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Union Necrosis and Decline

Tomato ringspot

12 host plants

Last updated

Data Coverage 3 of 6 dimensions
Causal Agent
Host Plants
Symptoms
Management
GDD Threshold
Regional Notes

Apple trees show unthrifty growth, abnormally high fruit set, and a dark necrotic line at the graft union when infected with tomato ringspot virus. The virus spreads via dagger nematodes in eastern North America and occasionally in other regions. Plant virus-tested trees in disease-free sites. Roguing young orchards prevents further spread.

Primary control is by planting virus-tested (and found to be free of all known viruses) trees and in sites that have no history of the disease.

Quick Reference

Causal Agent
Tomato ringspot
Host Plants
12

Management

Cultural Controls

  • Primary control is by planting virus-tested (and found to be free of all known viruses) trees and in sites that have no history of the disease.

Host Plants (12)