Influence of formulations and adjuvants on the rainfastness of maneb and mancozeb on pea and potato

Kudsk, Per; Mathiassen, Solvejg K.; Kirknel, Erik

doi:10.1002/ps.2780330107

Cited by 40 publications

(24 citation statements)

References 4 publications

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“…, 6 8 (Hyun , 2013). , , (Bruhn , 1982;Eife , 2002;Hunsche , 2007;van Bruggen , 1986) 197 (Bruhn , 1982;Eife , 2002;Kudsk , 1991;van Bruggen , 1986). (Korean Crop Protection Association, 2014).…”

Section: 5% (Diaporthe Citri)mentioning

confidence: 99%

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Improvement of Control Efficacy of Mancozeb Wettable Powder against Citrus Melanose by Mixing with Paraffin Oil

Yi¹,

Hyun²,

Hwang³

et al. 2014

Research in Plant Disease

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This study was carried out to determine the effect of mixing with paraffin oil on rainfastness of mancozeb on citrus fruits and assay the improvement of control effect of mancozeb against citrus melanose by mixing with paraffin oil. In artificial rainfall condition (7.2 mm/hr), the attached contents of mancozeb on detached fruits were the most in treatment of mancozeb 0.2% + paraffin oil 0.1% as the contents was 7.43 μg/cm 2 after treatment of rainfall for 10 hr. In open field condition, the contents of attached mancozeb on fruits were significantly more in treatment of mancozeb 0.2% + paraffin oil 0.1% or 0.25% than the other treatments 1, 15 and 25 days after treatment 2009 and 2010 seasons. The disease incidence was significantly lower in treatment of mancozeb 0.2% + paraffin oil 0.1% or 0.25% than treatment of mancozeb 0.2% only 2009, 2010 and 2011 seasons. Based on this study, it was suggested that the control effect of mancozeb against citrus melanose can be improved by mixing with paraffin oil.

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Section: 5% (Diaporthe Citri)mentioning

confidence: 99%

“…(Bruhn , 1982;Cabras Angioni, 2001;Fife , 2002;Hunsche , 2007;van Bruggen , 1986 . (Kudsk , 1991;Thacker Young, 1999;Vawdrey, 2004 …”

Section: 사용 자재unclassified

Improvement of Control Efficacy of Mancozeb Wettable Powder against Citrus Melanose by Mixing with Paraffin Oil

Yi¹,

Hyun²,

Hwang³

et al. 2014

Research in Plant Disease

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“…As proved in Bruhn & Fry (1982b) the logarithmic rate in function of time describes wash off of chlorothalonil from potato leaves. However, the rainfastness also depends on leaf surface properties (Reynolds et al, 1994) and can be increased by formulation and adjuvants (Kudsk et al, 1991;Ryckaert et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of the spray volume adjustment model on the efficiency of fungicides and residues in processing tomato

Ratajkiewicz

Kierzek

Raczkowski

et al. 2016

Span. j. agric. res.

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This study compared the effects of a proportionate spray volume (PSV) adjustment model and a fixed model (300 L/ha) on the infestation of processing tomato with potato late blight (Phytophthora infestans (Mont.) de Bary) (PLB) and azoxystrobin and chlorothalonil residues in fruits in three consecutive seasons. The fungicides were applied in alternating system with or without two spreader adjuvants. The proportionate spray volume adjustment model was based on the number of leaves on plants and spray volume index. The modified Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method was optimized and validated for extraction of azoxystrobin and chlorothalonil residue. Gas chromatography with a nitrogen and phosphorus detector and an electron capture detector were used for the analysis of fungicides. The results showed that higher fungicidal residues were connected with lower infestation of tomato with PLB. PSV adjustment model resulted in lower infestation of tomato than the fixed model (300 L/ha) when fungicides were applied at half the dose without adjuvants. Higher expected spray interception into the tomato canopy with the PSV system was recognized as the reasons of better control of PLB. The spreader adjuvants did not have positive effect on the biological efficacy of spray volume application systems. The results suggest that PSV adjustment model can be used to determine the spray volume for fungicide application for processing tomato crop.

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“…Rain can affect the activity of a fungicide by causing its dilution, redistribution, or physical removal from the site of application (THACKER;YOUNG, 1999). The factors that may affect this interaction include quantity, intensity, and frequency of precipitation (CABRAS et al, 2001;FIFE;NOKES, 2002); time taken for the deposits to dry (SCHEPERS, 1996;DUARTE, 2008); product formulation (KUDSK; MATHIASSEN; KIRKNEL, 1991;TÖFOLI et al, 2006); applied dose (SCHILDER, 2010); use of adjuvants (KUDSK; MATHIASSEN; KIRKNEL, 1991;GREEN, 2001), and the nature of the treated leaf surface (REYNOLDS; REILLY; HOTCHKISS, 1994;DEBORTOLI, 2008).…”

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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Influence of formulations and adjuvants on the rainfastness of maneb and mancozeb on pea and potato

Cited by 40 publications

References 4 publications

Improvement of Control Efficacy of Mancozeb Wettable Powder against Citrus Melanose by Mixing with Paraffin Oil

Improvement of Control Efficacy of Mancozeb Wettable Powder against Citrus Melanose by Mixing with Paraffin Oil

Effect of the spray volume adjustment model on the efficiency of fungicides and residues in processing tomato

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

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