Contact and Gastric Effect of Peppermint Oil on Selected Pests and Aphid Predator Harmonia axyridis Pallas

Gospodarek, J.; Krajewska, Agnieszka; Paśmionka, Iwona

doi:10.3390/molecules28124647

Cited by 1 publication

(12 citation statements)

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“…Noteworthy is the fact that wingless females proved to be a more sensitive stage to EOTO than nymphs. Previous studies on the effects of plant extracts (both EOs and aqueous extracts) on different aphid stages have shown both higher sensitivity of nymphs [53,54], no differences between the sensitivity of adult forms and nymphs [55], and, as in the present experiment, higher sensitivity of adult forms [50,56]. Higher sensitivity of wingless females than nymphs of A. fabae was recorded in studies using peppermint EO, but only at the initial time point of the experiment, i.e., between 0 and 30 h (0.5442% and 0.3768% after 6 h for nymphs and wingless females, respectively) [50].…”

Section: Black Bean Aphidsupporting

confidence: 71%

“…Previous studies on the effects of plant extracts (both EOs and aqueous extracts) on different aphid stages have shown both higher sensitivity of nymphs [53,54], no differences between the sensitivity of adult forms and nymphs [55], and, as in the present experiment, higher sensitivity of adult forms [50,56]. Higher sensitivity of wingless females than nymphs of A. fabae was recorded in studies using peppermint EO, but only at the initial time point of the experiment, i.e., between 0 and 30 h (0.5442% and 0.3768% after 6 h for nymphs and wingless females, respectively) [50]. Later-after 54 h-both LC 50 values were similar (0.2705% and 0.2807% for nymphs and wingless females, respectively) and corresponded to the LC 50 calculated for wingless females in the present experiment.…”

Section: Black Bean Aphidsupporting

confidence: 71%

“…There is no available information on the effect of EO from T. occidentalis, as well as from other plants of the Cupressaceae family, on L. decemlineata. Results using other EOs indicate that CPB is significantly resistant to EOs [50,59] and that adult forms of CPB are more resistant than larval forms [60]. M. piperita EO caused mortality in L2 CPB larvae with LC 50 values of 0.3449% and 0.2020% after 2 and 3 days of the experiment, respectively, while for older larvae (L4) the LC 50 value was 0.7289% after 96 h [50].…”

Section: Colorado Potato Beetlementioning

confidence: 94%

“…Results using other EOs indicate that CPB is significantly resistant to EOs [50,59] and that adult forms of CPB are more resistant than larval forms [60]. M. piperita EO caused mortality in L2 CPB larvae with LC 50 values of 0.3449% and 0.2020% after 2 and 3 days of the experiment, respectively, while for older larvae (L4) the LC 50 value was 0.7289% after 96 h [50]. In the present research, LC 50 values for females were 1.5327% and 1.3113% after 48 h and after 72 h of the experiment.…”

Section: Colorado Potato Beetlementioning

confidence: 99%

“…In addition, the widespread availability of plant material [9] and the high yield of EO obtained should be emphasized [16]. In comparison, the LC 50 calculated for nymphs and wingless females of the black bean aphid for peppermint Mentha piperita L. EO after 30 h was 0.3400% and 0.3375%, respectively [50]. The same oil used against Aphis punicae Passerini showed LC 50 after 24 h = 2.971 µg/mL [51], while being used as a nanoemulsion against a cotton aphid resulted in LC 50 of 3879.5 µL of active ingredient/L [52].…”

Section: Black Bean Aphidmentioning

confidence: 99%

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Potential of Thuja occidentalis L. Essential Oil and Water Extracts against Field Crop Pests

Gospodarek,

Krajewska,

Paśmionka

et al. 2024

Molecules

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Thuja occidentalis L. essential oil (EOTO) and its compounds, such as terpinyl acetate, bornyl acetate, and β-thujone, are claimed to be highly effective against some storage pests, sanitary insects, or pests of fruit trees, while data about its use in protecting field crops are very scarce. There is also a lack of information in the literature about the insecticidal value of water extracts from T. occidentalis (WETOs). Both essential oils (EOs) and water extracts (WEs) from various plants have advantages and disadvantages in terms of their use as insecticides. EOs are generally more effective, but their preparation is more complicated and quite expensive. In turn, WEs are simple to prepare and cheap, but they often have limited effectiveness. Moreover, significant differences in responses exist depending on the species of the donor plant, the method of preparing the extract, its concentration, the species of the pest being controlled, the developmental stage, and even the gender of the pest. The goals of the research were to assess the effect of EOTO and WETOs prepared from dry and fresh matter on the mortality, feeding, and body mass changes of important crop pests, i.e., the black bean aphid, pea leaf weevil, and Colorado potato beetle (CPB), respectively, as well as on the mortality and voracity of non-target organism Asian lady beetle young larvae. EOTO showed significant aphicidal activity with LC50 = 0.8267% and 0.2453% after 42 h of the experiment for nymphs and wingless females of black bean aphid, respectively. Adults of CPB were more resistant to EOTO than aphids, with LC50 values for females equal to 1.5327% and 1.3113% after 48 h and after 72 h of the experiment. There was no significant effect of EOTO on CPB foraging. Calculated LC50 values for pea leaf weevil adults were lower than those for CPB (0.9638% and 0.8573% for males after 12 h and 24 h, respectively). In the case of this pest, a clear reduction in foraging was obtained, with higher concentrations of EOTO resulting in more pronounced reductions in foraging behavior. Concentrations of EOTO above 0.5%, which showed efficacy against the aphid, were lethal to 3-day-old larvae of the Asian lady beetle. WETOs, in turn, showed significant potential in inhibiting adult pea leaf weevil feeding, with very low or no effectiveness in reducing A. fabae and CPB, respectively.

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