Grape
Grape leafhoppers spend winter in plant debris around the vineyard until springtime when temperatures increase significantly. Grape leafhoppers feed on wild weeds shortly before they swarm into vineyards after bud break and as new green foliage appears.
In general, nymphs and adults are similar and both are sap-sucking insects that pierce into the soft tissues of plants. Grape leafhoppers feeding can lead to a wide spectrum of symptoms that vary from one variety to another, such as tiny yellow or white dots on leaves, curling or folding of leaves, yellowing of leaf edges, and even decreased rates of plant growth. It is important to note that as the season progresses, late-ripening varieties are more susceptible to grape leafhoppers.
Many leafhopper species can transmit important plant diseases such as Pierce’s disease (xylella fastidiosa) and different phytoplasmas comprising the “Grapevine Yellows” complex, such as bois noir (blackwood disease) and flavescence dorée. It is difficult to differentiate between leafhopper species with eyesight.
Calendrier: Il est plus facile et plus rentable de surmonter les infestations au cours des premières étapes. Surveillez régulièrement le champ et recherchez les signes ci-dessus.
Assainissement: Gardez l’environnement proche des cultures en éliminant les mauvaises herbes, les débris de plantes, les parties endommagées, la croissance indésirable des plantes et les plantes à proximité qui ne sont ni cultivées ni protégées.
Les produits utilisés dans une ou plusieurs régions du monde peuvent contenir les ingrédients suivants :
Flonicamid, buprofezine, sulfoxaflore, imidaclopride, thiaméthoxame, clothianidine, bifenthrine, deltametrin, chlorpyrifos, et diméthoate.
huile de neem et huile minérale.
*Names marked in red are considered to be highly poisonous to beneficial insects.
*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.