1 64 Insects and Sprays 



use a poisonous mixture on foliage which is to be 

 eaten by human beings, or cattle, and do not apply 

 a poison to the flowers or fruit of the vegetables. 

 Never use stale spraying solutions. Many solu- 

 tions lose their strength shortly after being exposed 

 to the air and your time and solution may be 

 entirely wasted. For this reason, it is perhaps 

 better to make up your solutions just as you need 

 them. Recipes for the various solutions are given 

 below and on the following pages. 



All of the vegetable crops are subject to attacks 

 of insects and diseases. Plants should be examined 

 almost every day to see if the plants are dying 

 or if insects have attacked them. Insects injuri- 

 ous to vegetables are divided into two classes, 

 those which eat up the plant and those which 

 suck the sap and cause the plant to die. The eating 

 insect leaves the plant full of holes. Most of this 

 variety can be controlled by spraying or by dusting 

 poison on the leaves. Paris Green and Ar senate of 

 lead are recommended for killing eating insects 

 but these poisons are dangerous and must be 

 handled with care. They should not be put on 

 any vegetable that cannot be thoroughly washed 

 before using and should not be used unless the 

 consumer is to be aware of the fact of their use. 



