Pierce's disease of grapevine
from early to midsummer. The necrotic area spreads over the leaf from the margin and is marked by a chlorotic band. In the beginning, only a few leaves [...] and tylose, a glue-like substance, in the vessels. The bacteria, gum and tyloses block the vessels, causing the plants to wilt. Transport to different plant [...] down the spread both within this crop as well as from this crop to other crops. How to prevent Pierce's disease of grapevine Control vectors by using netting