Eutypa Dieback

Eutypa lata

2 host plants · Fungal

Last updated

Data Maturity Baseline

This profile contains verified disease data from extension databases. Regional field notes and expert review are in progress.

Eutypa dieback causes branch death and cankers on grapevines and fruit trees. You see sunken cankers and wilting of tissues beyond infection. The disease enters through pruning wounds. Prune in dry season and maintain good wound closure.

Start with cultural controls: remove infected tissue, improve drainage and air circulation, and keep foliage dry when possible. Eutypa Dieback responds best to early intervention, so scout regularly during the growing season and act at the first sign of symptoms. Chemical controls exist for severe cases but work best as preventive treatments before infection takes hold.

Quick Reference

Agent Type
fungal
Causal Agent
Eutypa lata
Host Plants
2
Favorable Conditions
Ascospore release from fruiting bodies during rain in late winter/early sprin...

Management

Vulnerability Window

Pruning season (dormant through early growth, BBCH 97–09). Wound susceptibility peaks within 1 week of cutting.

What Triggers Infection

Ascospore release from fruiting bodies during rain in late winter/early spring. Fresh pruning wounds (within 1 week of cutting) are the primary infection sites.

Cultural Controls

  • Prune only during dry periods
  • Delay pruning until spring or summer
  • Avoid pruning wounds when possible
  • Remove and destroy infected wood

Host Plants (2)