Grade. 

 Date. . 



EXERCISE 33 

 SEED BEANS 



Object. To study the selection of seed beans. 



Directions. The class should either visit a bean field just before harvest 

 to select bean plants or the plants may be selected by the instructor and 

 stored for later use in the laboratory. Each student should select ten plants 

 and number each plant. Plants should be primarily selected for (1) high 

 yield, also for (2) freedom from disease, and (3) early maturity. Of the 

 ten plants, select two which are about average for the field. Record data, 

 and plot the yields below. 



Numbers of Plants 



93 



