Growers utilizing alternate-middle spraying realized 

 a net benefit of $81.64 per acre with regards to insects and 

 mites, and $77.69 for diseases, or a total average net bene- 

 fit of $159.33 per acre. 



We believe that our 1979 results, as well as those from 1978, 

 indicate the potential usefulness of alternate-middle spray- 

 ing, perhaps most advantageously employed when in combination 

 with intensive IPM weekly scouting and grower advisement. (See 

 Fruit Notes 44(6) : 6-8, 9-14.) 



