The Bulletin. 



21 



Can Not Exterminate Scale —No one need expect to ''exterminate" 

 or "get rid of" the San Jose Scale when it once becomes firmly estab- 

 lished in his orchard, no matter what measures he uses. It is here to 

 stay, and our growers need to recognize it as a permanent pest, to be 

 fought regularly and intelligently. If this be done there is no difficulty 

 in keeping it in good control; but the man who starts in with the idea 

 that he can exterminate it is apt to merely deceive himself. We need 





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Fig. 7.— Peach tree'cut back to suib two years before, now making new top and filled 



with bloom. (Photo by Sherman.) 



to look at this thing in the light of common-sense experience. We don't 

 expect to "exterminate" potato beetles, but the means of control are such 

 that no potato grower need lose a crop from them. We do not expect to 

 "exterminate" the flies in our houses, but the means of control enable 

 us to reduce their number and control them. ISTo insect pest which has 

 so many means of spread has ever been absolutely exterminated when 

 once thoroughly established. It is a matter of control, not of extermi- 

 nation. 



OUR POLICY IN REGARD TO SAN JOSE SCALE. 



Many persons think that the State Department of Agriculture makes 

 a practice of destroying all orchards that are found to be infested with 

 San Jose Scale, and for this reason some people hesitate to let us know 

 that they suspect the scale is in the orchards, or they hesitate to give 

 the names and addresses of their neighbors and friends whose orchards 

 may be infested. 



