Laboratory evaluation of toxic and repellent properties of the pithraj tree,<i>Aphanamixis polystachya</i>Wall &amp; Parker, against<i>Sitophilus oryzae</i>(L.)

Talukder, F. A.; Howse, P. E.

doi:10.1080/09670879409371897

Cited by 58 publications

(36 citation statements)

References 4 publications

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“…They do not affect plant growth, seed viability and food quality but possess insecticidal, repellent, antifeedant and/or growth regulatory activities. Botanical pesticides tend to have broad-spectrum activity, are relatively specific in their mode of action, easy to process, produce, use and safe for higher animals and the environment (Talukder and Howse, 1994). Plants are endowed with a potential to produce a range of secondary metabolites like alkaloids, terpenoids, flavonoids, phenols, glycosides, sitosterols and tannins.…”

Section: Introductionmentioning

confidence: 99%

Bioefficacy of Couroupita guianensis (Aubl) against Helicoverpa armigera (Hub.) (Lepidoptera: Noctuidae) larvae

Baskar¹,

Maheswaran²,

Kingsley³

et al. 2010

Span. j. agric. res.

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With a view to develop an ecofriendly botanical pesticide, we evaluated the bioeff icacy of crude extracts of Couroupita guianensis against third instar larvae of Helicoverpa armigera. Maximum feeding deterrency (81.67%) and least LC 50 (2.72%) for larval mortality were seen in hexane extract. Hexane extract was subjected to column chromatography using different ratio of hexane-ethyl acetate solvent system. Totally eight fractions were collected. The fractions were screened at 125, 250, 500 and 1,000 mg kg -1 concentrations against H. armigera using no-choice leaf disc method. Fraction eight showed maximum antifeedant (86.24%) and larvicidal (80.88%) activities at 1,000 mg kg -1 concentration. C. guianensis could be utilized in pest control programme. Additional key words: antifeedant, hexane, larvicidal, phytochemicals. ResumenEficacia de Couroupita guianensis (Aubl) frente a larvas de Helicoverpa armiguera (Hub.) (Lepidoptera: Noctuidae) Con el fin de desarrollar un plaguicida ecológico de origen vegetal, se evaluó la eficacia de extractos crudos de Couroupita guianensis frente a larvas de tercer estadio de Helicoverpa armígera. En el extracto de hexano se observó la máxima actividad disuasoria de la alimentación (81,67%) y la menor LC 50 (2,72%) respecto a la mortalidad de las larvas. Se sometió el extracto de hexano a cromatografía en columna, utilizando diferentes proporciones del sistema disolvente hexano-acetato de etilo para eluir ocho fracciones. Las fracciones se evaluaron en concentraciones de 125, 250, 500 y 1.000 mg kg -1 frente a H. armígera, mediante ensayos de no preferencia con discos foliares. La fracción octava mostró la máxima actividad antialimentaria (86,24%) y larvicida (80,88%) a 1.000 mg kg -1 . C. guianensis se podría utilizar por tanto en programas de control de plagas.Palabras clave adicionales: actividad antialimentaria, actividad larvicida, fitoquímicos, hexano.

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Section: Introductionmentioning

confidence: 99%

Bioefficacy of Couroupita guianensis (Aubl) against Helicoverpa armigera (Hub.) (Lepidoptera: Noctuidae) larvae

Baskar¹,

Maheswaran²,

Kingsley³

et al. 2010

Span. j. agric. res.

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“…Spodoptera litura Fabricius is a polyphagous pest. It also attacks more than 100 crops (Talukder and Howse 1994). Both H. armigera and S. litura have developed resistance against synthetic pesticides (Kumar and Reghupathy 2001;Ramasubramaniam and Regupathy 2004).…”

Section: Introductionmentioning

confidence: 99%

Bioefficacy of flindersine against Helicoverpa armigera Hübner, Spodoptera litura Fabricius, Anopheles stephensis Liston. and Culex quinquefasciatus Say.

Duraipandiyan

Baskar²,

Muthu³

et al. 2015

Braz. arch. biol. technol.

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“…The LT50 for S. oryzae and T. castaneum adults at 2.0 mL/kg (in food media) and 5.1 mL/m 2 (on filter paper) of neem oil nanoemulsion, and the controls, was evaluated using the same bioassays, food impregnation method (Talukder & Howse, 1994) and filter paper impregnation method (Hameed et al, 2012), with five replicates. The treatments were checked every 2-3 h to record the number of dead adults.…”

Section: Lt50 Determinationmentioning

confidence: 99%

“…The toxicity of the formulated neem oil nanoemulsions against the adults of tested insect species was studied using food impregnation method according to Talukder & Howse (1994) with some modifications in March 2015. The nanoemulsion formulations were diluted to four azadirachtin concentrations (5.0, 6.0, 7.5 and 10.0 mL/kg).…”

Section: Toxicity Of the Neem Oil Nanoemulsions Using Food Impregnatimentioning

confidence: 99%

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

Choupanian¹,

Omar²

2018

Turkish Journal of Entomology

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Laboratory evaluation of toxic and repellent properties of the pithraj tree,Aphanamixis polystachyaWall & Parker, againstSitophilus oryzae(L.)

Cited by 58 publications

References 4 publications

Bioefficacy of Couroupita guianensis (Aubl) against Helicoverpa armigera (Hub.) (Lepidoptera: Noctuidae) larvae

Bioefficacy of Couroupita guianensis (Aubl) against Helicoverpa armigera (Hub.) (Lepidoptera: Noctuidae) larvae

Bioefficacy of flindersine against Helicoverpa armigera Hübner, Spodoptera litura Fabricius, Anopheles stephensis Liston. and Culex quinquefasciatus Say.

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

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