WEEDS AND THEIR ERADICATION liit 



Pigv/eed. — The seeds of pigweed are small, shiny and 

 black. They are half the size and about the shape of a 

 common pin head. They are commonly found in grain 

 and in grass seed. See Figure 56. 



Quack Grass. — Seeds are slender, light in weight, 

 somewhat the shape of oats, but only about one half as 

 long. They are green or light yellow in color. Some- 

 times two or more seeds are joined together. They may 

 be found in grain or in grass seed, especially in bromus. 

 Quack grass seed is a little heavier, smoother, and more 

 yellowish in color than bromus seed. 



We suggest that our readers examine carefully several 

 samples of grass seed found in the neighborhood; first, to 

 become familiar with common grass seeds, as red and alsike 

 clover, timothy, alfalfa, and bromus; and also to learn to 

 identify the weed seeds mentioned above, and to readily 

 observe and know them when seen in a sample of grass seed. 

 Questions: 



1. What is a very common way of getting weedsi on a farm? 



2. Why is it easier to get bad weed seeds in grass seed than in 

 seed grain? 



3. For what reason is a hay crop regarded as a cleaning crop? 

 Arithmetic: 



1. A bushel of timothy seed weighs 45 lbs. What is it worth at 

 5c. per lb.? 



2. A bushel of clover seed weighs 60 lbs. What is it worth at 

 15c. per lb.? 



3. There are 32 quarts in a bushel. Clover seed weighs 60 lbs. 

 per bushel. What does one quart weigh? Timothy seed weighs 45 

 lbs. per bushel. What does one quart weigh? 



4. If a farmer seeded 10 acres of land with grass seed containing 

 10% weed seeds, how much land would he sow to weeds? 



CLASSES OF WEEDS 



Habits of Weeds. — If the habits of weeds are studied, 

 it will be found that all weeds may be placed under three 

 classes: annuals, those that live but one year; biennials, 

 those that live two years; and perennials, those that live 

 from year to year. 



Annual weeds are those weeds that start from seed, 

 make their full growth, produce seed, and die in one year. 

 In this class we find such common weeds as pigeon grass, 

 lamb's quarter, wild oats, wild barley, mustard, corn cockle, 

 wild buckwheat, French weed, ragweed, etc 



