WEEDS AND THEIR CONTROL 



503 



The farmer should be able to answer the following questions 

 before effective work can be done in the control and eradication 

 of weeds : 



1. Is the plant an annual? This type of plant comes from 

 seed in the spring, grows, bears flower and seed, and dies in one 

 year. One of the most effective methods of control is to destroy 

 the plant before the seed ripens. 



Fig. 237. — Two stages of growth of the wild oats seedling 

 (natural size) ; also enlarged and natural sized draw- 

 ings of the seed. 



