tuber crops: the potato 



Types of Form 

 Potatoes showing variety of form — long, round, and 

 intermediate. Make outline or shaded drawings on 

 blackboard or paper. 



Depth of Eyes 



Potatoes of various forms, some with deep, some with 

 shallow eyes. 



Weigh a potato with shallow eyes. Make a record 

 of its weight. Peel this potato. Weigh the peelings. 

 Determine the per cent of peelings. 



Weigh a potato with deep eyes. Make a record of 

 its weight. Peel this potato. Weigh the peelings. 

 Determine the per cent of peelings. 



In which potato is there the greater waste by peeling? 



Seed Balls 

 Seed balls from potato tops, brought in by the pupils. 

 Examine carefully and draw. Open and examine. 

 What do they come from? How do they differ from 

 potato tubers in origin? 



Cut the balls in two. Place in water in a dish. In a 

 week or so they will begin to ferment. Then wash out 

 IS 



