COMMUNITY STUDIES 



359 



few shovelfuls of soil around the trunk after the material is applied. 

 Ethylene dichloride stock emulsion can be bought ready for dilution 

 according to the manufacturer's directions. 



TABLE 44 



Ethylene Dichloride Stock Emulsion Dilutions 



Quantity of Water of Stock Emulsions to Use to Get 10 Gallons of 

 Diluted Emulsion at the Strength Used 











Dosage of 







50% 



Strength of 



Diluted 



Age and Size of Trees 



Water 



Stock 



Diluted 



Emulsion 







Emulsion 



Emulsion 



for Each 











Tree 









Percent 



Pint 



6 years and older, average 











and larger size 



5 



5 



25 





6 years and older, small. . 



6 



4 



20 





4 and 5 years 



6 



4 



20 





3 years 



7 



3 



15 







7 



3 



15 





1 year 



sy2 



IV2 



7J^ 



H 



COMMUNITY STUDIES 



1. Visit several growers of each tree fruit of commercial importance 

 in the section. Determine: 



(a) The acreage and varieties. 



(b) Injurious insects and diseases for which control measures 



are employed. 



(c) The materials used and proportions. 

 {d) Cost of materials. 



(e) Time, number, and cost of applications. 

 (/) Method of application. 



{g) Acreage or number of trees and age of trees treated per 

 day or hour. 



How much of this time is spent actually in applying the mate- 

 rials to the trees? 



