Proceedings
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| Filter results5 paper(s) found. |
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1. Nitrogen and Phosphorus Recalibration for Sunflower in the Northern Great PlainsSunflower producers in the northern Great Plains states of North Dakota, South Dakota, and Minnesota are presently directed to N and P recommendations that originate from research performed in the late 1960s and early 1970s. These three states alone produce more than 80% of the sunflowers in the United States on a yearly basis (USDA-NASS, 2015). The current general formulas determining N and P fertilizer rate in these top-producing states are equivalent. The N recommendation is represented here by... |
2. Comparative Effects of Herbicide, Nitrogen Inhibitors and Nitrogen Source on Nitrification and Corn YieldNitrogen management in crops can be challenging due to nitrogen transformations and losses in soil, such as nitrification and denitrification. Nitrification is the conversion of ammonium (NH4+) to nitrate (NO3-) by ammonia oxidizing bacteria (AOB), Nitrosomonas and Nitrobacter. Nitrates can be lost through leaching during heavy precipitation. Nitrification inhibitor products are used to temporarily slow the nitrification process by... W. Neels, A. Jhala, B. Maharjan, R. Little, J. Iqbal |
3. Promoting Adoption of Precision Nitrogen Management Technologies Through On-farm ResearchThe Nebraska On-Farm Research Network helps farmers evaluate products and practices that impact the productivity, profitability, and sustainability of their operations. There are many technologies that have potential to increase nitrogen use efficiency (NUE) on corn and winter wheat but typically these technologies have low adoption. At the same time, farmers have technologies such as GPS, yield monitors, and variable-rate application equipment on their farmers that enables them to easily conduct... L. Thompson, L. Puntel, T. Mieno, J. Iqbal, B. Maharjan, J. Luck, S. Norquest, J. Guilherme cesario pereira pinto, C. Uwineza |
4. Long-Term (16-year) Comparison of Phosphorus Fertilization Strategies: Targeted Soil Test Values Vs. Crop Removal in Corn ProductionDeveloping effective phosphorus (P) fertilization strategies to optimize corn (Zea mays L.) yields across varying environmental conditions is essential. This 16-year study, conducted on Nora silt loam soil in Concord, NE (initial Bray-1 P of 16±3 mg kg⁻¹), evaluated different P fertilization strategies under dry, normal, and wet years. The treatments included: no P or N (NPNN), no P (NP), phosphorus applied at crop removal (CRP), and maintaining soil P at 15 (B15), 30 (B30), and... S. Patel, C. Shapiro, J. Iqbal |
5. Evaluating the Effects of Nitrogen Source, Placement, and Timing on Corn Yield and Nitrogen Losses in the Sandy Soils of Northeast NebraskaThe impact of nitrogen sources, placement, enhanced efficiency fertilizers (EEFs), and application timing on improving groundwater quality in groundwater management areas remains unclear. This study assessed the effects of various N fertilizer sources, EEFs, application timing, and placement on corn yield and nitrogen losses via nitrate (NO3- ) leaching and ammonia (NH3) volatilization. The experiment was conducted in 2023, a notably dry year, at a farmer’s... A. Singh, C. Misar, J. Iqbal |