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David from Tampa, Fl writes

Can propiconazole 14.3 be injected into palm trees for listed fungal control?

Answer:

Trees in advanced stages of disease development may not respond to treatment. Uninfected trees will generally absorb the full amount of Propiconazole 14.3 water solution within 2 hours when injected under pressure. Consider trees exhibiting specific symptoms or those symptomless trees immediately adjacent to a diseased tree infected. Symptomless trees separated by a primary plow line from diseased trees may be at less risk of infection. Infected trees will absorb the material more slowly due to the vascular plugging caused by the disease. If the Propiconazole 14.3 water solution is not absorbed within 24 hours, the tree is considered high risk and has a poor chance of survival. If your palm trees have Rusts, Pink & Gray Snowmolds, Gray Leaf Spot, Zoysia Patch, Dollar Spot, Summer Patch, Anthracnose, Leaf Spot, Brown Patch, Powdery Mildew then Propiconazole 14.3 could be applied. Please conact your local cooperative extension Master Gardener to confirm the fungus.

Answer last updated on: 02/27/2020

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