Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans
Among phytophagous spider mites, the two-spotted spider mite Tetranychus urticae Koch, 1836 is one of the most important agricultural pests, not only because of the damage it causes, but also because it has a wide host range, infesting many commercial crops such as leafy greens, cotton, beans, and s...
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Universidade Federal De Viçosa
2012-02-01
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| Series: | Revista Ceres |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2012000100011&lng=en&tlng=en |
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| author | Renato Suekane Paulo Eduardo Degrande Elmo Pontes de Melo Thiago Ferreira Bertoncello Izidro dos Santos de Lima Junior Cássio Kodama |
| author_facet | Renato Suekane Paulo Eduardo Degrande Elmo Pontes de Melo Thiago Ferreira Bertoncello Izidro dos Santos de Lima Junior Cássio Kodama |
| author_sort | Renato Suekane |
| collection | DOAJ |
| description | Among phytophagous spider mites, the two-spotted spider mite Tetranychus urticae Koch, 1836 is one of the most important agricultural pests, not only because of the damage it causes, but also because it has a wide host range, infesting many commercial crops such as leafy greens, cotton, beans, and soybeans, among others. This study was carried out in a greenhouse of the Faculdade de Ciências Agrárias (FCA) of the Universidade Federal da Grande Dourados (UFGD), located in the city of Dourados, state of Mato Grosso do Sul. The experiment was arranged in a randomized block design with 5 treatments and 4 replicates. The treatments consisted of 5 levels in percentage of chlorotic symptoms (indicating mite damage): 0%, 25%, 50%, 75%, and 100%. All of the characteristics evaluated, except for number of pods per plant, the number of seeds per plant, the total weight (productivity), and the weight of 1000 seeds, were significantly influenced by the different levels of chlorotic symptoms. The economic damage level for the two-spotted spider mite Tetranychus urticae, according to the equation y = 66.63-0.51 x, based on the price of US$ 11.00 per bag of soybeans and a control cost of US$ 16.00, would be 15.80% chlorotic symptoms. At a price of US$ 29.00 per bag with the same control cost, the economic damage level would be 13% of chlorotic symptoms. |
| first_indexed | 2024-12-22T07:22:38Z |
| format | Article |
| id | doaj.art-c8501be39bd640f7bfef39edb58ed706 |
| institution | Directory Open Access Journal |
| issn | 2177-3491 |
| language | English |
| last_indexed | 2024-12-22T07:22:38Z |
| publishDate | 2012-02-01 |
| publisher | Universidade Federal De Viçosa |
| record_format | Article |
| series | Revista Ceres |
| spelling | doaj.art-c8501be39bd640f7bfef39edb58ed7062022-12-21T18:34:14ZengUniversidade Federal De ViçosaRevista Ceres2177-34912012-02-01591778110.1590/S0034-737X2012000100011S0034-737X2012000100011Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeansRenato Suekane0Paulo Eduardo Degrande1Elmo Pontes de Melo2Thiago Ferreira Bertoncello3Izidro dos Santos de Lima Junior4Cássio Kodama5Universidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosAmong phytophagous spider mites, the two-spotted spider mite Tetranychus urticae Koch, 1836 is one of the most important agricultural pests, not only because of the damage it causes, but also because it has a wide host range, infesting many commercial crops such as leafy greens, cotton, beans, and soybeans, among others. This study was carried out in a greenhouse of the Faculdade de Ciências Agrárias (FCA) of the Universidade Federal da Grande Dourados (UFGD), located in the city of Dourados, state of Mato Grosso do Sul. The experiment was arranged in a randomized block design with 5 treatments and 4 replicates. The treatments consisted of 5 levels in percentage of chlorotic symptoms (indicating mite damage): 0%, 25%, 50%, 75%, and 100%. All of the characteristics evaluated, except for number of pods per plant, the number of seeds per plant, the total weight (productivity), and the weight of 1000 seeds, were significantly influenced by the different levels of chlorotic symptoms. The economic damage level for the two-spotted spider mite Tetranychus urticae, according to the equation y = 66.63-0.51 x, based on the price of US$ 11.00 per bag of soybeans and a control cost of US$ 16.00, would be 15.80% chlorotic symptoms. At a price of US$ 29.00 per bag with the same control cost, the economic damage level would be 13% of chlorotic symptoms.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2012000100011&lng=en&tlng=ennível de controleprejuízosintomatologiamanejo integrado de pragasentomologia econômica |
| spellingShingle | Renato Suekane Paulo Eduardo Degrande Elmo Pontes de Melo Thiago Ferreira Bertoncello Izidro dos Santos de Lima Junior Cássio Kodama Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans Revista Ceres nível de controle prejuízo sintomatologia manejo integrado de pragas entomologia econômica |
| title | Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans |
| title_full | Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans |
| title_fullStr | Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans |
| title_full_unstemmed | Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans |
| title_short | Damage level of the two-spotted spider mite Tetranychus urticae Koch (acari: tetranychidae) in soybeans |
| title_sort | damage level of the two spotted spider mite tetranychus urticae koch acari tetranychidae in soybeans |
| topic | nível de controle prejuízo sintomatologia manejo integrado de pragas entomologia econômica |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2012000100011&lng=en&tlng=en |
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