RECORDS OF PIONEER HYBRIDS AVAILABLE IN LIMITED AMOUNTS 
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 
o,p. 
4 
79 
102 
99 
147 
352 
1 
113 
103 
108 
77 
350 
2 
117 
103 
106 
79 
In Northeastern 
Iowa, the Hybrids Below Are Late in 
Short Seasons 
349 
2 
120 
106 
124 
98 
335 
4 
108 
114 
97 
84 
NORTH-CENTRAL SECTION 
% 322 
% 322 
% 322 
% 322 
322-A 
2 
101 
98 
100 
108 
O.P. 
4 
78 
99 
104 
171 
335 
1 
97 
99 
82 
111 
324 
2 
101 
100 
96 
89 
321 
1 
101 
103 
105 
111 
329 
2 
105 
104 
89 
68 
328 
2 
102 
105 
91 
100 
330 
1 
107 
108 
90 
63 
SOUTH-CENTRAL 
SECTION 
% 307 
% 307 
% 307 
% 307 
324 
2 
94 
88 
89 
105 
321 
1 
104 
91 
99 
116 
O.P. 
5 
79 
99 
103 
167 
316 
4 
96 
102 
81 
81 
312 
1 
106 
105 
114 
110 
319 
1 
112 
108 
110 
93 
313 
1 
102 
112 
110 
105 
SOUTHERN SECTION 
% 307 
% 307 
% 307 
% 307 
O.P. 
5 
76 
99 
103 
167 
312 
1 
106 
105 
114 
110 
319 
1 
112 
108 
110 
93 
313 
1 
102 
112 
110 
105 
305-A 
4 
102 
118 
106 
110 
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 hybrid. 
NOTE: In the main, the above hybrids are relatively new. Their short time record indicates that 
they are superior. However, we recommend their use only in limited quantity until they can 
be tested further. 
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