Search Results - "Donk, Simon"

Effect of Growth Promotants on the Occurrence of Endogenous and Synthetic Steroid Hormones on Feedlot Soils and in Runoff from Beef Cattle Feeding Operations by Bartelt-Hunt, Shannon L, Snow, Daniel D, Kranz, William L, Mader, Terry L, Shapiro, Charles A, Donk, Simon J. van, Shelton, David P, Tarkalson, David D, Zhang, Tian C

“…Supplements and growth promotants containing steroid hormones are routinely administered to beef cattle to improve feeding efficiency, reduce behavioral…”
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Impacts of Corn Residue Grazing and Baling on Wind Erosion Potential in a Semiarid Environment by Blanco-Canqui, Humberto, Tatarko, John, Stalker, Aaron L., Shaver, Tim M., Donk, Simon J.

“…Core Ideas Corn residue baling increased the wind‐erodible fraction relative to no baling. Cattle grazing of corn residues had smaller effects on wind erosion…”
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Effect of rainfall timing and tillage on the transport of steroid hormones in runoff from manure amended row crop fields by Biswas, Sagor, Kranz, William L., Shapiro, Charles A., Snow, Daniel D., Bartelt-Hunt, Shannon L., Mamo, Mitiku, Tarkalson, David D., Zhang, Tian C., Shelton, David P., van Donk, Simon J., Mader, Terry L.

“…•Hormones and metabolites were detected in runoff from test plots fertilized with cattle manure.•Composting can reduce the hormone concentration in manure…”
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Does Cattle Grazing and Baling of Corn Residue Increase Water Erosion? by Blanco-Canqui, Humberto, Stalker, Aaron L., Rasby, Rick, Shaver, Tim M., Drewnoski, Mary E., Donk, Simon, Kibet, Leonard

“…Core Ideas Water erosion did not increase after one season of grazing, but it significantly increased after seven seasons of grazing. Baling increased water…”
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Economic Return versus Crop Water Productivity of Maize for Various Nitrogen Rates under Full Irrigation, Limited Irrigation, and Rainfed Settings in South Central Nebraska by Rudnick, Daran, Irmak, Suat, Ferguson, Richard, Shaver, Tim, Djaman, Koffi, Slater, Glen, Bereuter, Aaron, Ward, Nicholas, Francis, Dennis, Schmer, Marty, Wienhold, Brian, Van Donk, Simon

“…AbstractField research was conducted at the University of Nebraska-Lincoln South Central Agricultural Laboratory (SCAL) located near Clay Center, NE, in the…”
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Effect of amount and timing of subsurface drip irrigation on corn yield by van Donk, Simon J., Petersen, James L., Davison, Don R.

“…A field study was conducted at North Platte, Nebraska in 2007–2009, imposing eight irrigation treatments, ranging from dryland to fully irrigated. Four of the…”
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Effect of composting on the fate of steroids in beef cattle manure by BARTELT-HUNT, Shannon L, DE VIVO, Shannon, JOHNSON, Leslie, SNOW, Daniel D, KRANZ, William L, MADER, Terry L, SHAPIRO, Charles A, VAN DONK, Simon J, SHELTON, David P, TARKALSON, David D, ZHANG, Tian C

“…In this study, the fate of steroid hormones in beef cattle manure composting is evaluated. The fate of 16 steroids and metabolites was evaluated in composted…”
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Effects of nitrogen application frequency via subsurface drip irrigation on corn development and grain yield by van Donk, Simon J., Shaver, Tim M.

“…Subsurface drip irrigation (SDI) has not only potential for water conservation, but also for improving nutrient use efficiency. Two nitrogen (N) application…”
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Influence of Soil Properties and Test Conditions on Sorption and Desorption of Testosterone by Ma, Rui, Zhang, Tian C, Bartelt-Hunt, Shannon L, Qi, Yong, Kranz, William L, Snow, Daniel D, Mader, Terry L, Shapiro, Charles A, Shelton, David P, van Donk, Simon J, Tarkalson, David D, Ensley, Steve

“…AbstractIn this study, batch sorption and desorption experiments were conducted for testosterone using four agricultural soils and five clay minerals…”
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Effect of nitrogen application timing on corn production using subsurface drip irrigation by Tarkalson, David D, Van Donk, Simon J, Petersen, James L

“…The use of subsurface drip irrigation (SDI) in row-crop agriculture is increasing because of potential increases in water and nutrient use efficiency…”
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Wind erosion from military training lands in the Mojave Desert, California, U.S.A by van Donk, Simon J, Huang, Xuewen, Skidmore, Edward L, Anderson, Alan B, Gebhart, Dick L, Prehoda, Valerie E, Kellogg, Elizabeth M

“…Military training activities reduce vegetation cover, disturb crusts, and degrade soil aggregates, making the land more vulnerable to wind erosion. The…”
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Measurement and simulation of wind erosion, roughness degradation and residue decomposition on an agricultural field by Van Donk, Simon J, Skidmore, Edward L

“…The Wind Erosion Prediction System (WEPS) includes submodels to simulate soil erosion by wind, roughness degradation and residue decomposition. These WEPS…”
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Heat transfer mechanisms in mulch materials by Van Donk, Simon Johannes

“…The goal of this project was to quantify heat transport through several common dry mulch materials and identify and quantify heat transport mechanisms:…”
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Heat transfer mechanisms in mulch materials by Van Donk, Simon Johannes

“…The goal of this project was to quantify heat transport through several common dry mulch materials and identify and quantify heat transport mechanisms:…”
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