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Agronomy and Viticulture Experimentation Unit, INRA Research Centre of Colmar. Grape harvest.. © INRA, MAITRE Christophe

Resistant grape varieties rising to the challenge

What are resistant grape varieties? In what context can these sustainable varieties meet environmental and economic challenges? The 1st issue in the Science & Policy series provides key elements to better understand the subject from a scientific and regulatory point of view.

The French national plan to reduce the use of pesticides aims for a 50% reduction in the use of chemical plant protection products (PPPs) by 2025 to protect the environment and public health. Alongside governmental policy, French public research in agricultural sciences focuses on reducing PPP use to improve performance of the agricultural sector in economic, environmental, health and social terms. The winegrowing sector is of particular concern because French vineyards account for 20% of total PPP annual uses while covering 3% of arable land in France. In the same vein, the heavy reliance on copper sulphate in organic systems is raising concerns because of its consequences for the environment and health. Both chemical fungicides and copper sulphate are sprayed to control fungal pathogens, namely powdery mildew and downy mildew. Resistant grape varieties are a perfect example of INRA's commitment to sustainable agriculture presented in its orientation document #INRA2025.

"The first results of using mildew-resistant grape varieties show great potential (90%) for reducing the use of pesticides in agricultural systems and a possibly drastic reduction in the use of copper in organic farming systems". In order to better understand this alternative, we invite you to read the document below.

Science and Policy: mildiew-resistant grape varieties (PDF, 3,6 MO)

Contact(s)
Contact :
Claire Brennetot, Advisor to the President for parliamentary and institutional relations
Associated Division(s):
Plant Health and Environment, Plant Biology and Breeding
Associated Centre(s):
Occitanie-Montpellier, Grand Est - Colmar, Nouvelle-Aquitaine-Bordeaux