| Oakes Irrigation Research Site |
| Carrington
Research Extension Center * North Dakota State University |
| P.O. Box 531,
Oakes, ND 58474-0531, Phone: (701) 742-2744, FAX: (701) 742-2700,
E-mail: |
Walter.Albus@ndsu.edu |
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| Table 1. Irrigated Corn Nitrogen Rate Studies in
Producers Fields at Oakes, ND, in 2009. |
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Fall-2009 |
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Return to1 |
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Fertilizer |
Combine |
Chlorophyll
Meter Readings |
Stalk |
Soil |
Grain |
Test |
N Above |
Crop |
| Field |
N Rate |
Yield |
Near Silking |
Mid August |
Nitrate-N |
Nitrate-N |
Oil |
Protein |
Starch |
Weight |
Research Rate |
2008 |
|
lb/ac |
bu/ac |
|
ppm |
|
% |
% |
% |
lb/bu |
$ |
|
| w |
130 |
201.8 |
56.6 |
55.9 |
354 |
24 |
2.8 |
7.0 |
72.8 |
49.0 |
|
Blk. Turtle |
| w |
170 |
198.8 |
58.2 |
57.4 |
935 |
24 |
2.4 |
7.0 |
73.5 |
47.9 |
-25.9 |
Blk. Turtle |
| x |
141 |
183.6 |
53.0 |
53.8 |
487 |
16 |
3.4 |
6.88 |
71.6 |
46.3 |
|
Corn |
| x |
210 |
201.3 |
53.8 |
56.8 |
2864 |
16 |
3.3 |
7.26 |
72.0 |
47.8 |
30.8 |
Corn |
| y |
160 |
209.8 |
|
|
|
|
|
Corn |
| y |
200 |
200.2 |
|
|
|
|
|
-47.6 |
Corn |
| z |
150 |
167.3 |
54.7 |
55.3 |
319 |
20 |
2.9 |
7.5 |
72.8 |
50.8 |
|
Corn |
| z |
180 |
189.6 |
56.7 |
56.7 |
647 |
48 |
3.1 |
7.8 |
72.5 |
51.5 |
61.5 |
Corn |
| a2 |
150 |
185.3 |
56.6 |
58.3 |
214 |
16 |
3.5 |
8.1 |
72.0 |
49.4 |
|
Corn |
| a2 |
180 |
193.5 |
57.6 |
61.7 |
249 |
12 |
3.5 |
8.6 |
71.6 |
50.4 |
15.2 |
Corn |
| b2 |
141 |
202.9 |
59.4 |
54.8 |
4154 |
8 |
3.5 |
8.02 |
71.1 |
51.6 |
|
Potato |
| b2 |
203 |
209.3 |
61.3 |
55.0 |
171 |
28 |
3.4 |
8.95 |
70.4 |
50.3 |
-3.7 |
Potato |
| c2 |
141 |
196.3 |
56.3 |
54.8 |
87 |
12 |
4.1 |
8.48 |
70.0 |
48.0 |
|
Potato |
| c2 |
160 |
206.7 |
57.8 |
55.0 |
1697 |
8 |
4.1 |
8.92 |
69.5 |
48.2 |
26.7 |
Potato |
| d2 |
110 |
208.0 |
54.8 |
55.1 |
1261 |
20 |
3.4 |
8.2 |
71.8 |
51.2 |
|
Potato |
| d2 |
150 |
204.4 |
54.5 |
57.3 |
3459 |
24 |
3.0 |
9.2 |
71.9 |
52.5 |
-28.0 |
Potato |
| e2 |
164 |
223.6 |
52.9 |
54.2 |
544 |
16 |
3.7 |
8.88 |
70.4 |
47.8 |
|
Potato |
| e2 |
240 |
228.1 |
57.5 |
59.3 |
2991 |
76 |
4.0 |
8.99 |
69.5 |
47.8 |
-15.6 |
Potato |
| f2 |
120 |
219.2 |
58.2 |
56.0 |
2943 |
24 |
2.8 |
7.8 |
73.2 |
53.5 |
|
Potato |
| f2 |
150 |
221.8 |
58.0 |
55.4 |
2935 |
56 |
2.6 |
7.9 |
73.2 |
53.9 |
-3.4 |
Potato |
| g2 |
120 |
223.6 |
58.0 |
55.4 |
2611 |
44 |
2.9 |
7.7 |
72.8 |
53.5 |
|
Potato |
| g2 |
150 |
216.4 |
58.3 |
55.5 |
3832 |
68 |
2.7 |
8.1 |
72.8 |
53.7 |
-35.7 |
Potato |
| 1Return to fertilizer N above the conservative rate in each
field was caculated using $3.30 per bushel corn and $0.40 per lb of actual N. |
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Table 2.
