Corymbia spp. and Eucalyptus spp. essential oils have insecticidal activity against Plutella xylostella

Filomeno, Claudinei Andrade; Barbosa, Luiz C. A.; Teixeira, Róbson Ricardo; Pinheiro, Antônio Lelis; Farias, Elizeu S.; Silva, Eliete Meire de Paula; Picanço, Marcelo Coutinho

doi:10.1016/j.indcrop.2017.08.033

Cited by 60 publications

(35 citation statements)

References 69 publications

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“…Members of the genus reportedly have pinene- and -myrcene-rich terpeneoid volatiles 21,22 that have widely-reported repellent effects on arthropods 23 that are likely to be key to the effects observed on C. formicarius . Mulch of Eucalyptus albens was potent in laboratory and field tests and the members of this genus are known to produce volatile terpenes with activity against arthropod pests 24,25 . The sugarcane mulch tested in the present study was produced from leaves and tops rather than being the ‘bagasse’ by product of sugar processing.…”

Section: Discussionmentioning

confidence: 99%

Organic mulches reduce crop attack by sweetpotato weevil (Cylas formicarius)

Rehman

Liu

Johnson

et al. 2019

Sci Rep

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Mulching with organic materials is a management practice with long history for weed suppression, soil water conservation and erosion control. Its potential impact on crop pests is less well explored. Here we report its utility for reducing crop damage by the serious pest, sweetpotato weevil (Cylas formicarius). Laboratory bioassays measured the response of adult female weevils to sweetpotato storage roots beneath mulches of fresh or dried plant materials. Weevils were significant repelled by fresh basil, catnip, basil lime and dry eucalyptus, cypress, lucerne and sugarcane. A subsequent field study found that mulches of dry cypress, eucalyptus and lucerne reduced movement of weevils from a release point to reach sweetpotato plants and lowered level of damage to storage roots. Results demonstrate that mulching with organic materials merits further testing as part of the integrated management of sweetpotato weevil, particularly to protect developing storage roots during dry periods when soil cracking can facilitate access by pests.

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Section: Discussionmentioning

confidence: 99%

Organic mulches reduce crop attack by sweetpotato weevil (Cylas formicarius)

Rehman

Liu

Johnson

et al. 2019

Sci Rep

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“…According to MELO et al (2018) the EO of L. gracilis was not selective for the bee Apis mellifera Linnaeus, 1758 (Hymenoptera: Apidae) and the predatory wasp Polybia micans Ducke, 1904 (Hymenoptera: Vespidae). The EO of C. citriodora may present negative effects on pollinators (FILOMENO et al, 2017), which is harmful for Tetragonisca angustula Latreille (Hymenoptera: Apidae); however, it is harmless to Solenopsis saevissima Smith (Hymenoptera: Formicidae) (RIBEIRO et al, 2018). Therefore, for its use, there are some precautions, such as avoiding applications in the period of the most pollinator activity, such as during the hottest hours of the day (de BRUIJN; SOMMEIJER, 1997).…”

Section: Discussionmentioning

confidence: 99%

Insecticidal activity of essential oils in controlling fall armyworm, Spodoptera frugiperda

et al. 2019

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Fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) is one of the main pests in maize crop with developing resistance to chemical products and Bt technology. Therefore, alternative control methods such as essential oils are important steps in the implementation management strategies for this pest. This study aimed to evaluate the efficiency of essential oils (EOs) of Corymbia citriodora, Myrciaria dubia (Myrtaceae), Lippia microphylla (Verbenaceae) and Piper umbelattum (Piperaceae) in controlling S. frugiperda. The OEs were extracted and mortality tests were conducted with topic and volatile applications, in 30 second-instar caterpillars originated from insect rearing and artificial diet. As a control, we conducted tests with distilled water and acetone. EOs that provided mortality rates above 80% were submitted to chemical analysis for constituent identification. The efficient EOs were only those of C. citriodora and L. microphylla. For EO of C. citriodora, the LD80 was 7.06 ± 0.73 mg.g -1 in topical application and 5.85 ± 0.75 μL via volatile application. On the other hand, for EO of L. microphylla, DL80 was 9.95 ± 1.25 mg.g -1 in topical application and 18.56 ± 3.55 μL via volatile application. Chemical analysis showed that the main constituents were citronella for the EO of C. citriodora and (E)-caryophyllene and (E)-nerolidol to the EO of L. microphylla. EOs of C. citriodora and L. microphylla are promising for controlling S. frugiperda, with emphasis on the volatile effect of C. citriodora oil.

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“…EOs repellence [ 17 , 18 ], larvicidal [ 19 , 20 , 21 ], and insecticidal activities are proven on different arthropod pests of economic importance [ 22 , 23 , 24 , 25 ]. Among them, the EOs’ efficacy has also been investigated on some Lepidoptera.…”

Section: Introductionmentioning

confidence: 99%

Developing a Highly Stable Carlina acaulis Essential Oil Nanoemulsion for Managing Lobesia botrana

et al. 2020

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The growing interest in the development of green pest management strategies is leading to the exploitation of essential oils (EOs) as promising botanical pesticides. In this respect, nanotechnology could efficiently support the use of EOs through their encapsulation into stable nanoformulations, such as nanoemulsions (NEs), to improve their stability and efficacy. This technology assures the improvement of the chemical stability, hydrophilicity, and environmental persistence of EOs, giving an added value for the fabrication of natural insecticides effective against a wide spectrum of insect vectors and pests of public and agronomical importance. Carlina acaulis (Asteraceae) root EO has been recently proposed as a promising ingredient of a new generation of botanical insecticides. In the present study, a highly stable C. acaulis-based NE was developed. Interestingly, such a nanosystem was able to encapsulate 6% (w/w) of C. acaulis EO, showing a mean diameter of around 140 nm and a SOR (surfactant-to-oil ratio) of 0.6. Its stability was evaluated in a storage period of six months and corroborated by an accelerated stability study. Therefore, the C. acaulis EO and C. acaulis-based NE were evaluated for their toxicity against 1st instar larvae of the European grapevine moth (EGVM), Lobesia botrana (Denis & Schiffermüller, 1775) (Lepidoptera: Tortricidae), a major vineyard pest. The chemical composition of C. acaulis EO was investigated by gas chromatography–mass spectrometry (GC–MS) revealing carlina oxide, a polyacetylene, as the main constituent. In toxicity assays, both the C. acaulis EO and the C. acaulis-based NE were highly toxic to L. botrana larvae, with LC50 values of 7.299 and 9.044 µL/mL for C. acaulis EO and NE, respectively. The C. acaulis-based NE represents a promising option to develop highly stable botanical insecticides for pest management. To date, this study represents the first evidence about the insecticidal toxicity of EOs and EO-based NEs against this major grapevine pest.

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Corymbia spp. and Eucalyptus spp. essential oils have insecticidal activity against Plutella xylostella

Cited by 60 publications

References 69 publications

Organic mulches reduce crop attack by sweetpotato weevil (Cylas formicarius)

Organic mulches reduce crop attack by sweetpotato weevil (Cylas formicarius)

Insecticidal activity of essential oils in controlling fall armyworm, Spodoptera frugiperda

Developing a Highly Stable Carlina acaulis Essential Oil Nanoemulsion for Managing Lobesia botrana

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