Proceedings
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| Filter results8 paper(s) found. |
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1. Cover Crops Influence Soil Health and Nutrient Cycling in a Multi-Location Study in South DakotaSoil without living roots potentially loses mobile nutrients and retains excess water. Unprotected soil degradation and erosion enable the loss of carbon and nutrient rich top soil. Cover crops provide armor for the soil protecting from carbon and nutrient loss. Cover crop blends may influence soil health parameters and nutrient cycling. This multi-locational study depicts the influence of cover crop species blends with varying grass and broadleaf concentrations on established soil-health indicators... D. Sanyal, J. Wolthuizen, D. Karki, J. Clark, A. Bly |
2. Do cover crops improve soil health and enhance nutrient availability to cash crops?Bare soils are prone to erosion and lose soluble nutrients. Cover crops provide protection to the soil against erosion and nutrient loss. We hypothesized that the cover crops should uptake available nutrients from the soils in the fall when there is no cash crop, assimilate the nutrients in their tissues, and in the following spring, should release the nutrients back to the soil during the next cash crop growing season. In our study, we are quantifying the nutrients taken up by the cover crops... D. Sanyal, A. Rahhal, H. Bielenberg, J. Wolthuizen, J. Clark, A. Bly |
3. Cover crops nutrients uptake did not cause yield loss in cornBare soils are susceptible to erosion and nutrient loss. Cover crops and residues provide physical protection against erosion and nutrient loss, and improve nutrient cycling as well as biodiversity. We hypothesized that cover crops store available nutrients from the soil in the fall and release them the next spring for the next cash crop, minimizing potential nutrients loss with no adverse effect on cash crop yield. A four site-year study throughout South Dakota was conducted to compare... |
4. Can Cover Crops Help to Improve Soil Health While Having a Positive Effect on Corn Grain Yield?Cover crops have recently gained attention in the U.S. Mid-west because of their potential to increase soil organic matter and improve overall soil health. There is some concern however, that cover crops may negatively impact corn grain yield. This study was conducted to determine the effects that different cover crop mixtures have on soil health measurements and corn grain yield at increasing nitrogen rates. Cover crops were planted in the fall as a dominantly grass mixture, dominantly... |
5. 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 |
6. 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 |
7. 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 |
8. 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 |