P&PDL Picture of the Week for
November 30, 2009

Plan Ahead to Control Peach Leaf Curl and Plum Pockets

Gail Ruhl, Senior Plant Disease Diagnostician, Department of Botany & Plant Pathology, Purdue University

NOW is the time to think about providing a protective fungicide spray to your peach and plum trees if you had a problem this past season with peach leaf curl or plum pockets.

The symptoms of this fungal disease caused by Taphrina deformans are very distinctive and you definitely would have recognized the presence of this fungal disease if it was present in your fruit trees this past growing season.   Portions of the leaves would have “ballooned” out and these distorted portions are often colored a bright pink to red and may be thickened, puckered, and curled.  The amount of leaf drop and fruit infection depends on the severity of the infection.

To prevent this disease from occurring next year, one spray of appropriate fungicide during the dormant season, before the buds swell, should suffice. If the infection was extremely severe, it may be wise to apply a fungicide spray now, during late fall as well as in early spring, before bud swell.  The choice of fungicides for dormant sprays include liquid lime-sulfur and chlorothalonil.

More info:

Peach Leaf Curl Control Program Begins Now
By John Hartman, University of Kentucky

 

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Peach leaf curl

Peach leaf curl

Peach leaf curl

Peach leaf curl

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service