MONTANA STATE BOARD OF HORTICULTURE 



85 



ful on warm bright days, while the machine works best on cool morn- 

 ings and dark days. The wise plan would, therefore, seem to be to 

 use a combination of the two methods, using the one best suited to 

 the prevailing conditions. 



Figure 4. Pear orchard coiTipletely defoliated in Au.mi 



1p\ Kiasslioppe 



