CHAPTER IX 



PREVENTION AND CONTROL 



THE discussion in this and the following chapter must 

 necessarily be very general. Success in treatment for 

 prevention or eradication of any pest depends largely 

 upon an INTELLIGENT, PROGRESSIVE, PUBLIC - SPIRITED 

 POPULATION. Success depends not only on the intelli- 

 gence and progressiveness of a few individuals, but upon 

 the patriotism of the populace. Although the individual 

 working a] one can accomplish enough to amply repay for 

 the time, labour, and money expended in much of this 

 work, the greatest good to the largest number will be 

 accomplished by co-operation co-operative work not 

 only in the treatments for these pests, but in securing 

 the enactment and enforcement of necessary laws. 



Experiment Stations. All progressive agricultural 

 countries are now provided with agricultural experi- 

 ment stations, for the study of all problems of 

 agriculture in which the country is interested. Experi- 

 mental work can usually be carried on in these stations 

 to much better advantage than by the individual 

 agriculturist. However, co-operative work between 

 the stations and the people is always desirable, and 

 frequently necessary, especially in countries where the 

 environmental conditions vary. The progressive agri- 

 culturist will find it greatly to his advantage to keep 

 in close touch with the experiment station of the 

 country in which he is working. 



Commonness and Destructiveness of Plant Diseases. 

 It is the prevailing opinion that plant diseases are 



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