Efficacy of fenhexamid treatments against Botrytis cinerea in grapevine as affected by time of application and meteorological conditions

Molitor, Daniel; Schultz, Mareike; Friedrich, B.; Viret, Olivier; Hoffmann, Lucien; Beyer, Marco

doi:10.1016/j.cropro.2018.03.007

Cited by 9 publications

(5 citation statements)

References 12 publications

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“…This is consistent with our results in China on the four cultivars, but in contrast to observations in Luxembourg on Riesling, where the highest treatment efficacy occurred at bunch closure stage (Eichhorn-Lorenz stage 33, [45]). Petit et al [46] proved a control practice of spraying at the end of flowering (Eichhorn-Lorenz stage 23), bunch closure (Eichhorn-Lorenz stage 33) and the beginning of veraison (Eichhorn-Lorenz stage 35) to be more effective to control B. cinerea on grape compared to a single fungicide application. Our work showed that two sprays, one during the full-bloom stage (Eichhorn-Lorenz stage 23) and the other during the 10-days-after-full-bloom stage (Eichhorn-Lorenz stage 27), result in a significant difference in the disease severity when applying fludioxonil (kg/ha), compared to using the traditional practice of four sprays.…”

Section: Discussionmentioning

confidence: 99%

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

Wang,

Liu,

Zhang

et al. 2023

Agronomy

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Gray mold caused by Botrytis cinerea is a destructive disease in grapes. Although the preharvest use of pesticides can control it, fungicide resistance in B. cinerea is now common. We used an Effect and Less Spraying Control (ELSC) method for applying fungicides effective against B. cinerea on grapes. The spraying schedule was determined by exploring the key stages of B. cinerea invasion using field and in vitro inoculation tests. The results indicated that the stage most vulnerable to pathogen invasion is the full-bloom stage. The disease incidence/severity in this stage is highest compared with the pre-bloom, 10-days-after-full-bloom, bunch-closure and veraison stages. Given the inoculation results and the threat of residual infected petals, the ELSC method established an optimum spray schedule at full bloom and 10 days after full bloom. To evaluate the ELSC method, four kinds of fungicides were used in an experimental trial in Beijing in 2015 and 2017; Shanghai in 2016; and Hebei in 2019 and 2021. Fludioxonil was the most effective fungicide, followed by Pythium oligandrum (bio-fungicide), difenoconazole + azoxystrobin and pyraclostrobin. ELSC was more effective against B. cinerea than the traditional control schedule, when comparing the disease severity (i.e., 0.07 ± 0.10% in ELSC and 0.49 ± 0.014% in the traditional practice when using fludioxonil). The average yield per hectare in ELSC confirmed that spraying during flowering does not have a deleterious effect on grape yield. It produced a 1224.37 00 kg/ha greater yield than the control group when fludioxonil was applied.

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Section: Discussionmentioning

confidence: 99%

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

Wang,

Liu,

Zhang

et al. 2023

Agronomy

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“…The cyflufenamids remain effective against powdery mildew of cucurbits [40] [41] [42]. The fenhexamides were found ineffective for treating gray rot [43] [44] [45].…”

Section: Discussionmentioning

confidence: 99%

Biocontrol Potential of <i>Bacillus amyloliquefaciens</i> Bc2 and <i>Trichoderma harzianum</i> TR against Strawberry Anthracnose under Laboratory and Field Conditions

Es-Soufi¹,

Tahiri²,

Azaroual³

et al. 2020

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The increasingly strict regulation of the use of phytosanitary products and the will of the populations to move towards sustainable development allow bio-sourced products and more particularly for biocontrol in the field of pesticides to progress. The study carried out here concerns the evaluation of the potency of Bacillus amyloliquefaciens Bc2 and Trichoderma harzianum to fight against strawberry cultures infected with anthracnose (Fragaria × ananassa Duch.). The studies were carried out in the laboratory and in the field. The results indicate that B. amyloliquefaciens Bc2 and Trichoderma harzianum TR are effective for the biological control of anthracnose, gray mold and powdery mildew on strawberries grown in field conditions. The increase in plant size and the number of fruits produced with these control agents has also been observed.

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“…Regular treatments against Downy Mildew and Powdery Mildew took place in the entire vineyard until 03 August 2020. Cutisan, Surround ® and Carboliq were applied at 2% (w/v) diluted in water using a backpack‐sprayer (Solo Akku 416, Solo Kleinmotoren GmbH) equipped with injector nozzles (Albuz AVI 80, Agrotop Spray Technology) (Molitor, Schultz, et al., 2018). The cluster zone of the plants was sprayed until runoff.…”

Section: Methodsmentioning

confidence: 99%

Drosophila suzukii population dynamics and control efficiency of mineral dusts with a focus on grape protection

Dam

Molitor

Schultz³

et al. 2022

J Applied Entomology

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The invasive pest Drosophila suzukii is threatening berry production. It is mainly managed via chemical control, which is associated with consumer and environmental concerns. Here, we tested the efficacy of mineral dusts under field and laboratory conditions in 2019 and 2020. Furthermore, population dynamics were studied in a vineyard and its surroundings. The kaolin products Cutisan and Surround®, as well as the CaCO3 product Carboliq, had neither insecticidal nor repellent effects on Drosophila suzukii adults in laboratory choice tests with grapes at concentrations of up to 2% (w/v). Cutisan and Surround® significantly reduced the number of deposited eggs (−41.9% and −49.3% respectively) while Carboliq had no effect on the oviposition under laboratory conditions. The Surround® treatment significantly reduced the number of flies trapped on 09 September 2020 at a test vineyard. Depending on the assessment date and treatment, between 59% and 84% of the flies in the bait traps were females. The number of eggs found in fruit treated with Carboliq in the field was higher at each assessment date than in the control but this difference was not statistically significant. Fruit treated with Cutisan or Surround® in the field showed an equivalent or lower average number of eggs compared with the control, but this difference was only significant on 24 September 2020. Between May 2015 and October 2020, the highest number of D. suzukii adults was observed around September in the field and a decline of the population occurred in the winter months until July. In epidemic years, temperature – humidity – combinations prior to population peaks were quite stable with low humidity being associated with a high temperature and vice versa. In non‐epidemic years, humidity fluctuated more than in epidemic years and temperatures were lower before population peaks. The effect of global radiation on population maxima seemed to be minor.

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Efficacy of fenhexamid treatments against Botrytis cinerea in grapevine as affected by time of application and meteorological conditions

Cited by 9 publications

References 12 publications

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

Biocontrol Potential of <i>Bacillus amyloliquefaciens</i> Bc2 and <i>Trichoderma harzianum</i> TR against Strawberry Anthracnose under Laboratory and Field Conditions

Drosophila suzukii population dynamics and control efficiency of mineral dusts with a focus on grape protection

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Efficacy of fenhexamid treatments against Botrytis cinerea in grapevine as affected by time of application and meteorological conditions

Cited by 9 publications

References 12 publications

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

An Effect and Less Spraying Control Method Successfully Controls Botrytis cinerea on Grapes in China

Biocontrol Potential of &lt;i&gt;Bacillus amyloliquefaciens&lt;/i&gt; Bc2 and &lt;i&gt;Trichoderma harzianum&lt;/i&gt; TR against Strawberry Anthracnose under Laboratory and Field Conditions

Drosophila suzukii population dynamics and control efficiency of mineral dusts with a focus on grape protection

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Product

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Biocontrol Potential of <i>Bacillus amyloliquefaciens</i> Bc2 and <i>Trichoderma harzianum</i> TR against Strawberry Anthracnose under Laboratory and Field Conditions