Grapevine disease symptoms in fall Pierce’s disease The first sign of Pierces disease infection is drying or “scorching” of leaves. This usually develops by mid or late summer. Initially, scorching of leaves may be observed as yellow or red color along the leaf margins. Leaves continue to dry from the edges in concentric zones. Different varieties …
From the Lab
Spring Time Symptoms at the Vineyard
Many of the diseases or problems ailing the grapevines can be spotted in spring after the vines start growing. Infected vines commonly show delayed bud break, or develop shorter shoots or abnormal leaves. Reasons for these symptoms, however, can be many, and a more in depth analysis provided by a diagnostic laboratory is often needed …