48 INSECTS INJURIOUS TO VEGETABLES 



perienced persons apply for information after the principal 

 damage is done, and before an answer in regard to remedial 

 treatment can be received it is too late to apply remedies. 

 In the treatment of insects which may always be expected, for 

 example the striped cucumber beetle, preparation should be 

 made before the appearance of the pest. 



8. In the case of many insects it is visually necessary to 

 apply remedies more than once, sometimes three or four times, 

 according to the number of generations of the insects, and 

 whether severe rains have intervened to wash away applications 

 before the insects have fed upon them. 



9. If injury is severe it is often desirable to apply remedies 

 for other insects and diseases which may be present, as other- 

 wise the crop may be ruined, though the primary cause be re- 

 moved. Fertilizers are often advisable to stimulate plants and 

 enable the production of a crop in spite of insect injury. 



ID. Clean methods of farming are of more value in preventing 

 injury than any other method that can be named, and if it were 

 more generally observed insect injury would soon be very mate- 

 rially reduced. 



11. The cooperation of one's immediate neighbors is very 

 desirable in the treatment of many insects, particularly tliose 

 which are not free-flying. 



12. The timely application of a remedy acts as a preventive. 



