APPENDIX 273 



8. John Bobbins raised 3,000 bushels of potatoes and 

 was offered 40 cents a bushel for them in November. 

 After storing them through the winter, he sold them at 

 75 cents per bushel. If the potatoes shrank 1/10, what 

 was his gain by keeping them over winter ? 



9. At another time John stored his crop of 3,000 bush- 

 els rather than sell them for 50 cents per bushel. The 

 following spring he was forced to sell his crop for 40 

 cents per bushel. What did he lose if they shrank 1/10? 



10. Hold a potato paring contest among the girls of 

 the class, weighing the parings and the peeled potatoes. 



Write to the Department of Agriculture, Washington, 

 D. C, for the following farmers' bulletins: Potato Cul- 

 ture, No. 35 ; Potato as a Truck Crop, No. 407 ; Potatoes 

 and Other Root Crops as Food, No. 295. 



WEEDS * 

 (Chapter 20) 



1. If one extra harrowing killed enough weeds to 

 increase the corn crop 3 bushels an acre, how much was the 

 clear gain for this work on 100 acres when corn sells at 

 50 cents per bushel? 



2. If morning glories destroy 162 hills of an acre of 

 corn that has 3240 hills, what per cent of the crop is left ? 



3. If the acre of corn yields 57 bushels, how much 

 would it have yielded if the morning glories had been 

 destroyed ? 



4. If a clean field produces 56 bushels of corn an acre 

 and a weedy field only 34 bushels, what is the loss per 

 acre caused by weeds when corn sells for 45 cents a bushel ? 



5. If quack grass reduces the yield of com 8 bushels 

 per acre, what is the loss when corn is selling at 55 cents 

 a bushel? 



