Multifactorial analysis of disease pressure and pesticide use in viticulture: reduction possibilities in South-western Europe
Résumé
The indicators used in this study allow the evaluation of the pest pressure and pesticide use in a complex system in three regions. In 2017 we were able to see different patterns in pest type and pressure and in pesticide use in the different regions, significant relationships between pests and treatments. The variability in the relationships pest/treatments offers options for the reduction in pesticide use from the basis of the current practices. There is complexity in the factors that affect not only to wine quality, but also to yield. A new multipathogen approach in the field vs wine quality is tested. The multifactorial analysis will allow to evaluate the reduction in pesticide use in relation with the cost analysis and consumer preferences. 2018 has been a rainy spring and a rainy and hot summer, with a very different preliminary AIDB and IFT, which will provide a different range of results.
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