CLOVER 37 



brown and the seeds are in the dough stage. The average 

 yield is about two bushels per acre, but by controlling the 

 insects the yield should be nearly doubled. 



NOTEBOOK QUESTIONS 



1. Why is Dr. Hopkin 's ' ' The Story of a King and Queen ' ' 

 so well applied to corn and clover? 



2. Describe the clover plants as to the nature of the roots, 

 stems, leaves, and flowers. 



3. What and how much plant-food does a ton of clover 

 hay require? 



4. Describe a crop rotation system where clover enters as 

 one crop. 



5. Where is clover seed sown ? How much seed is required 

 per acre ? What is the current price of the seed ? How may 

 we increase the production and yield of clover seed? 



6. When is clover hay usually cut ? Describe the methods 

 of harvesting and handling the hay. 



7. Explain the value of clover as a green manure crop. 



8. Try to show whether it is more profitable to turn 

 under the clover crop or to cut it as hay in a system of per- 

 manent soil fertility. 



PRACTICAL EXERCISES AND HOME PROJECTS 



1. The clover plant. Dig up a clover plant, get as many 

 roots as possible, wash them clean, and bring the whole plant 

 to the laboratory for study. 



Observe and note the following points : 



(a) Number and length of stems from the common root. 

 Are stems- erect, spreading, or twining? 



(b) Are there any branches? 



