Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control
Rainfastness of fungicides used in the control of late blight (Phytophthora infestans) and early blight (Alternaria solani) of potato was evaluated under green house and laboratory conditions. ‘Agata’ and ‘Monalisa’ plants treated with fungicides against both diseases were subjected to 20 mm control...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2014-12-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/14924 |
| _version_ | 1818515145154887680 |
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| author | Jesus Guerino Tofoli Ricardo José Domingues Paulo Cesar Tavares de Melo Josiane Takassaki Ferrari |
| author_facet | Jesus Guerino Tofoli Ricardo José Domingues Paulo Cesar Tavares de Melo Josiane Takassaki Ferrari |
| author_sort | Jesus Guerino Tofoli |
| collection | DOAJ |
| description | Rainfastness of fungicides used in the control of late blight (Phytophthora infestans) and early blight (Alternaria solani) of potato was evaluated under green house and laboratory conditions. ‘Agata’ and ‘Monalisa’ plants treated with fungicides against both diseases were subjected to 20 mm controlled rain simulation for 6 min at 30 min, 1, 2, and 4 h after application. Once all leaves had dried, foliar discs were transferred to Petri dishes and inoculated with the respective pathogens. The plates were then incubated in a BOD chamber for a 12-h photoperiod at 18°C and 25°C, respectively. Disease severity was evaluated by determining the area (%) of the foliar discs affected by disease on 5 and 7 days post-inoculation. The results suggest that systemic or inherent tenacity fungicides were less influenced by the simulated rain as compared to contact fungicides. An increase in drying time promoted higher control levels of both diseases, indicating a better retention and absorption of the tested fungicides. |
| first_indexed | 2024-12-11T00:25:09Z |
| format | Article |
| id | doaj.art-9ba46069dd264d1a90acdf9340ac9bb1 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-12-11T00:25:09Z |
| publishDate | 2014-12-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-9ba46069dd264d1a90acdf9340ac9bb12022-12-22T01:27:36ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592014-12-013562977299010.5433/1679-0359.2014v35n6p2977Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight controlJesus Guerino Tofoli0Ricardo José Domingues 1Paulo Cesar Tavares de Melo 2Josiane Takassaki Ferrari3Agência Paulista de Tecnologia dos Agronegócios, APTA, Instituto BiológicoAgência Paulista de Tecnologia dos Agronegócios, APTA, Instituto BiológicoEscola Superior de Agricultura Luis de QueirozAgência Paulista de Tecnologia dos Agronegócios, APTA, Instituto BiológicoRainfastness of fungicides used in the control of late blight (Phytophthora infestans) and early blight (Alternaria solani) of potato was evaluated under green house and laboratory conditions. ‘Agata’ and ‘Monalisa’ plants treated with fungicides against both diseases were subjected to 20 mm controlled rain simulation for 6 min at 30 min, 1, 2, and 4 h after application. Once all leaves had dried, foliar discs were transferred to Petri dishes and inoculated with the respective pathogens. The plates were then incubated in a BOD chamber for a 12-h photoperiod at 18°C and 25°C, respectively. Disease severity was evaluated by determining the area (%) of the foliar discs affected by disease on 5 and 7 days post-inoculation. The results suggest that systemic or inherent tenacity fungicides were less influenced by the simulated rain as compared to contact fungicides. An increase in drying time promoted higher control levels of both diseases, indicating a better retention and absorption of the tested fungicides.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/14924Phytophthora infestans; Alternaria solani; Solanum tuberosum L.; Tenacity; Rainfastness |
| spellingShingle | Jesus Guerino Tofoli Ricardo José Domingues Paulo Cesar Tavares de Melo Josiane Takassaki Ferrari Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control Semina: Ciências Agrárias Phytophthora infestans; Alternaria solani; Solanum tuberosum L.; Tenacity; Rainfastness |
| title | Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| title_full | Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| title_fullStr | Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| title_full_unstemmed | Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| title_short | Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| title_sort | effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control |
| topic | Phytophthora infestans; Alternaria solani; Solanum tuberosum L.; Tenacity; Rainfastness |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/14924 |
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