FRUIT AND VEGETABLES. 117 



quarter of an acre so planted yielded at the rate of 40 

 bushels an acre more than his general field average — 150 

 bushels. If he had sold the 10 bushels from his quarter- 

 acre at 40 cents a bushel, would they have paid for his 

 extra time in selecting and planting? 



Spraying the Orchard, 



Spraying is just as important a feature of commercial orcharding as fertilizing, 

 picking, and packing the fruit. 



386. When he saw that he came out "just even" he 

 was a little disappointed, but he decided to follow the rules 

 once more, so he used the 400 best hills (the product of 

 100 best-producing tubers), as his basis of selection and 

 used the next best ones for the "general field" the next 

 year. Selection and planting took him only one day this 

 time, because he had fewer potatoes to handle and plant. 

 At digging time his quarter-acre of selected tubers yielded 



