Accurately GRADED... TESTED 
While Pioneer hybrid seed is being conveyed to the 
sheller from the drying bins, it is given the third and 
final inspection for undesirable corn. 
Seed passing the final inspection . . . is fed into spe- 
cially constructed shellers . . . equipped with air- 
blast cleaners which blow out the dust... dirt... 
and chaffy kernels. 
After the corn has been shelled, elevators carry it to 
bins, located above the grading machines. 

FINAL INSPECTION BEFORE SHELLING 














Grading machines accurately divide the kernels into six uni- 
form sizes . . . large flat . . . medium flat ... small flat... 
large round ... medium round ...and small round. All 
of the light, chaffy, cracked kernels and tips are blown out 
. . leaving only the clean, healthy seed. 
Seed samples representing each day’s run of dried and graded 
corn from each plant, are sent to Pioneer's modern seed testing 
laboratory ... where it is tested for germination and for 
accuracy of grading. 
Every kernel size of each hybrid is checked in calibrating 
machines for proper planter plate recommendations. Each 
bag has a tag attached to it, listing the recommended planter 
plates. 
CALIBRATING . . . DETERMINES PLATE SIZES 
After the corn has been graded 
... passed the germination tests 
... it is then treated with mer- 
cury dust to aid germination 
during a cold, wet spring. It is 
then put up in bushel and half- 
bushel bags . . . sealed by 
sewing .. . ready for delivery 

GRADED . . . TESTED . . . TREATED in March and April. PIONEER . . . READY FOR DELIVERY 

