En matière de tournesol, l'année 2000 a été relativement calme sur le plan phytosanitaire et les rendements sont corrects.
Le mildiou régresse grâce au développement des variétés résistantes. Le phomopsis, favorisé par le climat, se manifeste de nouveau mais sans trop de dégâts grâce là aussi aux variétés résistantes. Les autres maladies sont plus discrètes, notamment le sclérotinia grâce encore aux résistances variétales.
Le désherbage a été facile. ? noter cependant l'incidence de l'ambroisie en Rhône-Alpes, l'aethuse et les chardons.
Les seuls ravageurs notables en 2000 sont les taupins, présents dans le Sud-Ouest mais sans exprimer de nuisibilité. As far as sunflower crops are concerned, the year 2000 was relatively calm on the plant protection front, and yields were perfectly acceptable. Downy mildew showed a clear downward trend, thanks to the development of resistant varieties. Phomopsis, owing to favourable climatic conditions, once again reared its head but did not cause excessive damage, thanks once again to the resistant varieties. Other diseases did not really give much cause for concern; resistant varieties once again played a role in reducing the impact of sclerotinia. Weed control went off without a hitch. Mention should however be made of the presence of ragweed in the Rhône-Alpes region, as well as aethuse and thistles. The only pests which gave cause for concern in 2000 were wireworms, present in the South-West, but causing relatively little damage.
