Atividade inseticida do óleo de mamona sobre Diaphania nitidalis (Stoll) (Lepidoptera: Pyralidae)

Lima, Victor Luiz de Souza; Celestino, Flávio Neves; Pratissoli, Dirceu; Dalvi, Leandro Pin; Carvalho, José Romário de; Paes, João Paulo Pereira

doi:10.5039/agraria.v10i3a3573

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Castor oil contributed to the covering of the spiracles of Diaphania nitidalis caterpillars on pumpkin leaves treated with this oil, causing asphyxiation and consequently the death of the caterpillars (Lima et al, 2015). Some researchers have reported insect asphyxiation due to the blockage of spiracles as the main mode of action of mineral oils and, in some cases, as in the present research, of vegetable oils (Stadler and Buteler, 2009;Egwurube et al, 2010;Buteler and Stadler, 2011).…”

Section: Treatmentssupporting

confidence: 58%

Insecticidal activity of essential oils on Spodoptera frugiperda and selectivity to Euborellia annulipes

et al. 2024

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Fall armyworm (Spodoptera frugiperda) is the main species that causes damage to the maize crop in Brazil. In the perspective of studying alternatives of control of this pest that preserve the natural enemies, the aim of this research was to evaluate the insecticidal efficiency of the essential oils of Vanillosmopsis arborea and Lippia microphylla on S. frugiperda and verify the selectivity to the predator Euborellia annulipes. The bioassays were carried out in the Agricultural Entomology Laboratory of the Federal University of Paraiba, using insects, from 3rd instar of S. frugiperda and E. annulipes, originating from mass rearing in the laboratory itself. Dilutions of the oils were performed in Tween® 80 at concentrations of 0, 100, 150 and 200 mg mL-1. 1.0 μL from each dilution was applied to the prothoracic region of the insects. The S. frugiperda mortality was verified by topical contact of V. arborea oil with LC10 = 74.3 mg mL-1 and LC50 = 172.86 mg mL-1, for L. microphyla, LC10 = 51.26 mg mL-1 and LC50 = 104.52 mg mL-1. The observed lethal concentrations for E. annulipes were V. arborea LC10 = 71.3 mg mL-1 and LC50 = 160.2 mg mL-1. While L. microphyla, were LC10 = 50.3 mg mL-1 and LC50 = 134.67 mg mL-1. The essential oils of V. arborea and L. microphylla are efficient in the control of S. frugiperda, but are not selective to the predator E. Annulipes.

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Section: Treatmentssupporting

confidence: 58%

Insecticidal activity of essential oils on Spodoptera frugiperda and selectivity to Euborellia annulipes

et al. 2024

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“…Castor bean, Ricinus communis L. (Euphorbiaceae), is an important non-edible oilseed crop of value to the manufacturing industry [22], and its oil contains many bioactive compounds with a wide range of pharmaceutical properties [23]. Castor oil exhibits direct toxicity to the pickleworm, Diaphania nitidalis (Stoll) (Lepidoptera: Crambidae) [24], the diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae) [25], and also inhibits reproduction in the cattle tick, Rhipicephalus microplus [26]. Volatiles from flowering R. communis plants are repellent to the whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) [27], and leaf extracts have shown insecticidal and oviposition deterrent activity against the bruchid beetle Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) [28] and toxicity to the yellow sugarcane aphid, Sipha flava (Forbes) (Hemiptera: Aphididae) [29].…”

Section: Introductionmentioning

confidence: 99%

Intercropping Okra and Castor Bean Reduces Recruitment of Oriental Fruit Moth, Grapholita molesta (Lepidoptera: Tortricidae) in a Pear Orchard

Li,

Yu,

et al. 2023

Insects

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Intercrops can lower pest densities by increasing plant diversity, altering chemical communication in the arthropod community, and integrating well with other IPM tactics. We used two years of field observations and Y-tube olfactometer assays to explore the effects of intercropping a pear orchard with okra and castor bean on the cosmopolitan fruit-boring pest Grapholita molesta (Lepidoptera: Tortricidae). Intercropping okra reduced G. molesta trap catches in the pear orchard in both years, and intercropping with castor bean reduced them in the second year. Hydrocarbons, phenols, and ketones predominated in the GC-MS assay of okra volatiles, whereas castor bean volatiles were rich in aldehydes, ketones, and esters. Five of the commercially available volatiles released by these plants exhibited repellency to G. molesta in olfactometer trials, especially cinnamaldehyde, dibutyl phthalate, and thymol; the former compound also exhibited attraction to the egg parasitoid Trichogamma dendrolimi (Hymenoptera: Trichogrammatidae). In addition to their repellent properties, okra and castor bean may enhance integrated control of G. molesta in orchards by hosting prey that support populations of generalist predators that either provide biological pest control services within the orchard ecosystem or generate non-consumptive effects that contribute to pest deterence. Among the plant volatiles evaluated, cinnamaldehyde has the best potential for deployment in orchards to repel G. molesta without disrupting augmentative releases of T. dendrolimi.

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Atividade inseticida do óleo de mamona sobre Diaphania nitidalis (Stoll) (Lepidoptera: Pyralidae)

Cited by 2 publications

References 7 publications

Insecticidal activity of essential oils on Spodoptera frugiperda and selectivity to Euborellia annulipes

Insecticidal activity of essential oils on Spodoptera frugiperda and selectivity to Euborellia annulipes

Intercropping Okra and Castor Bean Reduces Recruitment of Oriental Fruit Moth, Grapholita molesta (Lepidoptera: Tortricidae) in a Pear Orchard

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