84 ELEMENTARY AGRICULTURE 



2. Suppose it takes two applications to cure the 

 blight and each application requires a day's time, 

 worth $i. What is the cost of the cure? 



3. How many bushels of potatoes, worth 25 cents, 

 will it take to pay the cost of this cure ? 



4. Suppose two fields of potatoes of an acre each- 

 owned by different farmers. One farmer sprays to 

 cure the blight and gets 188 bushels of potatoes worth 

 25 cents per bushel. The other neglects his field and 

 gets but 75 bushels. What is the difference in the 

 value of the two crops ? 



5. What did it cost the first farmer to apply the 

 spray? What is his actual gain over the other farmer? 

 Did it pay to spray? 



6. Suppose it takes two applications of two pounds 

 of paris green each, and two days' time at $i per day 

 to destroy the bugs on an acre of potatoes, how many 

 bushels of potatoes at 30 cents will it take to pay for 

 the treatment ? 



7. Suppose the yield is increased from 50 bushels 

 to 200 bushels thereby, with potatoes at 20 cents per 

 bushel what does the farmer gain? 



8. If both bugs and blight attack the crop, what 

 is to be done ? What will be the cost of both remedies ? 

 What will be saved by mixing the cures ? 



9. How much does the formaldehyde solution cost 

 per bushel for seed oats? 



10. If three bushels are sown to the acre, what 

 does this solution cost per acre? 



11. Suppose it takes a day's work, worth $i, to 



