Open Access. Powered by Scholars. Published by Universities.®
- Publication Year
- Publication
-
- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (7)
- Department of Agronomy and Horticulture: Faculty Publications (5)
- Historical Research Bulletins of the Nebraska Agricultural Experiment Station (1)
- Nebraska Agricultural Experiment Station: Historical Circulars (1)
Articles 1 - 14 of 14
Full-Text Articles in Life Sciences
Effects Of Nitrogen And Phosphorus Fertilizer And Topsoil Amendment On Native Plant Cover In Roadside Revegetation Projects, Heidi L. Hillhouse, Walter H. Schacht, Jonathan M. Soper, Carol E. Wienhold
Effects Of Nitrogen And Phosphorus Fertilizer And Topsoil Amendment On Native Plant Cover In Roadside Revegetation Projects, Heidi L. Hillhouse, Walter H. Schacht, Jonathan M. Soper, Carol E. Wienhold
Department of Agronomy and Horticulture: Faculty Publications
Establishing vegetation on roadsides following construction can be challenging, especially for relatively slow growing native species. Topsoil is generally removed during construction, and the surface soil following construction (“cut-slope soils”) is often compacted and low in nutrients, providing poor growing conditions for vegetation. Nebraska Department of Transportation (NDOT) protocols have historically called for nitrogen (N) and phosphorus (P) fertilization when planting roadside vegetation following construction, but these recommendations were developed for cool-season grass plantings and most current plantings use slower-establishing, native warmseason grasses that may benefit less than expected from current planting protocols. We evaluated the effects of nitrogen and …
Arbuscular Mycorrhizal Fungi Differ In Their Ability To Regulate The Expression Of Phosphate Transporters In Maize (Zea Mays L.), Hui Tian, Rhae A. Drijber, Xiaolin Li, Daniel N. Miller, Brian J. Wienhold
Arbuscular Mycorrhizal Fungi Differ In Their Ability To Regulate The Expression Of Phosphate Transporters In Maize (Zea Mays L.), Hui Tian, Rhae A. Drijber, Xiaolin Li, Daniel N. Miller, Brian J. Wienhold
Department of Agronomy and Horticulture: Faculty Publications
Previous studies have found that some phosphate (Pi) starvation inducible transporter genes are downregulated and arbuscular mycorrhizal (AM) inducible Pi transporter genes are upregulated in maize roots associated with the fungus Glomus intraradices. However, little is known about the functional diversity of different AM fungal species in influencing the expression of Pi transporters in maize roots. Here, we studied the expression of two Pi transporter genes ZEAma:Pht1;3 (Pi starvation inducible) and ZEAma:Pht1;6 (AM inducible) in maize root colonized by different AM fungal inoculants. Non-mycorrhizal maize, maize colonized by Glomus deserticola (CA113), Glomus intraradices (IA506), Glomus mosseae (CA201), Gigaspora gigantea …
Biomass Yield And Nutrient Responses Of Switchgrass To Phosphorus Application, M. K. Kering, J. T. Biermacher, T. J. Butler, J. Mosali, John A. Guretzky
Biomass Yield And Nutrient Responses Of Switchgrass To Phosphorus Application, M. K. Kering, J. T. Biermacher, T. J. Butler, J. Mosali, John A. Guretzky
Department of Agronomy and Horticulture: Faculty Publications
Increasing desire for renewable energy sources has increased research on biomass energy crops in marginal areas with low potential for food and fiber crop production. In this study, experiments were established on low phosphorus (P) soils in southern Oklahoma, USA to determine switchgrass biomass yield, nutrient concentrations, and nutrient removal responses to P and nitrogen (N) fertilizer application. Four P rates (0, 15, 30, and 45 kg Pha−1) and two N fertilizer rates (0 and 135 kg Nha−1) were evaluated at two locations (Ardmore and Waurika) for 3 years.While P fertilization had no effect on yield …
Effect Of Coal Combustion By-Products On Phosphorus Runoff From A Coastal Plain Soil, Keisha N. Johnson, Arthur L. Allen, Peter J. A. Kleinman, Fawzy M. Hashem, Andrew N. Sharpley, William L. Stout
Effect Of Coal Combustion By-Products On Phosphorus Runoff From A Coastal Plain Soil, Keisha N. Johnson, Arthur L. Allen, Peter J. A. Kleinman, Fawzy M. Hashem, Andrew N. Sharpley, William L. Stout
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Coal combustion by-products can lower soil phosphorus (P) solubility, but few studies have assessed their effect on runoff P. A soil with elevated P content was amended with fluidized bed combustion ash, flue gas desulfurization gypsum, and anthracite refuse ash at rates of 0–40 g kg−1 soil, and runoff from small plots was monitored over 3 years. In the first year, by-products lowered dissolved P in runoff by up to 47% below the untreated control; however, effects did not persist into the remaining years of the study. Total P losses were not significantly affected by coal combustion by-products, likely …
