Insects and Sprays 175 



can get at it. The army worms breed usually in 

 rank grass or over-fertilized fields. 



Wasps may be destroyed by placing a gallon 

 jug containing a quart of water near the nest. 

 The wasps will fly angrily at the jug; the hollow 

 sound of its buzzing echoing from the jug will make 

 it enter the latter and fall into the water. Wasps 

 call to each other, and where one goes the others 

 follow. Paris green distributed on minced meat 

 is poisonous to them, but this is a deadly poison 

 to humans as well and should be carefully handled. 



Spores and germs of diseases often are in the soil 

 when it is plowed under, so use the precaution of 

 raking up and burning all dead vines, etc. Rotation 

 is another means of checking the ravages of insects 

 and diseases. 



The standard remedy for San Jos scale is 

 lime-sulphur. If this cannot be procured at your 

 dealer's, slake 22 Ibs. of fresh lime, using just 

 enough water to cover the lime. Add 17 Ibs. of 

 sulphur which has been mixed to a paste with water. 

 Boil for an hour in 10 gallons of water, using an iron 

 vessel. Add enough water to make 50 gallons 

 and strain through wire netting. 



