Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea
In search for botanicals as an alternative remedy to synthetic chemicals in the pest control of tea plantations, ferns such as Adiantum raddianum, Asplenium aethiopicum, Cyclosorus interruptus, Dicranopteris linearis, Diplazium polypodioides, and Pteridium aquilinum were evaluated against the two ma...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2017-12-01
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| Series: | Plant Protection Science |
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| Online Access: | https://pps.agriculturejournals.cz/artkey/pps-201704-0007_efficacy-of-certain-common-ferns-against-red-spider-mite-oligonychus-coffeae-and-tea-mosquito-bug-helopeltis-th.php |
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| author | Pandian Prabhakaran Balakrishnan Radhakrishnan Kodakkadal Kotian Srikumar Bastian Suresh Kumar |
| author_facet | Pandian Prabhakaran Balakrishnan Radhakrishnan Kodakkadal Kotian Srikumar Bastian Suresh Kumar |
| author_sort | Pandian Prabhakaran |
| collection | DOAJ |
| description | In search for botanicals as an alternative remedy to synthetic chemicals in the pest control of tea plantations, ferns such as Adiantum raddianum, Asplenium aethiopicum, Cyclosorus interruptus, Dicranopteris linearis, Diplazium polypodioides, and Pteridium aquilinum were evaluated against the two major pests of tea, red spider mite Oligonychus coffeae Nietner and tea mosquito bug Helopeltis theivora Waterhouse, which are the foremost seasonal pests in tea fields, causing severe crop loss. Apart from synthetic chemicals, only the neem kernel extract is recommended in tea fields. The aqueous extracts of ferns were screened at different concentrations against these pests under laboratory and field conditions. The extracts of P. aquilinum and D. linearis showed good contact toxicity at a 5% concentration to O. coffeae. The acaricidal activity was observed in the order P. aquilinum > D. linearis > C. interruptus > A. raddianum > D. polypodioides > A. aethiopicum. Under field conditions, the extract of D. linearis and P. aquilinum showed a 50% reduction in the population of red spider mite and caused no phytotoxic effect to tea leaves. But their insecticidal activity was less pronounced against H. theivora. They exhibit antifeedant activity, which was sustained only for 24 hours. The photochemical screening of extracts showed a qualitatively increased level of saponins in P. aquilinum, D. linearis, and C. interruptus. The study shows that the aqueous extracts of D. linearis and P. aquilinum can be incorporated in the mite control programme in tea. |
| first_indexed | 2024-04-10T08:15:19Z |
| format | Article |
| id | doaj.art-8f37601c71804ce79dc541d2c56380c2 |
| institution | Directory Open Access Journal |
| issn | 1212-2580 1805-9341 |
| language | English |
| last_indexed | 2024-04-10T08:15:19Z |
| publishDate | 2017-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant Protection Science |
| spelling | doaj.art-8f37601c71804ce79dc541d2c56380c22023-02-23T03:44:20ZengCzech Academy of Agricultural SciencesPlant Protection Science1212-25801805-93412017-12-0153423224210.17221/23/2015-PPSpps-201704-0007Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting teaPandian PrabhakaranBalakrishnan Radhakrishnan0Kodakkadal Kotian Srikumar1Bastian Suresh Kumar2Entomology Division, UPASI Tea Research Foundation, Tea Research Institute, Nirar Dam BPO, Valparai, Tamil Nadu, IndiaEntomology Division, UPASI Tea Research Foundation, Tea Research Institute, Nirar Dam BPO, Valparai, Tamil Nadu, IndiaEntomology Division, UPASI Tea Research Foundation, Tea Research Institute, Nirar Dam BPO, Valparai, Tamil Nadu, IndiaIn search for botanicals as an alternative remedy to synthetic chemicals in the pest control of tea plantations, ferns such as Adiantum raddianum, Asplenium aethiopicum, Cyclosorus interruptus, Dicranopteris linearis, Diplazium polypodioides, and Pteridium aquilinum were evaluated against the two major pests of tea, red spider mite Oligonychus coffeae Nietner and tea mosquito bug Helopeltis theivora Waterhouse, which are the foremost seasonal pests in tea fields, causing severe crop loss. Apart from synthetic chemicals, only the neem kernel extract is recommended in tea fields. The aqueous extracts of ferns were screened at different concentrations against these pests under laboratory and field conditions. The extracts of P. aquilinum and D. linearis showed good contact toxicity at a 5% concentration to O. coffeae. The acaricidal activity was observed in the order P. aquilinum > D. linearis > C. interruptus > A. raddianum > D. polypodioides > A. aethiopicum. Under field conditions, the extract of D. linearis and P. aquilinum showed a 50% reduction in the population of red spider mite and caused no phytotoxic effect to tea leaves. But their insecticidal activity was less pronounced against H. theivora. They exhibit antifeedant activity, which was sustained only for 24 hours. The photochemical screening of extracts showed a qualitatively increased level of saponins in P. aquilinum, D. linearis, and C. interruptus. The study shows that the aqueous extracts of D. linearis and P. aquilinum can be incorporated in the mite control programme in tea.https://pps.agriculturejournals.cz/artkey/pps-201704-0007_efficacy-of-certain-common-ferns-against-red-spider-mite-oligonychus-coffeae-and-tea-mosquito-bug-helopeltis-th.phpbotanicalsaqueous extractsacaricidal activityinsecticidal activity |
| spellingShingle | Pandian Prabhakaran Balakrishnan Radhakrishnan Kodakkadal Kotian Srikumar Bastian Suresh Kumar Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea Plant Protection Science botanicals aqueous extracts acaricidal activity insecticidal activity |
| title | Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea |
| title_full | Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea |
| title_fullStr | Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea |
| title_full_unstemmed | Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea |
| title_short | Efficacy of certain common ferns against red spider mite Oligonychus coffeae and tea mosquito bug Helopeltis theivora infesting tea |
| title_sort | efficacy of certain common ferns against red spider mite oligonychus coffeae and tea mosquito bug helopeltis theivora infesting tea |
| topic | botanicals aqueous extracts acaricidal activity insecticidal activity |
| url | https://pps.agriculturejournals.cz/artkey/pps-201704-0007_efficacy-of-certain-common-ferns-against-red-spider-mite-oligonychus-coffeae-and-tea-mosquito-bug-helopeltis-th.php |
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