Enter user name and password:


VitiSynth Full Entry

Reference: Using ontogenetic resistance of grapevine for fungicide reduction strategies
Key Statements


Resistance of grapevine against powdery mildew (Erysiphe necator) and downy mildew (Plasmopara viticola) increases during ontogenetic development of leaves and berries. The aim of this study was to determine whether the use of fungicides against both pathogens could be reduced during the last treatment before harvest (LTBH) by treating only the susceptible leaves of the vines in the upper half of the canopy. For this purpose, field trials were carried out under experimental or practical conditions in vineyards in southern Germany in eight different years. All plants were sprayed after a standard regimen until LTBH, performed at BBCH 77–79. LTBH was either performed on the whole canopy or limited to the upper half of the canopy excluding the fruit zone. For both pathogens, no differences were observed between the two treatments with regard to the disease severity on the grape clusters. Only in one out of eight years, an increased fruit disease incidence could be observed. As far as the disease severity of leaves is concerned, no differences were observed for downy mildew, and in the case of powdery mildew, significantly higher infestation was observed only in two out of eight years. Furthermore, the efficacy of different fungicides for LTBH was investigated in a 3-year experiment. Sole use of a copper fungicide for LTBH had no disadvantages against E. necator, compared to a treatment with synthetic fungicides. Taken together, LTBH at BBCH 77–79 can be limited to the upper canopy without risk to the health of the fruit.

Link to paper-


Partially indexed reference.

View Interactions

VitiSynth Review
Go Back


Publication Details

Published: 2022
Publication: European Journal of Plant Pathology
Issue: 2022 Online November 2022
Author: Bleyer K 2022

Brain food

Related Video

None for this Entry

Related Audio

None for this Entry

Discuss this Entry

No related discussions available.

Join Discussion

Latest Discussions
Special Report

Date: 19th April 2020
Synth:Growth stage:VS 4 Flowering:VS 4c Bud development:VS 4c.2 Differentiation of main axis of anlage into inflorescence rachis primordium or tendril primordium

The development of inflorescence primordia (IP) is clearly described i...Read more

Date: 16th February 2020
Synth:Guides:Data standards:Colour codes

I think it would be very useful if we have standard colour codes for e...Read more

Date: 29th October 2015
Reference:Journal:Weed Technology:2015:Online October 2015:Devkota P 2015:Influence of Spray Solution Temperature and Holding Duration on Weed Control with Premixed Glyphosate and Dicamba Formulation

Pesticides in general are chemical products, therefore the quality of ...Read more

List of sponsors.. Read more