250 POTATOES 



the seed, the cultivation, the treatment for bugs and diseases, and 

 the grading and marketing. The basis of award should be as follows : 



(1) Yield 30 points 



(J) Net profit on investment 30 points 



(3) Exhibit of produce (fresh and cooked) . . 20 points 



(4) Crop report and story 20 points 



Total score 100 points 



2. Write a connected story on how your father handles his potato 

 crop. 



SUGGESTIONS 



1. Demonstrate the difference in loss of weight between a pared 

 and an unpared potato. Expose both the pared and the unpared, 

 after weighing, to the air of the schoolroom for a month and then 

 reweigh. Explain the reason for the difference in weight. 



2. Take two tumblers. Place a potato in each, the one having 

 the stem end down, and the other the stem end up. Add water to 

 cover the bottoms of the potatoes in the tumblers. Is there any dif- 

 ference in the growth of the sprouts? Explain. 



3. Cut a potato. How many different parts do you notice? Make 

 a thin slice and hold it to the light. Draw the section. Label outer 

 bark, inner bark, and pith. 



4. Preserve a scabby potato in formalin, and dry a leaf affected 

 with late blight between blotters for a schoolroom specimen. 



REFERENCES 



The Potato. Samuel Frazer. 

 Farmers Bulletins. Washington, D. C. 

 35. Potato Culture. 

 91. Potato Diseases. 

 324. Sweet Potatoes. 

 407. The Potato as a Truck Crop. 

 533. Good Seed Potatoes and How to Grow Them. 



