Walnut blight symptoms - Cost 873
Walnut blight symptoms - Cost 873
Walnut blight symptoms - Cost 873
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Questions<br />
WB Symptoms assessment:<br />
• Unusual <strong>symptoms</strong> <br />
Climate:<br />
• Leaf wetness ; thermal amplitude ; sunshine duration... need to be tested<br />
Xaj Epidemiology and fungus:<br />
• Fungus = secondary contamination <br />
• Why do we have no fungus and Xaj in more than 50 % of necrosis <br />
Soil water supply:<br />
• Which water pressure threshold to define tree stress (with Watermark® probes) <br />
Phenolic compounds:<br />
• Period of study = too short. Need to do it during the whole season,<br />
• Are flavonoids and HCA the good phenolic family to test / WB <br />
• Correlation between phenolic contains in leaves and fruits <br />
• Do Dualex® measures fit to walnut trees <br />
COST <strong>873</strong> – <strong>Cost</strong>iera 2009 - Italy