Remoção Pela Chuva De Diferentes Formulações De Flutriafol Aplicadas Em Soja, Com E Sem a Adição De Óleo Mineral Na Calda

Peres-Oliveira, Maria Aparecida; Antuniassi, Ulisses Rocha; Velini, Edivaldo Domingues

doi:10.17224/energagric.2011v26n3p80-97

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…Even 3 hours after application of the fungicide, there was still a reduction in the amount of active ingredient in the leaflets. In an experiment conducted by Oliveira (17), the values observed 1, 2 and 48 hours after application did not reflect the common sense of the fungicide market, which recommends a minimum interval of 2 hours between application and rainfall.…”

Section: Resultsmentioning

confidence: 90%

Leaf area, spray volumes and applicable quantities of fungicide during the protection period for control of Asian soybean rust

et al. 2018

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The purpose of this study was to check the influence of leaf area index, spray volumes and applicable quantities of fungicide during the protection period, and for control of Asian soybean rust. All tests were conducted in the field and in the laboratory between 2014 and 2016. The quantity of fungicide and the spray volume were varied in the application of fungicides on soybean plants with different leaf area index. Rainfall simulation tests were also carried out at different times after application of fungicide. The spray volume and application rate of fungicide should be adequately proportioned according to the leaf area index of the soybean cultivar. The closer to the time of application that the rain occurs, the lower the control obtained by applying the fungicide. The leaf area index, the fungicide application rates, and the spray volumes influenced the protection period of fungicides and the control of Asian soybean rust.

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Section: Resultsmentioning

confidence: 90%

Leaf area, spray volumes and applicable quantities of fungicide during the protection period for control of Asian soybean rust

et al. 2018

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“…These results indicate that longer periods between application and precipitation lead to increased chances of drying and adherence of the deposits to the treated leaf surface, or to higher penetration or translocation of the product through the plant (BRUGGEN et al, 1987;SCHEPERS, 1996;DUARTE, 2008;OLIVEIRA, 2009). …”

Section: Resultsmentioning

confidence: 99%

“…Santos et al (2002) observed that exposure to 20 mm of simulated rainfall, 15 min after each application, did not interfere with the efficacy of cyproconazole and tetraconazole in the control of coffee leaf rust. However, it is well known that shorter duration between pulverization and exposure to rain increase the chance of fungicides being washed off (OLIVEIRA, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control

Töfoli

Domingues

Melo³

et al. 2014

Sem. Ci. Agr.

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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 postinoculation. 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. Key words: Phytophthora infestans, Alternaria solani, Solanum tuberosum L., tenacity, rainfastness ResumoA resistência de fungicidas à chuva no controle da requeima (Phytophthora infestans) e pinta preta (Alternaria solani) da batata foi avaliada em condições de casa-se vegetação e laboratório. Plantas de batata das cultivares Agata e Monalisa tratadas com fungicidas indicados para as duas doenças foram submetidas à chuva controlada de 20 mm durante 6 minutos aos 30 minutos, 1, 2 e 4 horas após a pulverização. Após a secagem das plantas, discos foliares foram coletados e transferidos para placas de Petri e inoculados com os patógenos. Em seguida as placas foram incubadas em câmara BOD a 18° C para P. infestans e 25 ° C para A. solani, sob fotoperíodo de 12 horas. A severidade foi avaliada através da porcentagem da área do disco afetada pelas doenças aos 5 e 7 dias após a inoculação, respectivamente. Os resultados obtidos permitiram concluir que os fungicidas sistêmicos, translaminares ou com tenacidade inerente foram menos afetados pela chuva simulada quando comparados aos fungicidas de contato. O aumento do tempo de secagem promoveu maiores níveis de controle da requeima e pinta preta, evidenciando uma maior retenção ou absorção dos produtos testados.

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Diplopods and Agrochemicals—a Review

Francisco

Fontanetti

2015

Water Air Soil Pollut

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Remoção Pela Chuva De Diferentes Formulações De Flutriafol Aplicadas Em Soja, Com E Sem a Adição De Óleo Mineral Na Calda

Cited by 3 publications

References 5 publications

Leaf area, spray volumes and applicable quantities of fungicide during the protection period for control of Asian soybean rust

Leaf area, spray volumes and applicable quantities of fungicide during the protection period for control of Asian soybean rust

Effect of simulated rain on the efficiency of fungicides in potato late blight and early blight control

Diplopods and Agrochemicals—a Review

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