Groundwater Nutrient Concentrations During Prairie Reconstruction On An Iowa Landscape, M.D. Tomer, K.E. Schilling, C.A. Cambardella, P. Jacobson, P. Drobney
Groundwater Nutrient Concentrations During Prairie Reconstruction On An Iowa Landscape, M.D. Tomer, K.E. Schilling, C.A. Cambardella, P. Jacobson, P. Drobney
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
One anticipated benefit of ecosystem restoration is water quality improvement. This study evaluated NO3-N and phosphorus in subsurface waters during prairie establishment following decades of row-crop agriculture. A prairie seeding in late 2003 became established in 2006. Wells and suction cup samplers were monitored for NO3-N and phosphorus. Nitrate-N varied with time and landscape position. Nondetectable NO3-N concentrations became modal along ephemeral drainageways in 2006, when average concentrations in uplands first became <10mg NO3-N L−1. This decline continued and upland groundwater averaged near 2mg NO3-N L−1 after 2007. The …
Fertilizer Rate Effects On Forage Yield Stability And Nutrient Uptake Of Midland Bermudagrass, John A. Guretzky, Maru K. Kering, Jagadeesh Mosali, Eddie Funderburg, Jon T. Biermacher
Fertilizer Rate Effects On Forage Yield Stability And Nutrient Uptake Of Midland Bermudagrass, John A. Guretzky, Maru K. Kering, Jagadeesh Mosali, Eddie Funderburg, Jon T. Biermacher
Department of Agronomy and Horticulture: Faculty Publications
Our objectives were to document effects of nitrogen (N), phosphorus (P), and potassium (K) fertilizer rates on forage yields and uptake of N, P, and K by Midland bermudagrass [Cynodon dactylon (L.) Pers.] on a Minco fine, sandy loam in southern Oklahoma. After six years of this long-term experiment, forage yield responses to fertilization were mixed and depended on year. Stability analysis indicated forage yields responded positively to N fertilization during favorable weather conditions but negatively during poor weather conditions. Application of 112 kg N ha−1 provided the best yield stability and mean annual forage yield among treatments, …
Enzymatic Quantification Of Phytate In Animal Manure, Zhongqi He, Heidi W. Waldrip, C. Wayne Honeycutt, M. Susan Erich, Zachary N. Senwo
Enzymatic Quantification Of Phytate In Animal Manure, Zhongqi He, Heidi W. Waldrip, C. Wayne Honeycutt, M. Susan Erich, Zachary N. Senwo
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Phytate (inositol hexaphosphate) has been identified as a major organic phosphorus (P) form in soil, animal manure, and other environmental samples. Although a number of methods are available for quantitative isolation and determination of phytate, they are time-consuming and not amenable to routine analysis. We developed a simple, rapid method for enzymatic determination of phytate in animal manure. Animal manure was extracted by H2O, 1M hydrochloric acid (HCl), 0.1M sodium acetate (NaOAc, pH5.0) with or without 0.05M ethylenediaminetetraacetate (EDTA), and 0.25M or 0.5M sodium hydroxide (NaOH)–0.05M EDTA. Extracts were diluted (1/10–1/150) and adjusted to pH5.0 in sodium acetate …
Epic Evaluation Of The Impact Of Poultry Litter Application Timing On Nutrient Losses, H. Allen Torbert, Thomas J. Gerik, Wyatte L. Harman, Jimmy R. Williams, Melanie Magre
Epic Evaluation Of The Impact Of Poultry Litter Application Timing On Nutrient Losses, H. Allen Torbert, Thomas J. Gerik, Wyatte L. Harman, Jimmy R. Williams, Melanie Magre
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Recently, changes in the utilization practices of animal manures for fertilization have been encouraged to reduce the potential of nonpoint pollution of lakes and streams from agricultural land. However, the potential impact of changing some of these practices has not been fully studied. The objective of this study was to examine the potential impact of limiting poultry litter application times on nutrient movement important to water quality. The WinEPIC model was used to simulate poultry litter applications during the winter months and chemical fertilizer application, with both cool season and warm season grass pastures on the major soil regions of …
Effect Of Drying On Phosphorus Distribution In Poultry Manure, Heidi W. Dail, Zhongqi He, M. Susan Erich, C. Wayne Honeycutt
Effect Of Drying On Phosphorus Distribution In Poultry Manure, Heidi W. Dail, Zhongqi He, M. Susan Erich, C. Wayne Honeycutt
