Abstract
Aim: The present work evaluated different strategies for the control of grey mold, caused by Botrytis cinerea, on wine grapes, including the use of the plant growth regulator Gibb3, leaf removal and/or botryticide treatments. The efficiency of the different control strategies (disease incidence and severity, yield) as well as the effect on the cluster structure was investigated. Methods and results: The trials were conducted in commercial vineyards in the Moselle Valley (Luxembourg) between the years 2007 and 2009, on the Pinot gris, Pinot blanc and Pinot noir grape varieties. The untreated control (T1) was compared to the following treatments : (T2) Gibb3, (T3) Gibb3 combined with leaf removal in the cluster zone after bloom, (T4) leaf removal after bloom combined with two times botryticides and (T5) Gibb3 combined with two times botryticides. The combination of Gibb3 with leaf removal or botryticide applications led to an efficiency level in grey mold reduction of around 60% and a decrease in cluster density when compared to the control. Moreover, we showed that the progression of grey mold disease was slowed down by the three treatments T3, T4 and T5. Conclusions: Gibberellic acid applied at full bloom as stand-alone treatment did not reduce in a significant way the compactness of the grape clusters and the impact on grey mold development was low. For a significant decrease of disease severity, gibberellic acid had to be combined with an additional measure, such as leaf removal or the use of botryticides. Based on its positive effect on cluster structure and microclimate, leaf removal can be recommended as a basic measure that can be further combined with an application of botryticides or gibberellic acid. Significance and impact of the study: All the tested strategies combining two measures have shown their potential to prolong the ripening period and therewith to improve wine quality. Moreover, the combined use of gibberellic acid and leaf removal represents a sustainable strategy for integrated viticulture due to its reduced input of organic-synthetic pesticides into the environment.
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Claims 9
Claim · model-written summary
Gibb3 combined with leaf removal or botryticide applications reduced grey mold by about 60% compared with the control
- Taxon
- wine grapes
Vitis viniferae0 - Treatment
- Gibb3 with leaf removal or botryticide applicationse1
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- grey mold reductione1
- Direction
- increaseinferrede1
- Value
- around 60%e1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e1“The combination of Gibb3 with leaf removal or botryticide applications led to an efficiency level in grey mold reduction of around 60% and a decrease in cluster density when compared to the control”
Claim · model-written summary
Gibb3 combined with leaf removal or botryticide applications decreased cluster density compared with the control
- Taxon
- wine grapesVitis viniferae0
- Treatment
- Gibb3 with leaf removal or botryticide applicationse1
- Outcome
- cluster densitye1
- Direction
- decreasee1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e1“The combination of Gibb3 with leaf removal or botryticide applications led to an efficiency level in grey mold reduction of around 60% and a decrease in cluster density when compared to the control”
Claim · model-written summary
The treatments T3, T4 and T5 slowed the progression of grey mold disease
- Taxon
- wine grapesVitis viniferae0
- Treatment
- treatments T3, T4 and T5e2
- Outcome
- progression of grey mold diseasee2
- Direction
- slowed downe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e2“Moreover, we showed that the progression of grey mold disease was slowed down by the three treatments T3, T4 and T5”
Claim · model-written summary
Gibberellic acid applied alone at full bloom did not reduce grape cluster compactness significantly
- Taxon
- grapee3
- Treatment
- Gibberellic acid applied at full bloome3
- Outcome
- compactness of the grape clusterse3
- Direction
- did not reducee3
Not reportedComparator
Verbatim
e3“Gibberellic acid applied at full bloom as stand-alone treatment did not reduce in a significant way the compactness of the grape clusters and the impact on grey mold development was low”
Claim · model-written summary
Gibberellic acid applied alone at full bloom had a low impact on grey mold development
Verbatim
e3“Gibberellic acid applied at full bloom as stand-alone treatment did not reduce in a significant way the compactness of the grape clusters and the impact on grey mold development was low”
Claim · model-written summary
For a significant decrease of disease severity, gibberellic acid must be combined with an additional measure
- Taxon
- wine grapesVitis viniferae0
- Outcome
- gibberellic acid had to be combined with an additional measuree4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e4“For a significant decrease of disease severity, gibberellic acid had to be combined with an additional measure, such as leaf removal or the use of botryticides”
Claim · model-written summary
Leaf removal can be recommended as a basic measure in grape management
- Taxon
- wine grapesVitis viniferae0
- Outcome
- leaf removale5
- Qualifier
- as a basic measuree5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e5“Based on its positive effect on cluster structure and microclimate, leaf removal can be recommended as a basic measure that can be further combined with an application of botryticides or gibberellic acid”
Claim · model-written summary
Leaf removal had a positive effect on cluster structure and microclimate
- Taxon
- wine grapesVitis viniferae0
- Outcome
- cluster structure and microclimatee5
- Qualifier
- positive effecte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e5“Based on its positive effect on cluster structure and microclimate, leaf removal can be recommended as a basic measure that can be further combined with an application of botryticides or gibberellic acid”
Claim · model-written summary
Combining two measures prolongs the ripening period and may improve wine quality
- Taxon
- wine grapesVitis viniferae0
- Outcome
- prolong the ripening periode6
- Qualifier
- improve wine qualitye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the control of grey mold, caused by Botrytis cinerea, on wine grapes”
e6“All the tested strategies combining two measures have shown their potential to prolong the ripening period and therewith to improve wine quality”
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See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.