Control of white mold of dry bean and residual activity of fungicides applied by chemigation

Miorini, T; Raetano, Carlos Gilberto; Everhart, Sydney E.

doi:10.1016/j.cropro.2016.12.023

Cited by 12 publications

(9 citation statements)

References 38 publications

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“…Although changes in host susceptibility may occur with increasing plant age and phenological stage, there is a general expectation that resistance to biotrophic pathogens increases with plant age and resistance to necrotrophic pathogens decreases with plant age (Farber and Mundt 2017). Since S. sclerotiorum is traditionally considered to be a necrotrophic pathogen, our current results and those reported in two other papers that noted increased resistance of older plants are contrary to the expectation for a necrotroph (Augusto and Brenneman 2012;Miorini et al 2017). Authors in the previous studies hypothesized that the observed increased resistance was the result of fungicide applications and an accumulation of fungicide residue (Augusto and Brenneman 2012;Miorini et al 2017).…”

Section: Discussioncontrasting

confidence: 57%

“…Since S. sclerotiorum is traditionally considered to be a necrotrophic pathogen, our current results and those reported in two other papers that noted increased resistance of older plants are contrary to the expectation for a necrotroph (Augusto and Brenneman 2012;Miorini et al 2017). Authors in the previous studies hypothesized that the observed increased resistance was the result of fungicide applications and an accumulation of fungicide residue (Augusto and Brenneman 2012;Miorini et al 2017). In the current study, however, no fungicides were applied, consequently, we are able to conclude that the increase in resistance that we observed is more likely due to physiological changes in the plant that occur…”

Section: Discussioncontrasting

confidence: 56%

“…greater than the non-treated plots (Miorini et al 2017). Likewise, application of fungicides in common bean results in yields that were 29.9 to 118.6% greater than the untreated plots (Vieira et al 2010).…”

Section: Introductionmentioning

confidence: 96%

“…For example, in a study conducted between 1994 and 2001 in North Dakota, it was shown that for every percent unit increase in white mold incidence, yield was reduced by 12 kg ha -1 in pinto bean and by 23 kg ha -1 in navy bean (Del Río et al 2004). Moreover, without the use of fungicide control, dry bean yield loss to white mold in Brazil has been reported to vary from 17 to 54% (Miorini et al 2017;Vieira et al 2010). …”

Section: Introductionmentioning

confidence: 99%

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Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

Miorini

Kamvar

Higgins

et al. 2018

Preprint

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Sclerotinia sclerotiorum (Lib.) de Bary is an important yield-reducing disease in the UnitedStates and Brazil with a diverse host range, including dry bean and soybean. Characterization of both the physiological resistance of commercial cultivars to S. sclerotiorum and the range of aggressiveness among S. sclerotiorum isolates collected from locations where these cultivars are to be deployed, provides important information for making management recommendations. To address this in the present study, we first sought to characterize the range of S. sclerotiorum aggressiveness on soybean and dry bean, using a selection of isolates from Brazil and the U.S.Our second objective was to evaluate the performance of dry bean and soybean cultivars that were developed in Brazil. Eighty-seven isolates of S. sclerotiorum were collected from soybean crops from the U.S. and Brazil and used in this project. U.S. soybean cultivar Dassel and Brazilian dry bean cultivar IAC Alvorada were evaluated using a detached leaf bioassay (DLB) with 65 and 28 isolates respectively. For the straw test, U.S. dry bean cultivar G122 and Brazilian dry bean cultivar IAC Alvorada were inoculated with 32 and 28 isolates respectively.Results showed a significant difference among isolates (P < 0.001). After evaluating 23 Brazilian dry bean cultivars, results of the DLB and straw test showed IAC Diplomata and IPR Tangará were more tolerant to S. sclerotiorum. Among the 11 Brazilian soybean cultivars, M5410 and M6410 were found to be less susceptible to S. sclerotiorum. Collectively, results of this study are important for improving our understanding of variation in pathogen aggressiveness from geographically isolated populations and in identifying cultivars that are likely to have partial resistance.

