

PIONEER CORN IS RECOMMENDED 
ONLY IN ADAPTED AREAS 

@ Hybrid corn must be adapted to your growing season to yield the 
best results. Therefore, make certain you plant hybrids that have been 
bred and properly tested for your growing conditions. 
Pioneer hybrids are thoroughly tested for maturity—are recommended 
only in maturity areas where they produce profitable harvests—where 
they take advantage of the full growing season, yet ripen ahead of 
the average first crop-damaging freeze. 
Ask your local Pioneer representative to recommend hybrids best 
suited to your local soil and weather conditions. 


WHAT HAPPENS WHEN YOU PLANT CORN 
THAT MATURES TOO LATE OR TOO EARLY 


@ Late corn grown in the northern corn belt and in north central Iowa 
contains more moisture at harvest time than adapted varieties. There- 
fore it usually makes more bulk. But after it dries out in the crib, it 
loses much, if not all, of this extra bulk—and sometimes spoils before it 
dries out. In years of short seasons it often fails to mature, remains soft, 
gets damaged by early frost—becomes unfit for cribbing, sealing, mar- 
keting or feeding. 
Early corn raised too far south does not take advantage of the entire 
growing season. Unless planted late, it usually dries out too quickly, 
becomes hard and flinty, fails to make a full yield. 

HOW PIONEER HYBRIDS ARE LISTED 
IN THIS BOOKLET 


@ Pioneer hybrids appear in this booklet in their order of average 
maturity—northern varieties are listed first, with later hybrids following. 
Maps showing maturity belts appear on every page. The maturity of 
each hybrid is compared with that of one of the older better-known 
Pioneer varieties. For instance, Pioneer 353, listed on page 6, is de- 
scribed as maturing about a week earlier than Pioneer 322. 
Look On These Pages For Adapted Hybrids 
Pages 
Southern Minnesoitcetce eee sees cess tes eer aae vee cuhe teas beianbeccens Ce OM I a 
Northerniilow ct Sep cater etree ee a canis ce er as desi oy (OR 3 
Eastern South Dakota Spelt We 
North Central Iowa 8759 
Southeastern South Dakota 8, 9 
Garter lo oy circa. tracssascteces con vines -tavateses teases daectangiiecuehcnevenstasasgasasdsedccaccereseee Ma ual 
South Central Iowa T24 is. 

Sowthormy Low trea decereccesesteecastversactinsettevetevavascunsodscacsacrsacecsues sssevonstanese 13 
[3] 


Select the Right 
PIONEER fy hace 
FOR YOUR GROWING CONDITIONS 

MATURITY DIFFERENCES BY DAYS 
EARLIEST 
zaAmMms 
Northern 
Iowa, 
Minnesota, 
South Da- 
kota 
zamms 
North Cen- 
tral Iowa, 
Central 
Iowa, 
South Da- 
kota 
xmm= 
zAmms= 
South Cen- 
tral Iowa, 
Southern 
Iowa 
ZAmMmmMm=e 
AMM=e 
LATEST 
BASED ON NORMAL WEATHER 
AND SOIL 
@ Under normal temperature, rainfall, and 
soil fertility, this table is reasonably accurate. 
However, abnormal weather conditions and 
various ranges of soil fertility will vary these 
differences. 
NE- 
aA FOR ota ON 
wis BOOK™. Gut PA 
T N ras Om 
sOTA: A givi SG Sid tI 
or pool jon os ste 1° 
gescriPlon™ oth Compo™ 
- mene mec cae 
pionee? fot 
Moines: es 

