RECORDS OF PIONEER HYBRIDS AVAILABLE IN QUANTITY 
LISTED IN ORDER OF MATURITY . . . COMPILED FROM PIONEER TESTS 
Popular PIONEER Hybrids 357, 322, and 307 Used as Checks 
NORTHERN SECTION 
Pioneer 
Years 
Yield 
Moist 
Ear Height 
‘Lodging 
No. 
Tested 
% 357 
% 357 
% 357 
% 357 
355 
4 
94 
98 
95 
99 
357 
4 
100 
100 
100 
100 
O.P. 
4 
79 
102 
99 
147 
In Northeastern 
Iowa, the Hybrids Below Are Late in Short 
Seasons 
323 
4 
98 
111 
113 
100 
315 
1 
106 
114 
119 
98 
322 
2 
107 
115 
117 
73 
NORTH-CENTRAL 
SECTION 
% 322 
% 322 
% 322 
% 322 
323 
4 
95 
97 
102 
132 
O.P. 
4 
78 
99 
104 
171 
322 
4 
100 
100 
100 
100 
315 
4 
101 
100 
102 
133 
311 
4 
93 
102 
104 
109 
308-D 
2 
106 
102 
124 
104 
311-A 
4 
93 
103 
104 
104 
314 
1 
102 
111 
119 
105 
SOUTH-CENTRAL 
SECTION 
% 307 
% 307 
% 307 
% 307 
322 
2 
97 
90 
91 
95 
315 
4 
96 
92 
97 
127 
311 
5 
91 
93 
97 
102 
311-A 
5 
91 
94 
95 
111 
318 
1 
97 
96 
95 
92 
308-D 
5 
99 
97 
103 
98 
314 
5 
103 
98 
99 
110 
O.P. 
5 
76 
99 
103 
167 
307 
5 
100 
100 
100 
100 
317 
3 
107 
102 
95 
90 
SOUTHERN SECTION 
% 307 
% 307 
% 307 
% 307 
308-D 
5 
99 
97 
103 
98 
314 
5 
103 
98 
99 
110 
O.P. 
5 
76 
99 
103 
167 
307 
5 
100 
100 
100 
100 
317 
3 
107 
102 
95 
90 
O.P.—Open-pollinated corn commonly grown in respective sections—inserted only for comparison. 
*In lodging column, the lowest percentage indicates the best lodging resistant corn. 
LteexHi QuCvLlttf into- eveSuf, lujAsud 
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