Research Article
Relative Efficacy of Liquid Nitrogen Fertilizers in Dryland Spring Wheat
Table 3
Field activities and growing conditions, Conrad, Choteau, and Corvallis, 2013.
| | Field activity | Choteau | Conrad | Corvallis |
| | Seeding date | May 1 | April 26 | April 20 | | Variety | Choteau | Choteau | Choteau | | Seeding rate: seeds/ha | 1.8 million | 1.8 million | 1.8 million | | Herbicide | Supremacy, Axial XL | Supremacy, Axial XL | Supremacy, Axial XL | | Herbicide date | June 7 | May 29 | May 20 | | Sensing date | June 25 | June 24 | June 22 | | Top-dressing date | June 25 | June 24 | June 22 | | Harvest date | August 23 | August 19 | August 12 | | Average soil temperature °C | 15.10 | 15.10 | 15.25 | | Average air temperature °C | 12.60 | 12.60 | 13.45 | | Soil series | Scobey Clay Loam | Scobey Clay Loam | Burnt Fork Silt Loam | | Soil N, kg ha−1 | 42.5 | 46 | 42.5 | | Soil P, ppm | 21 | 25 | 21 | | Soil K, ppm | 361 | 398 | 321 | | Organic matter% | 2.7 | 2.2 | 2.8 | | Soil pH | 7.8 | 7.7 | 7.8 |
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