5. 



We have noticed that growers tend to apply some information 

 from IPM blocks in the remainder of their orchards. A more dramatic 

 difference in fungicide usage can be noted in Table 2 where we also 

 included non-IPM commercial orchards in our comparisons. 



Table 2. 1980 spray record comparisons in Massachusetts. 



Types of orchards 



IPM Check Commercial 



Number of fungicide sprays 9.45 10.36 12.00 



Dosage equivalents 8.11 8.80 10.55 



Cost of fungicide per acre ($) 85.26 94.58 120.56 



IPM orchards had 21% fewer fungicide spray applications and 

 used 23% less material than other commercial non-IPM orchards. 

 This amounts to a $35.30 per acre savings. 



The results clearly show monetary savings for Integrated Pest 

 Management and the use of environmental and biological monitoring 

 for more efficient use of fungicides. It is realized, however, 

 that it is difficult to spray large acreages on an after- infection 

 or kickback program. New pesticides with extended kickback action 

 (up to 92 hours) are presently being used on an experimental basis 

 and might solve this problem in the future. We are also working on 

 a spray prediction program based on fungicide residue sampling on 

 apple foliage. This program may aid in the timing of fungicide 

 applications and help reduce fungicide applications. 



********** 



RESEARCH IN PROGRESS 



In January, 1981 the personnel who conduct pomological research 

 at the University of Massachusetts reviewed their projects with 

 members of the Massachusetts Fruit Growers' Association-University 

 of Massachusetts Fruit Advisory Committee. Perhaps our readers also 

 would like to know how the University of Massachusetts is attempting 

 to serve the fruit industry in Massachusetts through research. 

 Therefore, during the next several issues of FRUIT NOTES, we plan to 

 have the leader of each project write a brief report that will state 

 why the project was initiated and the major findings to date. The 

 reports will appear under the heading of RESEARCH IN PROGRESS. 



