26 INSECTS INJURIOUS TO STAPLE CROPS. 



Drainage. 



The Kice-weevil can be largely controlled by proper 

 drainage, and the Corn Bill-bugs are usually injurious 

 only on land adjacent to or recently reclaimed from swamp 

 land, and disappear with the introduction of proper 

 drainage. 



Fertilizers. 



In general, land covered with barnyard manure presents 

 more favorable conditions for the development of insects 

 than that fertilized with luineral fertilizers, sometimes 

 furnishing them food and always affording a good shelter 

 for the cold of winter. On the other hand, it is claimed 

 that kainit, lime, and nitrate of soda are often of consider- 

 able value in controlling, driving out, or preventing the 

 attacks of insects. A liberal application of fertilizers in 

 any form will always be of great value in preventing loss 

 from root-feeding insects by enabling the plant to outgrow 

 the injury and mature fruit in spite of it. 



Poultry. 



A flock of chickens or turkeys following the plow will 

 pick up a great many White Grubs and Cutworms and can 

 readily be trained to this — for them — rather pleasant task. 

 In many tobacco-growing sections large flocks of turkeys 

 are raised especially for destroying the Tobacco Horn- 

 worm and are slowly driven through the tobacco-fields 

 several times a day. 



Trap Crops. 



Doubtless the reason that trap crops are not more in 

 favor Y/ith the farmer is because their successful use 



