FINAL REPORT FOR 1999-2000 TITLE: Management of Leafrollers in Apple PRINCIPAL Alan L. Knight, Yakima Agricultural Research Laboratory, ARS INVESTIGATORS: CO-INVESTIGATORS: Steve Cockfield, Scientific Methods FUNDING HISTORY: Funding in 1995-1996…

…for feeding attractant chemicals. These also were then used on apple trees in an attempt to repel codling moths. Field cage assays lasted one week, at which point the fruit…

…was completely darkened, this may have been simply a phytotoxic reaction to an excessive dose. Clearly, some anomalies warrant further investigation. In 1996, 10 ‘Delicious’ and ‘Granny Smith’ apples and…