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