Activité Acaricide Des Huiles Essentielles Du Mentha Pulegium, Origanum Compactum Et Thymus Capitatus Sur L’acarien Phytophage Tetranychus Urticae Koch (Acari : Tetranychidae)

Abstract

The use of botanical acaricides extracted from plants as an alternative to replace the chemical acaricides is an interesting and efficient option to control pests and ameliorate their toxic effects to humans and the environment. The aim of this work was to evaluate the contact toxicity of Pennyroyal mint (Mentha pulegium), oregano (Origanum compactum) and thyme (Thymus capitatus) essential oils against adults, larvae and eggs of two-spotted spider mite Tetranychus urticae Koch (Tetranychidae). The chemical composition of these three plant essential oils was also characterized. Laboratory tests were conducted to determine the acaricidal effect of plant essential oils at several doses in geometric progression. The consequences of treatments on mortality were measured in relationships with concentrations of essential oils. On the other hand, the major constituents of the three essential oils were identified by gas chromatography-mass spectrometer (GC-MS) techniques. GC-MS analyses proved that the major compound present in the essential oils of thyme and oregano is carvacrol (55.59 and 55.28% respectively) while the main component of pennyroyal mint essential oil is pulegone (67,63%). Laboratory bioassay results indicated that essential oils of thyme and pennyroyal mint caused the most important acaricidal effects in comparison with the essential oil of oregano. At a concentration of 1%, thyme and pennyroyal eradicate all adults of the mite while oregano causes a mortality of European Scientific Journal January 2018 edition Vol.14, No.3 ISSN: 1857 -7881 (Print) e -ISSN 1857-7431 119 84.99%. On larvae, the mortality rate of thyme, pennyroyal and oregano is 97.7; 89.47 and 57.89% respectively. The results of the present study concluded that plant essential oils could be useful in promoting research aiming at the development of new agent for pest control from the plants with medicinal values.Keywords: Tetranychus urticae-Mentha pulegium-Origanum compactumThymus capitatus-essential oils RésuméL'usage d'acaricides botaniques extraits à partir des plantes comme alternatives aux acaricides chimiques est une option intéressante et efficace pour contrôler les ravageurs et améliorer leurs effets toxiques sur les humains et l'environnement. L'objectif de ce travail est d'évaluer la toxicité par contact des huiles essentielles de la menthe pouliot (Mentha pulegium), de l'origan (Origanum compactum) et du thym (Thymus capitatus) sur les adultes, les larves et les oeufs de l'acarien à 2 points Tetranychus urticae Koch (Tetranychidae). La composition chimique des huiles essentielles de ces trois plantes a aussi été caractérisée. Les tests de laboratoire sont conduits pour déterminer l'effet acaricide des huiles essentielles à plusieurs doses en progression géométrique. Les conséquences des traitements sont évaluées en fonction des concentrations des huiles essentielles. D'autre part, les constituants majeurs des trois huiles essentielles sont identifiés par chromatographie en phase gazeuse couplée à la spectrométrie de mas...

Chemical Composition and Insecticidal Activity of Thymus algeriensis Boiss and Reut. Essential Oil against Aphis fabae Scopoli1763

“…These results are consistent with those reported in the literature (Kouache et al, 2017 andAissaoui et al, 2018). W ith respect to the factor treatment dose, there is a significant difference (p<0.05) between the three lots.…”

“…It is in this context that this work fits, which aims to study the effect of extracted essential oils, known for their insecticidal properties (Mersha et al, 2014;Hridayesh et al, 2014;Shiwakoti et al, 2016;Song et al, 2016;Karahacane and kaci, 2021), rich in carvacrol (Popović et al, 2013 andAissaoui et al, 2018).…”

The Essential Oils Compounds of Lippia multiflora Moldenke and Cymbopogon schoenanthus (L.) Spreng Repel and Affect the Survival of the Maize Pest Spodoptera frugiperda (Lepidoptera: Noctuidae) Larvae

“…New compounds, previously absent in EO, appear in the combination including β-thujene, α-pinene, Cis-sabinene, piperitol, isopiperitone, carvacrol, thymol acetate, (E)β-famesene, β-elemol, 10 -epi-c-eudesmol, and 10-epiβ-eudesmol probably due to components interaction. Te diferences in EO composition and yield of these two plants would be linked to intrinsic factors (subspecies, age, and organ) or extrinsic factors (climate, growing conditions, or extraction methods) [44,45].…”

Synergistic interplay between arbuscular mycorrhizal fungi and fern manure compost tea suppresses common tomato phytopathogens and pest attacks on-farm

“…The synergistic interplay between AMF and FM compost tea might have both together directly suppressed phytopathogens and pests through their multifunctional properties, meaning via direct contact of plant-based biopesticide extracts associated with the ability of AMF to rapidly pre-colonize the roots (Veresoglou and Rillig, 2012;Pane et al, 2016;Mala et al, 2019). The indirect effects include biostimulation of tomato plants by the combined application of AMF and FM compost tea acting as bio-effectors to promote tomato plant vigor and systemic resistance mechanisms (Cissokho et al, 2015;Pane et al, 2016;Asmae et al, 2018;Dey and Ghosh, 2022). These findings are supported by PCA, revealing distinct and complementary effects of AMF and FM compost tea on the intricate dynamics of tomato plant diseases and AMF symbiosis (Figure 9).…”

“…Plant-derived substances, such as essential oils and compost tea, have been demonstrated to have multifaceted biopesticidal properties with notable effectiveness in pathogen and pest suppression (Konéet al, 2010;On et al, 2015;Campanelli et al, 2018;Simo et al, 2019). Previous studies have highlighted the insecticidal, insect repellent, and acaricidal potentials of plant-derived oils on vegetable crops (Camara, 2009;Mostafa et al, 2014;Kanko et al, 2017;Asmae et al, 2018;Simo et al, 2019). Fermented plant extracts, also called compost tea, are plant-based preparations to treat plant pests and diseases or to increase the plant resistance against predators by stimulating their defense system (Deravel et al, 2014).…”