

IHOtES 



HH. EARLS S. CARPENTER 



EXT. SPEC. Di VISUAL EDUCATION 



EXTEJISION SERVICS 



SOUTH. COLLEGS^ .1^2 4S 



July 10, 1947 



Prepared by the Fruit Program Comioittee of the Extension Service 

 w'. II. Thies, Extension Horticulturist 



Contents 



Factors Viliich Influence the Set of Mcintosh Apples 



Do You Knov/? 



Do Strawberries Run Out? 



Disease Free plants in Massachusetts 



I'Jhere Does Brovm Rot Come From? 



Control of the Peach Tree Borer Y/ith DDT 



FACTORS WHICH II\[FLUENCE THE SET OF MCINTOSH APPLES 



The prospects for a crop of Mcintosh apples in Massachusetts 

 orchards range from extremely light to extremely heavy, Thers is so much 

 variation that growers are Vv'ondering which factors are most responsible. 

 The process by means of which blossoms are transformed into young fruits 

 on a Mcintosh tree is a complicated one. 



It is a well knovm fact that the setting of fruit involves 

 a transfer of suitable pollen to a normal blossom and that favorable 

 weather is essential. If a tree shows a "snov/ball bloom" and then sets 

 only a few apples, it is obvious that something must have been lacking. 

 And in a season when frosts occur during April and May grov;ers commonly 

 blame a light crop on lov; temperatures. But that is only one part of 

 a complex situation. Seven factors vdll be considered in this discussion. 



Issued by the Extension Service in furtherance of Acts of May 8 and June 

 30, 1914, Willard A. Munson, Director, University of Massachusetts, United 

 States Department of Agriculture and County Extension Services cooperating, 