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Section: Discussioncontrasting

confidence: 57%

Section: Discussioncontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

Miorini

Kamvar

Higgins

et al. 2018

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is recommended to combine these cultural practices with prophylactic application of fungicides, which are timed to prevent primary infection of susceptible plant parts. In Brazil, a two year study showed application of fungicides resulted in yields that were 20.2 to 87.4% greater than the non-treated plots (Miorini et al 2017). Likewise, application of fungicides in common bean results in yields that were 29.9 to 118.6% greater than the untreated plots (Vieira et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

Miorini

Kamvar

Higgins

et al. 2018

Preprint

Self Cite

View full text Add to dashboard Cite

Sclerotinia sclerotiorum (Lib.) de Bary is an important yield-reducing disease in the United States and Brazil with a diverse host range, including dry bean and soybean. Characterization of both the physiological resistance of commercial cultivars to S. sclerotiorum and the range of aggressiveness among S. sclerotiorum isolates collected from locations where these cultivars are to be deployed, provides important information for making management recommendations. To address this in the present study, we first sought to characterize the range of S. sclerotiorum aggressiveness on soybean and dry bean, using a selection of isolates from Brazil and the U.S. Our second objective was to evaluate the performance of dry bean and soybean cultivars that were developed in Brazil. Eighty-seven isolates of S. sclerotiorum were collected from soybean crops from the U.S. and Brazil and used in this project. U.S. soybean cultivar Dassel and Brazilian dry bean cultivar IAC Alvorada were evaluated using a detached leaf bioassay (DLB) with 65 and 28 isolates respectively. For the straw test, U.S. dry bean cultivar G122 and Brazilian dry bean cultivar IAC Alvorada were inoculated with 32 and 28 isolates respectively. Results showed a significant difference among isolates (P < 0.001). After evaluating 23 Brazilian dry bean cultivars, results of the DLB and straw test showed IAC Diplomata and IPR Tangará were more tolerant to S. sclerotiorum. Among the 11 Brazilian soybean cultivars, M5410 and M6410 were found to be less susceptible to S. sclerotiorum. Collectively, results of this study are important for improving our understanding of variation in pathogen aggressiveness from geographically isolated populations and in identifying cultivars that are likely to have partial resistance.

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The Impact of Pesticides on Flower‐Visiting Insects: A Review with Regard to European Risk Assessment

Uhl

Brühl

2019

Enviro Toxic and Chemistry

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Flower‐visiting insects (FVIs) are an ecologically diverse group of mobile, flying species that should be protected from pesticide effects according to European policy. However, there is an ongoing decline of FVI species, partly caused by agricultural pesticide applications. Therefore, the risk assessment framework needs to be improved. We synthesized the peer‐reviewed literature on FVI groups and their ecology, habitat, exposure to pesticides, and subsequent effects. The results show that FVIs are far more diverse than previously thought. Their habitat, the entire agricultural landscape, is potentially contaminated with pesticides through multiple pathways. Pesticide exposure of FVIs at environmentally realistic levels can cause population‐relevant adverse effects. This knowledge was used to critically evaluate the European regulatory framework of exposure and effect assessment. The current risk assessment should be amended to incorporate specific ecological properties of FVIs, that is, traits. We present data‐driven tools to improve future risk assessments by making use of trait information. There are major knowledge gaps concerning the general investigation of groups other than bees, the collection of comprehensive data on FVI groups and their ecology, linking habitat to FVI exposure, and study of previously neglected complex population effects. This is necessary to improve our understanding of FVIs and facilitate the development of a more protective FVI risk assessment. Environ Toxicol Chem 2019;38:2355–2370. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC

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Control of white mold of dry bean and residual activity of fungicides applied by chemigation

Cited by 12 publications

References 38 publications

Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

Variation in pathogen aggression and cultivar performance against Sclerotinia sclerotiorum in soybean and dry bean from Brazil and the U.S.

The Impact of Pesticides on Flower‐Visiting Insects: A Review with Regard to European Risk Assessment

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