RESULTS of Pioneer Testing Work 
IN MINNESOTA AND SOUTH DAKOTA 
REGION A 
Pioneer 355 can be grown with safety in this region if planted on very rich soil not 
later than the middle of May. No testing work has been carried on this far north. 
REGION B 
Ear 
Root 
Stalks 
Pioneer 
Years 
Yield 
Yield 
Moist. 
Height 
Lodging 
Standing 
No. 
Tested 
Bu. 
% 357 
% 357 
% 357 
% 357 
% 357 
O.P. 
3 
48.3 
90 
95 
91 
144 
99 
355 
3 
56.9 
106 
96 
86 
96 
102 
357 
3 
53.7 
100 
100 
100 
100 
100 
352 
1 
62.8 
117 
106 
99 
95 
101 
322 
1 
62.3 
116 
117 
106 
76 
102 
335 
3 
60.7 
113 
121 
96 
83 
101 
349 
1 
63.9 
119 
124 
108 
87 
102 
324 has not been tested 
in Minnesota and South Dakota. 
We recommend trial purchase only. 
REGION C 
Ear 
Root 
Stalks 
Pioneer 
Years 
Yield 
Moist. 
Height 
Lodging 
Standing 
No. 
Tested 
% 322 
% 322 
% 322 
% 322 
% 322 
352 
2 
100 
88 
85 
110 
99 
O.P. 
5 
84 
100 
104 
186 
92 
322 
5 
100 
100 
100 
100 
100 
324 
3 
103 
100 
95 
90 
102 
349 
1 
105 
100 
114 
131 
102 
335 
2 
96 
101 
78 
101 
106 
315 
5 
103 
102 
106 
131 
92 
330 
2 
106 
107 
91 
60 
102 
314 
2 
108 
108 
122 
111 
96 
REGION D 
Pioneer 314 and 330 are recommended in Region D. 
No testing work has been done in this Region. 
= IMPORTANT 
The figures under "Yield", "Moisture", "Ear Height", 
"Root Lodging", and "Stalks Standing", are given in 
percentages of Pioneer 357, in Region B, and Pioneer 
322 in Region C. Both these hybrids are assumed to 
be 100%. Under "Yield" and "Stalks Standing", 
those hybrids whose percentages are higher than 
100% have a higher yield record and have more 
standing stalks than Pioneer 357 in Region B, and 
Pioneer 322 in Region C. 
Under "Moisture", those hybrids above 100% are 
later maturing than Pioneer 357 in Region B and 
Pioneer 322 in Region C. Under "Ear Height" and 
"Root Lodging", those hybrids below 100% have a 
lower ear height and less root lodging than Pioneer 
357 and 322. 
PIONEER 
