kaempferia parvifloraWall. Ex Baker (88.89%), andZingiber officinaleRoscoe. (84.44%). The leaf extracts ofOcimum sanctumLinn. andMelissa officinalisL. also resulted in 100% mite mortality 3 days after treatment, while the other leaf extracts induced mite mortality only below 70%. The results suggested that rhizome extracts ofC. xanthorrhizaandZ. montanumand leaf extracts ofO. sanctumandM. officinalishave a great potential for future development as natural acaricides for controllingLuciaphorussp.