Oakes
Irrigation Research Site |
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Carrington
Research Extension Center * North Dakota State University |
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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. Strip-till, corn on soybean, nitrogen rate
study at the Oakes Irrigation Research Site in 2011. |
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6 yrs corn/soybean |
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Population |
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Return to4 |
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Fertilizer1 |
Grain |
Harvest |
Test |
After |
Chrlorphyll Meter |
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NDRE Reading |
Stalk |
Grain |
Silk |
Mature |
N Above |
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N Rate |
Yield2 |
Moisture |
Weight |
Green Snap |
9-Aug |
22-Aug |
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13-Jul |
4-Aug |
Nitrate-N |
Oil |
Protein |
Starch |
Date |
Date |
Low N Rate |
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lb/ac |
bu/ac |
% |
lb/bu |
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ppm |
----------%------------ |
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$ |
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25 |
151.7 |
17.8 |
55.8 |
31626 |
25.1 |
20.8 |
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0.287 |
0.301 |
1033 |
3.2 |
7.7 |
74.0 |
7/28 |
9/30 |
0 |
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100d3 |
210.9 |
17.8 |
56.2 |
29716 |
40.6 |
38.6 |
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0.327 |
0.321 |
665 |
3.3 |
8.2 |
73.6 |
7/27 |
9/30 |
258 |
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100 |
207.7 |
18.5 |
55.9 |
31149 |
39.7 |
38.6 |
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0.317 |
0.323 |
295 |
3.1 |
8.1 |
73.9 |
7/27 |
10/1 |
243 |
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150 |
235.2 |
18.7 |
55.4 |
31685 |
44.8 |
46.5 |
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0.328 |
0.327 |
607 |
3.3 |
8.6 |
73.3 |
7/27 |
10/5 |
355 |
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200 |
239.7 |
19.0 |
55.9 |
31566 |
46.6 |
46.2 |
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0.333 |
0.336 |
2240 |
3.2 |
8.8 |
73.3 |
7/27 |
10/5 |
352 |
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Mean |
209.0 |
18.3 |
18.3 |
31148 |
39.4 |
38.1 |
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0.318 |
0.322 |
968 |
3.2 |
8.3 |
74 |
7/27 |
10/2 |
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CV% |
5.4 |
3.2 |
1.6 |
3.8 |
7.3 |
9.1 |
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2.7 |
6.5 |
113 |
7.2 |
2.1 |
0.0 |
0.0 |
0.0 |
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LSD.05 |
17.4 |
0.9 |
NS |
NS |
4.4 |
5.3 |
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0.013 |
NS |
NS |
NS |
0.3 |
NS |
NS |
3 |
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165 lb N/ac with pre-planting
strip-till and or at planting. The remainder N sidedressed on June 24, except
for the 25 lb N/ac rate |
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which was all applied pre
planting strip-till and planting. |
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2Yield adjusted to 15.5%
moisture. |
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345 lb N /ac of planting N
applied as dribble treatment to the side of the row. |
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4Corn @$5.00/bu, N @ $0.50/lb. |
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Planting Date =
May 17; Harvest Date = October 12; Previous Crop = Soybean. |
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Fertilizer Rate
lbs/acre = N see table, 40 P2O5, 157 K2O; 21 S; Irrigation =
9.9 inches. |
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Detailed material
and methods |
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Other corn Studies 2011 |
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Corn
hybrid performance trial dry land |
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Oakes Irrigation
Research Site |
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Corn
hybrid performance trial irrigated |
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Home page |
Report
2011 |
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Corn
late planting date and relative maturity study |
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Corn
row width and hybrid study |
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Stover
removal corn corn rotation |
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Stover
removal corn soybean rotation |
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Strip-tilled
continuous corn N rate |
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