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PREFACE 



Some damage is done by some pest somewhere every year, causing 

 some loss to individual farmers. Fortunately, we have been free so far 

 from pests damaging very large areas in any one year, and it is confidently 

 hoped that this will always be the case in the territory served by this Com- 

 pany. Nevertheless, it seems wise to have on hand all the information 

 necessary to enable growers to apply proper measures in case of emergency. 



There are available a number of bulletins and books published by the 

 Department of Agriculture, Agricultural Colleges and others, dealing with 

 insect pests damaging to sugar beets, but it has been thought of interest 

 and value to beet growers to have this information presented in one book 

 and with due regard to local conditions. 



While it is hoped that this Bulletin will be of valuable assistance to 

 the grower of sugar beets by presenting the best known methods of pre- 

 venting injury and controlling insects which damage this crop, it seems 

 desirable to impress upon him the fact that there is no magical method, no 

 patent medicine, which can be quickly and easily applied. 



Good farming, as taught by local experience, practiced con- 

 sistently every year, will produce bigger yields of beets and min- 

 imize the damage done by insects or beet diseases. 



For the benefit of those wishing to study the subject more completely, 

 scientific names of insects, other invertebrate animals, and plants discussed, 

 have been given in the Appendix, pages 138 to 146, together with credit 

 for determination. Free use has been made of the literature of beet insects 

 and credit given where it has been quoted. 



This Bulletin has been prepared by Mr. A. C. Maxson, Entomologist 

 in charge of the Company's Experimental Farm at Longmont, Colorado. 



Credit is due Miss Caroline M. Preston for reproducing the insects 

 for the colored plates. 



THE GREAT WESTERN SUGAR COMPANY 



