Abstract
Abstract Entomosporium leaf spot of photinia (Photinia × fraseri Dress) was epidemic throughout most of Georgia and much of the Southeast during the spring of 1991. It has been endemic for many years. The relatively high minimum temperatures recorded in December–March 1990–91 in concert with 52 days of rain during this period were conducive to disease development. Currently recommended fungicides are effective for control if they are applied on a weekly basis. Newer fungicides were effective against the fungus in laboratory culture, but labels are not approved for application to landscape or nursery plants. Spray nozzle types (flat or full cone) delivering 5 to 7 ml per second of fungicide were as effective for disease control as spray nozzles delivering four to five times more volume.
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