INBREEDING— THE FIRST STEP (continued) 
1 
PIONEER CORN BREEDING IN SOUTH AMERICA 
PIONEER BREEDING PLOT IN ARGENTINA 
Years Ahead 
T oday, Pioneer Hi-Bred offers 1940 model hybrids 
for 1938 planting. 
Years ago, Pioneer corn breeders began growing 
two experimental corn crops every year so that new 
and better hybrids could be developed in only half 
the time ordinarily required. 
At first, the winter crop was grown in greenhouses, 
but the rapidly expanding breeding work soon out¬ 
grew this method. It became necessary to go to 
Argentina, South America, for each year’s second crop. 
Since the South American summer comes during 
our winter months, the Argentine corn plots enable 
Pioneer corn breeders to do two years of large scale 
development work in one. 
The new group of superior hybrids Pioneer is plac¬ 
ing on the market for 1938 planting is the outgrowth 
of our "year around” breeding work, and is the envy 
of the hybrid seed corn business. 
The marketing of these new, improved crosses would 
have been impossible for another five or six years if 
we pursued the ordinary course of producing only one 
experimental crop a year. 
All Pioneer Hi-Bred Seed Com sold to 
customers is grown in the Corn Belt and 
not in South America. The work carried 
on in Argentina is restricted to the devel¬ 
opment of inbreds and primary crosses. 
Pioneer Hi-Bred Seed Com is not sold in 
South America. 
NATIVE DETASSELERS WHO WORK IN PIONEER’S ARGENTINE CORN PLOTS 