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Laboratory drying may alter manure phosphorus (P) distribution. The effects of freeze, air (22 °C), and oven (65 °C) drying on sequentially fractioned poultry manure P were examined. Higher drying temperatures resulted in lower percentage of dry matter. Increased H2O- and decreased sodium bicarbonate (NaHCO3)-extractable P with drying provided evidence that drying increases poultry manure P solubility. Labile fractions were predominantly inorganic P (Pi), whereas sodium hydroxide (NaOH) and hydrochloric acid (HCl) fractions had significant amounts of organic P (Po). Drying altered H2O- and NaHCO3-extractable Pi but …
Elemental Uptake In Relation To Root Characteristics Of Tall Fescue, Glenn E. Shewmaker, Douglas A. Johnson, Henry F. Mayland, Scott A. Martin, Susie B. Hansen
Elemental Uptake In Relation To Root Characteristics Of Tall Fescue, Glenn E. Shewmaker, Douglas A. Johnson, Henry F. Mayland, Scott A. Martin, Susie B. Hansen
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
HiMag, an accession of tall fescue (Festuca arundinacea Schreb.), was selected for high magnesium (Mg) concentration in leaves to reduce grass tetany risk to ruminants. However, the mechanism for enhanced Mg uptake in HiMag leaves has not been determined. The objective was to investigate if increased Mg uptake in HiMag could be explained by differences in elemental distribution among plant parts, root characteristics, or organic acid concentrations compared to its parental cultivars, ‘‘Kentucky 31’’ (KY31) and ‘‘Missouri 96’’ (MO96). The study was conducted on a surface-irrigated calcareous Portneuf silt loam (coarse-silty, mixed, mesic, Durinodic Xeric Haplocalcid). Vegetation and soil …
Levels And Changes Of Soil Phosphorus In Subtropical Beef Cattle Pastures, Gilbert C. Sigua, Mary J. Williams, Samuel W. Coleman
Levels And Changes Of Soil Phosphorus In Subtropical Beef Cattle Pastures, Gilbert C. Sigua, Mary J. Williams, Samuel W. Coleman
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Long-term pasture management is believed to change soil chemical properties, but little is known about whether pasture management, such as fertilizer application, grazing, or haying can initiate such change in sandy and well-drained subtropical beef pastures. The objective of this study was to investigate the long term effect of pasture management (grazing+haying, GZ+HY) on soil phosphorus (P) dynamics (levels and changes) in subtropical beef cattle pastures with bahiagrass (BG, Paspalum notatum) and rhizoma peanut (RP, Arachis glabrata) with (WP) or without (WNP) P fertilization in Brooksville, FL from 1988 to 2000. Soil P dynamics in Subtropical Agricultural Research …
Atrazine And Fertilizer Effects On Sandhills Sub- Irrigated Meadow, John J. Brejda, Lowell E. Moser, Steven S. Waller, Stephen R. Lowry, Patrick E. Reece, James T. Nichols
Atrazine And Fertilizer Effects On Sandhills Sub- Irrigated Meadow, John J. Brejda, Lowell E. Moser, Steven S. Waller, Stephen R. Lowry, Patrick E. Reece, James T. Nichols
Department of Agronomy and Horticulture: Faculty Publications
Many Nebraska Sandhills sub irrigated meadows have shifted to predominantly cool-season grasses. Meadows are often cut in July when forage quality of cool-season is lower than that of warm season species. The objective of this research was to evaluate a one-time application of atrazine [6-chloro-N-ethyl-N’-(l-methylethyl)- 1,3,5-triazine-2,4-diamine] in restoring dominance of warm-season grasses and to determine lf nitrogen (N) with and without phosphorus (P) would enhance or prolong the atrazine effect on specks composition, yield, crude protein, and in vitro dry matter digestibility (IVDMD). Atrazine WM applied once at 0,2.2, and 3.3 kg/ha In spring or fall 1983 and 1984 to …
Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson
Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
In order to elaborate all aspects of the sulfur problem in alfalfa production, a series of field, greenhouse and laboratory experiments was initiated to determine: 1. The influence of sulfur fertilization on the yield of alfalfa in Nebraska. 2. The influence of sulfur fertilization on the protein, vitamin A, and sulfur contents of alfalfa. 3. The sulfur supplying capacities of various soils under field and greenhouse conditions. 4. The sulfur content of precipitation at widely scattered points in Nebraska. 5. Soil properties associated with sulfur deficiency. 6. Optimum methods for estimating the sulfur status of soils by soil testing. The …
Fertilization And Improvement Of Native Subirrigated Meadows In Nebraska, P. Ehlers, G. Viehmeyer, R. Ramig, E. M. Brouse
Fertilization And Improvement Of Native Subirrigated Meadows In Nebraska, P. Ehlers, G. Viehmeyer, R. Ramig, E. M. Brouse
Nebraska Agricultural Experiment Station: Historical Circulars
It is the purpose of this circular to summarize the 1948-51 results of fertilizer applications upon subirrigated native meadows. It is upon these lands that the cattleman depends to a large extent for winter feed.