BAITED STICKY BOARD TRAPS FOR TIMING APPLE MAGGOT EMERGENCE 



H. E. Wave 



Department of Entomology 



and Plant Pathology 



A baited sticky board trap suitable for use in determing apple mag- 

 got fly emergence has been described by George Still in the January-Febru- 

 ary, 1964, Ohio Farm and Home Research . Twenty-eight percent ammonia* was 

 used as the attractant. Ordinary household ammonia (4%) can be used also 

 but this only lasts for a day and has to be replaced every day. The strong- 

 er ammonia lasts 3-4 days without losing its attractancy. 



Figure 1. Sticky board trap with bait 

 container in place. 



The trap is made of 1/8-inch masonite 5 x 6 inches square A 3/8-inch 

 diameter hole is located in the center of the square ^° f ^^^^^e ammonxa 

 vanors to attract flies on the opposite side of the panel. Both sides ot jn^ 

 nanelare painted with 2 coats of yellow enamel. The paint gives the panel a 

 M^ht baelground for observing trapped flies and also provides a smooth surface 

 for applying the sticky material. 



