In Vitro Activity of Essential Oils from San Luis-Argentina Against Ascosphaera apis

AbstractChalkbrood is an invasive mycosis produced by Ascosphaera apisaffecting exclusively the larvae growth of Apis melliferaL. There exists no pharmacological treatment and the chemical products used are not able to control the disease generating resistances and residues in the apicultural production. An ecological alternative is the use of essential oils as natural products to control this mycosis. Eight oils were screened against A. apisfor fungicidal activity. The oils of Baccharis coridifoliaand Eupatorium patensdid not possess any activity while the oils of Tessaria absinthioides, Aloysia gratissima, Heterotheca latifolia, Lippia juneliana, L. integrifoliaand L. turbinataexhibited varying levels of fungicidal activity.