State Crop Pest Commission 



Of 



CIRCULAR No. 4. December, 1905. 



The Circulars of the State Crop Pest CotnmissioD are sent free of charge to all 

 farmers and fruit growers of Louisiana who make application therefor. 



THE SAN JOSE SCALE, A DESTRUCTIVE INSECT ENEMY OF 

 DECIDUOUS FRUIT TREES. 



Its Nature and Habits, How to Detect It and How to Control It. 



BY WILMON NEWELL. 



The advent of the boll weevil in Louisiana has made it ex- 

 pedient for the general farmer to give consideration to the pro- 

 duction of crops other than cotton. While the damage from th 

 t oil weevil has not thus far been seriously felt in more than two 

 or three very limited areas in Louisiana, still it is destined 

 within a few years to render impossible profitable cotton culture 

 upon as large a scale as formerly, and at the present time it does 

 not appear possible to permanently prevent this insect from 

 crossing the entire State. While the proper administration of 

 sensible and reasonable quarantine measures will in all 

 probability prevent the weevil from being transported long dis- 

 tances in shipments of cotton seed and .hulls, thereby causing 

 isolated infestations to appear many miles ahead of the line of 

 gradually advancing infestation, the migratory habits of the 

 weevil will render futile any attempt to permanently confine the 

 area of infestation to its present limits. In the light of present 

 knowledge, ultimate boll weevil infestation of the entire cotton- 

 producing area of Louisiana appears inevitable. 



The farmer who shall have successfully adapted himself and 

 hk methods to a diversified system of agriculture by the time the 



