-14- 



Table 3. Cost benefit analysis of insect and mite results in 16 IPM 

 and 9 check commercial apple blocks in Massachusetts, 1979. 



Observation 



Orchard: 



IPM 



check 



Difference IPM 



vs . check : 

 Difference (I) 



Average number 

 spray dates 

 per acre 



Average number 

 dosage equivalents for'^ 

 Insecticides 



Aphicides 



Miticides 



Average cost/acre 

 spray materials for: 

 Insecticides 



Aphicides 



Miticides 



Spray applications^ 



Average % of 

 insect injur/ 



Average value per 

 acre of fruit loss 

 due to insect injury 



Average net benefit 

 per acre from IPM 



w 



6.0 



3.64 



$90.01 



11.0 



4.73 



$130.47 



■5.0 



- 1.09 



-$40.46 

 +$122.83 



(46) 



(23) 



p. ■ -. . actual pesticide rate/100 gal. 



Dosage equivalent = ^^ ^ t— 3 " . . , g^ ,, „„ t- 



* ^ NY recommended pesticide rate/100 gal. 



r 



Based on 15 min. time to spray 1 acre, $5.00/hour labor cost and $2.00/acre/ 



application for fuel and oil. 



Does not include injury from sooty mold, white apple leafhopper and woolly apple 

 aphids which could be removed by washing fruit. 



Based on average values as of Sept. 30: U.S. Fancy fruit @ $10.50/bu., U.S. #1 

 fruit @ $7.00/bu., Cull fruit @ $2.00/bu. and average yields of 550 bu./acre. 



w 



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