September 29, 2014 Leave a comment
Pecan scab, caused by the fungus Fusicladium effusum, is a major yield-limiting disease of pecan (Carya illinoinensis). Planting varieties with some resistance to the disease is the most practical way to avoid losses from pecan scab, but the scab fungus can change over time to overcome host resistance. The use of chemical fungicides is another widely used method of prevention and control. However, increasing resistance of the scab fungus to fungicides, coupled with greater awareness of the environmental impact of chemicals, is prompting farmers to consider other management options.