Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria
New sources of botanical pesticides in the management of Sitotroga cerealella (Olivier) infesting rice grains are indispensable in farmers’ quest towards achieving maximum protection of their rice produce. In this study, the efficacy of root and stem bark of Cleistopholis patens as an insecticidal a...
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| Format: | Article |
| Language: | English |
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University of Tarbiat Modares
2016-03-01
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| Series: | Journal of Crop Protection |
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| Online Access: | http://jcp.modares.ac.ir/article-3-7621-en.html |
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| author | Joseph Onaolapo Akinneye Emmanuel Ayobami Oyeniyi |
| author_facet | Joseph Onaolapo Akinneye Emmanuel Ayobami Oyeniyi |
| author_sort | Joseph Onaolapo Akinneye |
| collection | DOAJ |
| description | New sources of botanical pesticides in the management of Sitotroga cerealella (Olivier) infesting rice grains are indispensable in farmers’ quest towards achieving maximum protection of their rice produce. In this study, the efficacy of root and stem bark of Cleistopholis patens as an insecticidal agent against S. cerealella was investigated at 28 ± 2 ºC and 75 ± 6% relative humidity. Moths were exposed to contact and fumigant toxicity test at 0.5-2.5 g/20 g of paddy rice and mortality was assessed at 24, 48, 72 and 96 hours post-treatment respectively. Generally, moth exposed to root powders of C. patens showed higher mortality values (contact: 10 - 93%; fumigant: 13 - 100%) than their counterpart exposed to stem powder (contact: 6.67 - 78%; fumigant: 10 - 95%). Also, lethal doses (LD50 and LD95) revealed that lower doses of C. patens root powder resulted in higher mortality of S. cerealella when compared to that of stem powder. The only exception was observed in LD95 values of stem (6.54 g / 20 g of paddy rice) and root (6.76 g / 20 g of paddy rice) powder of fumigant toxicity test. Both powders of C. patens also significantly reduced adult emergence in treated grains when compared to control. This study showed that powders of stem and root bark of C. patens would provide a much desired wherewithal to synthetic insecticides in the management of S. cerealella infesting rice grains in Nigeria. |
| first_indexed | 2024-04-12T17:43:39Z |
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| id | doaj.art-982381f6895b4163acacbda937c09b24 |
| institution | Directory Open Access Journal |
| issn | 2251-9041 2251-905X |
| language | English |
| last_indexed | 2024-04-12T17:43:39Z |
| publishDate | 2016-03-01 |
| publisher | University of Tarbiat Modares |
| record_format | Article |
| series | Journal of Crop Protection |
| spelling | doaj.art-982381f6895b4163acacbda937c09b242022-12-22T03:22:44ZengUniversity of Tarbiat ModaresJournal of Crop Protection2251-90412251-905X2016-03-0151110Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in NigeriaJoseph Onaolapo Akinneye0Emmanuel Ayobami Oyeniyi1 Department of Biology, Federal University of Technology, P. M. B. 704, Akure, Ondo State, Nigeria. Department of Biology, Federal University of Technology, P. M. B. 704, Akure, Ondo State, Nigeria. New sources of botanical pesticides in the management of Sitotroga cerealella (Olivier) infesting rice grains are indispensable in farmers’ quest towards achieving maximum protection of their rice produce. In this study, the efficacy of root and stem bark of Cleistopholis patens as an insecticidal agent against S. cerealella was investigated at 28 ± 2 ºC and 75 ± 6% relative humidity. Moths were exposed to contact and fumigant toxicity test at 0.5-2.5 g/20 g of paddy rice and mortality was assessed at 24, 48, 72 and 96 hours post-treatment respectively. Generally, moth exposed to root powders of C. patens showed higher mortality values (contact: 10 - 93%; fumigant: 13 - 100%) than their counterpart exposed to stem powder (contact: 6.67 - 78%; fumigant: 10 - 95%). Also, lethal doses (LD50 and LD95) revealed that lower doses of C. patens root powder resulted in higher mortality of S. cerealella when compared to that of stem powder. The only exception was observed in LD95 values of stem (6.54 g / 20 g of paddy rice) and root (6.76 g / 20 g of paddy rice) powder of fumigant toxicity test. Both powders of C. patens also significantly reduced adult emergence in treated grains when compared to control. This study showed that powders of stem and root bark of C. patens would provide a much desired wherewithal to synthetic insecticides in the management of S. cerealella infesting rice grains in Nigeria.http://jcp.modares.ac.ir/article-3-7621-en.htmlsitotroga cerealellainsecticidal efficacycleistopholis patenstoxicityfumigant |
| spellingShingle | Joseph Onaolapo Akinneye Emmanuel Ayobami Oyeniyi Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria Journal of Crop Protection sitotroga cerealella insecticidal efficacy cleistopholis patens toxicity fumigant |
| title | Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria |
| title_full | Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria |
| title_fullStr | Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria |
| title_full_unstemmed | Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria |
| title_short | Insecticidal efficacy of Cleistopholis patens (Benth) against Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) infesting rice grains in Nigeria |
| title_sort | insecticidal efficacy of cleistopholis patens benth against sitotroga cerealella olivier lepidoptera gelechiidae infesting rice grains in nigeria |
| topic | sitotroga cerealella insecticidal efficacy cleistopholis patens toxicity fumigant |
| url | http://jcp.modares.ac.ir/article-3-7621-en.html |
| work_keys_str_mv | AT josephonaolapoakinneye insecticidalefficacyofcleistopholispatensbenthagainstsitotrogacerealellaolivierlepidopteragelechiidaeinfestingricegrainsinnigeria AT emmanuelayobamioyeniyi insecticidalefficacyofcleistopholispatensbenthagainstsitotrogacerealellaolivierlepidopteragelechiidaeinfestingricegrainsinnigeria |