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Showing 1 to 16 of 16 for “"Urea-Ammonium Nitrate"”.
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Evaluation of Urea Ammonium-Nitrate Fertilizer Application Methods
… recommendations for corn. Injection of Urea Ammonium-Nitrate (UAN) may reduce N-loss via ammonia (NH?) volatilization compared to current surface application methods. This study evaluated injection and surface-banding application techniques of UAN in two ways: (1) by conducting a …
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Effect of fertilizers and adjuvants on quizalofop, sethoxydim, and thiameturon foliar uptake and weed control
Combinations of urea ammonium nitrate (UAN), ammonium polyphosphate (APP), ammonium sulfate (AS), petroleum oil concentrate (POC), and non-ionic surfactant (SURF) were evaluated as postemergence spray additives to improve giant foxtail (Setaria faberi Herrm.) and volunteer corn (Zea mays L.) …
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No-tillage squash production on agricultural soil and minesoil
… treatments were investigated: no nitrogen, ammonium, nitrate, urea ammonium nitrate solution (UAN), and UAN in combination with a nitrification inhibitor, nitrapyrin. Two rates of each N source were used, the recommended rate, 80 kg N/ha, and 160 kg N/ha. Squash yields were not affected by …
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The use of fertilizer nitrogen applications to increase productivity of soybean
… The seven different N sources evaluated were: ammonium nitrate (AN, 34-0-0), ammonium sulfate (21-0-0-24S), ESN (environmentally-smart nitrogen, 44-0-0), urea + Limus (urea treated with the urease inhibitor Limus, 46-0-0), liquid urea-ammonium nitrate (UAN, 28-0-0), urea (46-0-0), and a mixture …
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Optimizing Foramsulfuron for Weed Control and Corn Tolerance
Foramsulfuron is a new sulfonylurea herbicide for postemergence control of grass and some broadleaf weed species in corn. Field studies were conducted to evaluate weed control and corn tolerance from postemergence applications of foramsulfuron in sequential and total postemergence (POST) herbicide …
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Postemergence control of annual bluegrass with mesotrione in Kentucky bluegrass
… fertility, lower spray volumes, and adding urea-ammonium nitrate solution all increase control. Utilizing these strategies can have negative consequences including possible increased levels of injury to desirable species and spray drift. Mesotrione can be used to control annual bluegrass in …
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Maximizing corn yield potential through proper rate, placement, and timing of nitrogen fertility
… N with a V6 side-dress coulter of 28% urea ammonium nitrate (UAN) down the center of the row in combination with the liquid formulation of a humic acid called Hydra-Hume.
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Fate of water and nitrate using drainage water management on tile systems in East-Central Illinois
Nitrate from agricultural fields in the tile-drained upper Midwest is one of the primary causes of the hypoxic zone that forms each summer in the Gulf of Mexico. Drainage water management (DWM) is a potential edge-of-field technique that is being studied as a method to improve soil water management …
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Investigations on the Interations of Acetolactate Synthase (ALS)-Inhibiting Herbicides with Growth Regulator and non ALS-Inhibiting Herbicides in Corn (Zea mays) and Selected Weeds
… tank-mixed with bentazon plus atrazine with urea ammonium nitrate (UAN), or with ALS-inhibiting herbicides except halosulfuron-methyl in combination with 2,4-D was 24% lower when averaged over treatments. Yields of sethoxydim-resistant (SR) corn treated with sethoxydim mixed with combinations …
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Biomass yield potential and nitrogen use efficiency of the photoperiod-sensitive energy sorghum
… rates (0, 56, 112, 168 kg N ha-1) using aqueous urea ammonium nitrate (UAN: 32-0-0) in two locations (Urbana, IL and College Station, TX) in 2018 and 2019. The experimental design was a split-plot within a randomized complete block design with four replications. The N treatment was the main plot …
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Long-term effects of land application of poultry manure on crop production, and soil and water quality under a corn-soybean rotation system in Iowa
… received the N fertilizer (poultry manure or Urea Ammonium Nitrate, UAN). Subsurface drain water samples were collected weekly during the growing season (March-October) and analyzed for NO3-N and PO4-P concentration. Soil samples were collected before planting and after harvesting each year …
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Nitrogen Fate and Transformations in the Production of Containerized Specialty Crops
… control-release fertilizer (CRF) treatments [AN (ammonium-nitrate based) or UAN (urea ammonium-nitrate)] products. This study determined that 97% of the released N from the CRF treatments was lost via aqueous or gaseous pathways. The aqueous losses were inferred to be predominately composed of …
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An Integrated Approach for Nitrogen Management in Upland Cotton Production
… subsurface application/placement of granular (urea) and fluid N source (urea ammonium nitrate; UAN32); and 2) compare NH3 volatilization from urea and UAN treated with enhanced-efficiency fertilizer products. For this study, four A horizon soils of different types were collected from four sites …
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Corn planting strategies in the United States Corn Belt
… investigated corn residue treated with liquid ammonium sulfate (AMS) and urea-ammonium nitrate (UAN) broadcast-applied post-harvest. Treatments receiving fall N applications did not show greater residue decomposition as measured by stalk strength, and carbon-to-nitrogen (C/N) ratios were not …
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Agronomic management to improve corn productivity under high-yielding environments
… N. When making a split application, sidedressing urea ammonium nitrate (UAN) as Y-drop near the crop row was the best method and source of application. In general, the highest yielding N treatments received banded N at preplant as either urea or polyer-coated urea (PCU).
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Improved agronomic management of corn and soybean to increase productivity
… total N application was 180 lbs N acre-1 as 32 % urea ammonium nitrate (UAN). Both the N timings were evaluated with four different placements of P utilizing ammonium polyphosphate (10-34-0) either as: none, 20 lbs P2O5 acre-1 in-furrow, 40 lbs P2O5 acre-1 2x2 band, or 60 lbs P2O5 acre-1 via 20 …