EXERCISE 23. TESTING THE CORN PLANTER 



Equipment: A two-row corn planter; a quantity of 

 shelled corn. 



Method: Examine the planter and find answers to the 

 following questions : 



Has the planter a drill or full hill drop? 



How is the change made from drill to hill drop? 



Has the planter edge selection or flat plate? 



Will the seed box tip over? 



How many valves in each planter shank? 



Is the furrow opener a stub or curved runner or a disk? 



Set the planter to drop three grains to the hill and meas- 

 ure off a distance of one hundred feet on a smooth level 

 stretch. Draw the planter over this distance and count 

 the kernels dropped in each hill. Repeat the test three 

 times and record the results. 



Change the planter to the drill drop and test in the same 

 manner. 



First 

 Count. 



Second 

 Count. 



Third 

 Count. 



Average. 



Number of hills with no grains . 

 Number of hills with 1 grain . . . 

 Number of hills with 2 grains . . 

 Number of hills with 3 grains . . 

 Number of hills with more than 

 3 grains 



57 



