REFERENCES 425 



8. Obtain 10 pounds of medium-sized, emooth, shallow-eyed pota- 

 toes, and 10 pounds of rough, deep-eyed potatoes. Carefully pare both 

 samples, noting the time required and the appearance. Weigh the 

 pared potatoes of each sample. What was the percentage of waste in 

 each and what was the difference in time required to peel the two 

 samples? 



4. Dig 100 hills of potatoes in a field where all hills were grown 

 under as nearly uniform conditions as possible. Note the weight, uni- 

 formity, character, and proportion of marketable tubers in each hill. 

 What would be the yield and value of an acre of potatoes planted in 

 the usual way if all hills were like the best? If all were Hke the poorest? 



5. Set stakes beside hills of growing potatoes on which the foliage 

 has been destroyed by bugs or blight, and by others with foliage unin- 

 jured. At digging time note yields from the marked hills. The results 

 will emphasize the importance of spraying. 



6. Obtain three potatoes of about the same size of each variety 

 commonly grown in your community. Put them all in a uniformlj' 

 heated oven and bake until one variety is well done. Remove all po- 

 tatoes and examine as to baking and quality. Is there any reason why 

 buyers prefer a car of potatoes of one variety to a car of mixed varieties? 



REFERENCES 



Cyclopedia of American Agriculture, Vol. II, Bailey. 



Farm Crops, Burkett. 



Southern Field Crops, Duggar. 



Sweet Potato Culture, Fitz. 



The Potato, Eraser. 



The Potato, Grubb and Guilford. 



Field Crop Production, Livingston. 



Productive Farm Crops, Montgomery. 



The Potato, Gilbert. 



A B C of Potato Culture, Terry and Root. 



Potatoes for Profit, Van Ornam. 



Scientific Potato Culture, Young. 



Farmers' Bulletins: 



324. Sweet Potatoes. 



544. Potato Tuber Diseases. 



548. Storing and Marketing Sweet Potatoes. 



753. Commercial Handling, Grading, and Marketing of Potatoes. 



847. Potato Storage and Storage Houses. 



953. Growing Potatoes under Irrigation. 



970. Sweet Potato Storage. 



