Kentucky has approximately 1000 of acres in apple production in the state. Based on a survey by a University of Kentucky Fruit and Vegetable Crops Extension Professor, in recent years yields for semi-dwarf apples have ranged from 250 to 750 bu/A with an average yield of 448 bu/A. He found that dwarf apples yields have ranged from 195 bu/A (in a year with devastating frost) to 825 bu/A with an average of 550 bu/A (data from J. Strang, Univ of KY). Nearly 7 million pounds of apples were harvested in 2008, the most recent year for which data are available (Kentucky Ag Statistics). Farmers have been steadily earning more per pound of apples produced each year. For example, farmers earned $0.78 per pound in 2008, $0.85 per pound in 2009 and $1.04 per pound in 2011 (J. Strang). There is a high demand for locally-produced apples in Kentucky which are sold locally to restaurants and directly to consumers at roadside stands, farmer’s markets, and at Kentucky’s more than 25 U-Pick apple orchards.

Several insect pests would be very damaging to the apple industry in Kentucky if they became established in the state. Many insects can be surveyed using pheromone trapping. The use of these traps will allow for early detection and prevention of pest establishment in the state. We will survey for the following moth pests: Summer Fruit Tortrix, Light Brown Apple Moth, Variegated Golden Tortrix, European Grapevine Moth, Plum Fruit Moth, and Cherry Bark Tortrix.

European Cherry Fruit Fly was recently confirmed in Ontario and is of concern to the United States; therefore, we will set fruit fly traps in orchards that have an appropriate host (cherry trees or honeysuckle). 

We will obtain permission from orchard owners to place pheromone traps in their fields and we estimate that 8-10 orchards will participate in the survey although the number of orchards surveyed depends on funding.

Light Brown Apple Moth

Light Brown Apple Moth


Summer Fruit Tortrix

Summer Fruit Tortrix


Plum Fruit Moth

Plum Fruit Moth


European Grapevine Moth

European Grapevine Moth


Cherry Bark Tortrix

Cherry Bark Tortrix