Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks)
The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one important pest of cotton crop due to reductions in cotton yield and fiber quality. Thus, this work evaluated the toxicity of the synthetic acaricide spiromesifen and natural products on T. urticae and the compatibil...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2013-12-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11790 |
| _version_ | 1829495286413656064 |
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| author | José Vargas de Oliveira Jorge Braz Torres Cláudia Helena Cysneiros Matos |
| author_facet | José Vargas de Oliveira Jorge Braz Torres Cláudia Helena Cysneiros Matos |
| author_sort | José Vargas de Oliveira |
| collection | DOAJ |
| description | The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one important pest of cotton crop due to reductions in cotton yield and fiber quality. Thus, this work evaluated the toxicity of the synthetic acaricide spiromesifen and natural products on T. urticae and the compatibility with the predatory mite Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae). Spiromesifen and the natural products Azadirachtin A/B, Azadirachtin 1%, Jatropha curcas L. and Ricinus communis L. oils were used at different concentrations; the leaf dipping method was employed. The mortality of T. urticae females and eggs was evaluated 48 and 96 h after treatment to calculate the lethal concentrations. The effect on P. macropilis was studied using the LC50s obtained to T. urticae. All acaricides tested were effective in controlling females and eggs of T. urticae. However, according to the LC50s and LC90s calculated, spiromesifen was the most toxic acaricide to females and J. curcas oil presented the higher toxicity to eggs. Spiromesifen, J. curcas oil and Azadiractina 1% caused side effects on P. macropilis. However, only espiromesifeno was classified as harmful to the predator, whereas Azadirachtin A/B and R. communis oil were slightly harmful. R. communis and Azadirachtin A/B were effective in controlling the two-spotted spider mite and promising for the management of this pest in cotton considering their low toxicity to the predator. |
| first_indexed | 2024-12-16T07:07:32Z |
| format | Article |
| id | doaj.art-4ca77f632f5a4017b34ea5289d56b577 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-12-16T07:07:32Z |
| publishDate | 2013-12-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-4ca77f632f5a4017b34ea5289d56b5772022-12-21T22:39:59ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592013-12-013462675268610.5433/1679-0359.2013v34n6p2675Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks)José Vargas de Oliveira 0Jorge Braz Torres1Cláudia Helena Cysneiros Matos 2Universidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUUnidade Acadêmica de Serra TalhadaThe two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one important pest of cotton crop due to reductions in cotton yield and fiber quality. Thus, this work evaluated the toxicity of the synthetic acaricide spiromesifen and natural products on T. urticae and the compatibility with the predatory mite Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae). Spiromesifen and the natural products Azadirachtin A/B, Azadirachtin 1%, Jatropha curcas L. and Ricinus communis L. oils were used at different concentrations; the leaf dipping method was employed. The mortality of T. urticae females and eggs was evaluated 48 and 96 h after treatment to calculate the lethal concentrations. The effect on P. macropilis was studied using the LC50s obtained to T. urticae. All acaricides tested were effective in controlling females and eggs of T. urticae. However, according to the LC50s and LC90s calculated, spiromesifen was the most toxic acaricide to females and J. curcas oil presented the higher toxicity to eggs. Spiromesifen, J. curcas oil and Azadiractina 1% caused side effects on P. macropilis. However, only espiromesifeno was classified as harmful to the predator, whereas Azadirachtin A/B and R. communis oil were slightly harmful. R. communis and Azadirachtin A/B were effective in controlling the two-spotted spider mite and promising for the management of this pest in cotton considering their low toxicity to the predator.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11790Acari; Cotton; Chemical control; Alternative control; Biological control. |
| spellingShingle | José Vargas de Oliveira Jorge Braz Torres Cláudia Helena Cysneiros Matos Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) Semina: Ciências Agrárias Acari; Cotton; Chemical control; Alternative control; Biological control. |
| title | Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) |
| title_full | Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) |
| title_fullStr | Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) |
| title_full_unstemmed | Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) |
| title_short | Toxicity of spiromesifen and natural acaricides to Tetranychus urticae koch and compatibility with Phytoseiulus macropilis (Banks) |
| title_sort | toxicity of spiromesifen and natural acaricides to tetranychus urticae koch and compatibility with phytoseiulus macropilis banks |
| topic | Acari; Cotton; Chemical control; Alternative control; Biological control. |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11790 |
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