Abstract
Abstract Insecticides were applied to 35-yr-old 'Jonathon' standard trees in unreplicated blocks of approximately 3/4 acre, with about 30 trees in each. Applications were made with a Bean C-336 CP sprayer, which traveled at 4.03 km/h and delivered 250 gal/acre. Dates of application were 1 Jul (4th cover), 13 Jul (5th cover), 24 Jul (6th cover), 6 Aug (7th cover), 19 Aug (8th cover), 1 Sep (9th cover), and 11 Sep (10th cover) for all materials except TD 2207 which, due to lack of material, was applied only up to 8 Aug on the spray program above and was evaluated on 24 Aug. All other treatments were evaluated on 16 Sep. The fungicide program consisted of Difolitan 80DF (3 lb/acre) on 16 Apr (green tip). Vanguard on 19 May (petal fall), and Cyprex 65W in all 7 maggot control applications as listed above. Treatments were evaluated by randomly picking 100 fruit from each of 4 centrally located trees in each block for a total of 400 apples per treatment. The apples were examined for AM injury. Ovipositional marks per apple were averaged for each treatment. Percent damaged fruit is also reported.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
