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| CO-09F | Phosphorus Soil Test Calibration Using Landscape Spatial Variability |
| CO-10F | Potassium Needs of High-yielding Alfalfa on the West Slope of Colorado |
| CO-11F | Long-term Phosphorus Fertilization of No-till Dryland Intensive Cropping Systems |
| CO-12F | Spatial Removal of Nutrients by Corn |
| CO-13 | Contribution of Animal Feeding Operations and Synthetic Fertilizers to Ammonia Deposition in Rocky Mountain National Park |
