Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson
The bioactivity of the aqueous extracts of the leaf and stem bark of the medicinal plant, Alstonia boonei De Wild (Apocyanaceae), against the pink stalk borer, Sesamia calamistis Hampson (Lepidoptera: Noctuidae) was studied in a laboratory bioassay. The extracts were incorporated into artificial diet at a rate of 0.0% (control), 1.0%, 2.5%, 5.0%, and 10.0% (w/w). Both extracts significantly (P<0.01) reduced larval survival and weight in a dose dependent manner. The concentrations that killed 50% of the larvae (LC50) for the stem bark extract were 2.8% and 2.1% at 10 and 20 DAI (days after introduction), respectively, while those for the leaves extract were 5.6% and 3.5%. The weights of the larvae also varied significantly (P<0.05) between the treatments in a dose dependent manner. We conclude that both leaf and stem bark extracts of A. boonei are toxic, used as growth inhibitors to S. calamistis larvae, and hold good promise for use as alternative crop protectants against S. calamistis.
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Format: | Journal Article biblioteca |
Language: | English |
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2007-09
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Subjects: | extracts, sesamia calamistis, toxicity, growth inhibitors, hampson, medicinal plant, insecticidal, |
Online Access: | https://hdl.handle.net/10568/92396 |
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dig-cgspace-10568-923962023-02-15T06:47:44Z Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson Oigiangbe, O.N. Igbinosa, I.B. Tamo, Manuele extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal The bioactivity of the aqueous extracts of the leaf and stem bark of the medicinal plant, Alstonia boonei De Wild (Apocyanaceae), against the pink stalk borer, Sesamia calamistis Hampson (Lepidoptera: Noctuidae) was studied in a laboratory bioassay. The extracts were incorporated into artificial diet at a rate of 0.0% (control), 1.0%, 2.5%, 5.0%, and 10.0% (w/w). Both extracts significantly (P<0.01) reduced larval survival and weight in a dose dependent manner. The concentrations that killed 50% of the larvae (LC50) for the stem bark extract were 2.8% and 2.1% at 10 and 20 DAI (days after introduction), respectively, while those for the leaves extract were 5.6% and 3.5%. The weights of the larvae also varied significantly (P<0.05) between the treatments in a dose dependent manner. We conclude that both leaf and stem bark extracts of A. boonei are toxic, used as growth inhibitors to S. calamistis larvae, and hold good promise for use as alternative crop protectants against S. calamistis. 2007-09 2018-04-26T14:44:05Z 2018-04-26T14:44:05Z Journal Article Oigiangbe, O.N., Igbinosa, I.B. & Tamo, M. (2007). Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson. Journal of Zhejiang University-Science B, 8(10), 752-755. 1673-1581 https://hdl.handle.net/10568/92396 en Limited Access 752-755 Journal of Zhejiang University - Science B |
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extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal |
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extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal Oigiangbe, O.N. Igbinosa, I.B. Tamo, Manuele Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
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The bioactivity of the aqueous extracts of the leaf and stem bark of the medicinal plant, Alstonia boonei De Wild (Apocyanaceae), against the pink stalk borer, Sesamia calamistis Hampson (Lepidoptera: Noctuidae) was studied in a laboratory bioassay. The extracts were incorporated into artificial diet at a rate of 0.0% (control), 1.0%, 2.5%, 5.0%, and 10.0% (w/w). Both extracts significantly (P<0.01) reduced larval survival and weight in a dose dependent manner. The concentrations that killed 50% of the larvae (LC50) for the stem bark extract were 2.8% and 2.1% at 10 and 20 DAI (days after introduction), respectively, while those for the leaves extract were 5.6% and 3.5%. The weights of the larvae also varied significantly (P<0.05) between the treatments in a dose dependent manner. We conclude that both leaf and stem bark extracts of A. boonei are toxic, used as growth inhibitors to S. calamistis larvae, and hold good promise for use as alternative crop protectants against S. calamistis. |
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Journal Article |
topic_facet |
extracts sesamia calamistis toxicity growth inhibitors hampson medicinal plant insecticidal |
author |
Oigiangbe, O.N. Igbinosa, I.B. Tamo, Manuele |
author_facet |
Oigiangbe, O.N. Igbinosa, I.B. Tamo, Manuele |
author_sort |
Oigiangbe, O.N. |
title |
Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
title_short |
Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
title_full |
Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
title_fullStr |
Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
title_full_unstemmed |
Insecticidal activity of the medicinal plant, Alstonia boonei De Wild, against Sesamia calamistis Hampson |
title_sort |
insecticidal activity of the medicinal plant, alstonia boonei de wild, against sesamia calamistis hampson |
publishDate |
2007-09 |
url |
https://hdl.handle.net/10568/92396 |
work_keys_str_mv |
AT oigiangbeon insecticidalactivityofthemedicinalplantalstoniabooneidewildagainstsesamiacalamistishampson AT igbinosaib insecticidalactivityofthemedicinalplantalstoniabooneidewildagainstsesamiacalamistishampson AT tamomanuele insecticidalactivityofthemedicinalplantalstoniabooneidewildagainstsesamiacalamistishampson |
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