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1. Enhancing Alfalfa Production Through Improved Phosphorus and Potassium ManagementAddition of phosphorus (P) and potassium (K) fertilizer is vital to maintain alfalfa productivity. The objective of this study was to examine how P and K fertilizer application increases alfalfa yield. nutrient use, and plant persistence. Replicate plots of P (0, 50, 100, 150 1bs P205/acre) and K (0. 100, 200, 300, 400 Ibs K20/acre) treatments were arranged in a factorial design. Forage harvests occurred four times annually for 5 years and yield, mass per shoot, shoots per area, and herbage nutrient... |
2. Using Optical Sensors to Make N Recommendations for Sorghum, Wheat and Corn in KansasEfforts were begun in 2005 focused on developi ng sensor based N recommendations for grain sorghum ( Sorghum bicolor L. Moench), winter wheat ( Triticum aestivum L) and corn (Zea mays L.). The objective of these studies was to develop sensor based mid-season N recommendations using active crop sensors currently available on the commercial market. Sensors used to date include the GreenSeeker and CropCircle. Our appr oach used has been to establish multiple in- field well fertilized reference strips... |