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About pbrannen

Phil Brannen is a Professor in the Plant Pathology Department at the University of Georgia. He attended the University of Georgia for his undergraduate degree in Plant Protection and Pest Management, where he also received an M.S. in Plant Pathology, followed by a Ph.D. in Plant Pathology from Auburn University. He has extensive experience with disease management programs in numerous cropping systems. He serves as the extension fruit pathologist for Georgia – conducting research and technology transfer for multiple fruit commodities. His efforts are directed towards developing IPM practices to solve disease issues and technology transfer of disease-management methods to commercial fruit producers. He also teaches the graduate level Field Pathology Course, the History of Plant Diseases and their Impact on Human Societies Course, team-teaches the IPM Course, coordinates the Viticulture and Enology in the Mediterranean Region Course (Cortona, Italy), and guest lectures in numerous other courses throughout the year.

Abound and Apples — Phytotoxicity Issues

Some of our peach producers also produce apples.  Abound fungicide has significant phyto issues on apples (see below from the label).  With my previous post on blossom blight, you can substitute Merivon or Pristine for Abound when controlling early-season green fruit rot — if you want to also use the…
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Blossom Blight and Suggested Spray Plans

As many of you know, blossom blight is prevalent this year.  It is not present on all peach varieties to the same degree, but many varieties are inundated with Monilinia fructicola (brown rot) spores on the blooms, many of which are gummed and forming cankers.  In some cases, the cankers…
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Phony Peach

Based on observations at the Byron USDA station (pathology blocks) and Fort Valley State (Jeff Cook orchards), phony peach appears to be increasing in importance (see photos below; short, squat trees are phony peach trees).  I suspect this could be related to two really warm consecutive winters, increased vector numbers…
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Hurricanes and Phytophthora Damage

Unfortunately, it does look like Georgia will experience pretty high winds from hurricane Irma as it passes north. In addition to the direct damage to trees, tree decline and death over time can be a direct result of hurricanes and tropical storms. High winds whip young trees from side-to-side like large…
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Copper Formulations for Peach and Cover Sprays

From what I have been told, there may be a shortage of oxytetracycline products this year, due to the use of this antibiotic in Florida for potential control of citrus greening.  All of this is occurring at a time in which we can expect ideal conditions for bacterial spot development…
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