Irrigated Corn Nitrogen Rates in Producers Fields at Oakes ND, from
2006-2009. |
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CORN ON CORN
(13 Fields) |
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|
Spring |
Fall |
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|
Chlorophyll |
|
|
Return to 1 |
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|
Fertilizer |
Soil |
Soil |
Combine |
Yield/ |
Meter |
Stalk |
Grain |
N Above |
|
|
N Rate |
Nitrate-N |
Nitrate-N |
Yield |
Yield max |
Silking |
Nitrate-N |
Protein |
Low Rate |
|
|
lb/ac |
lb/ac |
lb/ac |
bu/ac |
|
ppm |
% |
|
|
|
138 |
39 |
31 |
191.1 |
0.96 |
56.1 |
863 |
7.89 |
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|
|
35 |
57 |
202.2 |
0.99 |
55.9 |
1024 |
8.08 |
20.6 |
|
|
207 |
56 |
43 |
204.3 |
0.99 |
52.7 |
3357 |
7.85 |
15.8 |
|
|
247 |
41 |
59 |
209.7 |
1.00 |
55.0 |
4277 |
8.25 |
17.7 |
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CORN ON
POTATO (16 Fields) |
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Spring |
Fall |
|
|
Chlorophyll |
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|
Return to 1 |
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|
Fertilizer |
Soil |
Soil |
Combine |
|
Meter |
Stalk |
Grain |
N Above |
|
|
N Rate |
Nitrate-N |
Nitrate-N |
Yield |
Y/Ymax |
Silking |
Nitrate-N |
Protein |
Low Rate |
|
|
lb/ac |
lb/ac |
lb/ac |
bu/ac |
|
ppm |
% |
|
|
|
117 |
68 |
35 |
204.3 |
0.99 |
56.0 |
2485 |
7.96 |
|
|
|
147 |
39 |
38 |
201.5 |
0.97 |
57.5 |
2986 |
8.36 |
-9.4 |
|
|
168 |
61 |
54 |
210.1 |
1.00 |
55.5 |
3545 |
8.50 |
6.9 |
|
|
181 |
43 |
51 |
220.4 |
0.98 |
55.3 |
4266 |
7.90 |
32.8 |
|
|
211 |
49 |
99 |
220.4 |
0.99 |
59.7 |
3765 |
8.46 |
27.4 |
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|
231 |
59 |
84 |
216.2 |
0.99 |
57.2 |
5817 |
8.15 |
1.6 |
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|
265 |
44 |
127 |
209.8 |
0.98 |
51.3 |
8577 |
7.78 |
-27.5 |
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1Corn price = $3.30/bu, Nitrogen price $0.40/lb. |
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| Go to Farm Activities
Producers Fields |
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| Go to
Oakes Irrigation Research Site Variety Performance Trials |
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| Go to
Oakes Irrigation Research Site crop index |
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| Go to Oakes Irrigation Research Site 2009 Annual Report |
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| Go to
Oakes Irrigation Research Site home page |
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