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A COMPLETE CORN BREEDING: PROGRAM 
. . the key to more productive hybrids. . . 
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Pioneer breeding program is never ending — continuing year in and year 
out — constantly striving to develop new hybrids superior to those now 
being produced. 
A sound breeding program is the foundation of Pioneer quality . . . complete 
in every detail . . . from the production and selection of the inbreds . . . to 
the final testing of the hybrids. 
REMOVING TASSEL... TESTING THE YIELD OF 
INBRED PLOT EXPERIMENTAL HYBRID 

THE MAIN CORN BREEDING DEPARTMENTS 
. Developing new inbreds 
. Testing inbreds for diseases and insect resistance 
Testing inbreds for yield, lodging resistance, etc. 
. Testing experimental and commercial hybrids 
. Production of parent corn from those inbreds proven to be 
consistently outstanding in performance 
OF ON 

