Salvia officinalis essential oil in bean weevil control

Abstract

Bean weevil [Acanthoscelides obtectus Say (Coleoptera: Bruchidae)] is considered the main storage pest of the bean crop. Its control is performed mainly by chemical treatment, which has potential to cause resistance in pests, as well as environmental contamination. This study aimed at evaluating the insecticidal and repellent effect of Salvia officinalis L. essential oil against bean weevil. The doses used for the insecticidal test were: 0 L t-1, 0.5 L t-1, 1.0 L t-1, 1.5 L t-1, 2.5 L t-1 and 5.0 L t-1 of bean grains. For the mortality test, the experimental design was completely randomized, in a 6 × 7 (dose × time) factorial scheme, with five replications. The number of dead insects was counted at 2, 6, 12, 24, 48, 72 and 96 h after the insect introduction. The repellency test was conducted in arenas, under a completely randomized design, using the same doses applied to evaluate the insecticidal effect. Counts were performed 24 h after the introduction of insects. The insecticidal effect of the S. officinalis essential oil on A. obtectus resulted in mortality rates higher than 95 %, after 6 h of insect introduction, for all doses tested. Repellency effect was also detected for all doses tested.

Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus

“…Many studies on storage and other pest insects recorded significant influence of thyme EO on pest survival and behavior [ 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 ]. Lamiaceae EOs applied as fumigants have been extensively tested for the activity against A. obtectus [ 61 , 62 , 91 , 92 , 93 ] and several recent studies dealt with the effects of their application on bean seeds [ 63 , 67 , 71 ]. Here we evaluated efficacy of thymol chemotype of the thyme oil as residual contact insecticide and oviposition deterrent against A. obtectus .…”

“…Previous studies of EO effects in A. obtectus have involved EOs isolated from plants belonging to families of Amaranthaceae [58], Asteraceae [59], Cupressaceae [60], Lamiaceae [61][62][63], Lauraceae [64], Meliaceae [65], Myrtaceae [60,62,64,66], Piperaceae [65], Poaceae [67], Rutaceae [68]. In the present study we examined how thyme EO (Thymus vulgaris L., Lamiaceae, thymol chemotype) applied by contact affected A. obtectus mortality, F1 progeny production and choice of seeds for oviposition.…”

Application of Salvia Officinalis and Picea Abies Essential Oils for Controlling Colletotrichum SPP

“…However, higher concentrations could give higher inhibition. Scariot et al (2016) noticed that S. officinalis essential oil has antifungal activity against Alternaria spp. and Phakopsora pachyrhizi in beans.…”

Activity of Some Essential Oils as Adulticides for The Control of The Red Flour Beetle Adults, Tribolium castaneum (Herbst)

“…(Yoon and Tak, 2018) maintained that Linalyl acetate, the most abundant ingredient in sage oil, was the most responsible for its repellent action. Salvia officinalis has the greatest mortality and repellence rates against the bean weevil, Acanthoscelides obtectus (Scariot et al, 2016).…”