8o 



FUMIGATION METHODS 



judgment regarding the dimensions of the trees to be 

 fumigated, a stick marked off in feet will be of assist- 

 ance. 



QUANTITY OF CHEMICALS TO DESTROY BI^ACK SCAI,E ON 

 CITRUS TREES 



The proportions of chemicals used for citrus trees 

 affected with red, brown, or purple scale are given in 

 the following table. The same quantity may be used 

 for deciduous trees infested with San Jose or black 

 scale. 



CHEMICALS FOR RED, BROWN, AND PURPLE SCAI.E 



