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Effects Of Residue Removal And Tillage On Greenhouse Gas Emissions In Continuous Corn Systems As Simulated With Rzwqm2, Haomiao Cheng, Kexin Shu, Zhiming Qi, Liwang Ma, Virginia L. Jin, Youjia Li, Marty R. Schmer, Brian J. Wienhold, Shaoyuan Feng
Effects Of Residue Removal And Tillage On Greenhouse Gas Emissions In Continuous Corn Systems As Simulated With Rzwqm2, Haomiao Cheng, Kexin Shu, Zhiming Qi, Liwang Ma, Virginia L. Jin, Youjia Li, Marty R. Schmer, Brian J. Wienhold, Shaoyuan Feng
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Agricultural production is a major source of carbon dioxide (CO2) and nitrous oxide (N2O) globally. The effects of conservation practices on soil CO2 and N2O emissions remain a high degree of uncertainty. In this study, soil CO2 and N2O emissions under different residue and tillage practices in an irrigated, continuous corn system, were investigated using the Root Zone Water Quality Model (RZWQM2). Combinations of no/high stover removal (NR and HR, respectively) and no-till/conventional tillage (NT and CT, respectively) field experiments were tested over the four crop-years (Apr. 2011–Apr. 2015). The model was calibrated using the NRCT, and validated with other …
Greenhouse Gas Emissions From Beef Feedlot Surface Materials As Affected By Diet, Moisture, Temperature, And Time, Bryan L. Woodbury, John E. Gilley, David B. Parker, Bobbi S. Stomer
Greenhouse Gas Emissions From Beef Feedlot Surface Materials As Affected By Diet, Moisture, Temperature, And Time, Bryan L. Woodbury, John E. Gilley, David B. Parker, Bobbi S. Stomer
Department of Biological Systems Engineering: Papers and Publications
A laboratory study was conducted to measure the effects of diet, moisture, temperature, and time on greenhouse gas (GHG) emissions from feedlot surface materials (FSM). The FSM were collected from open-lot pens where beef cattle were fed either a dry-rolled corn (DRC) diet containing no wet distillers grains with solubles (WDGS) or a DRC diet containing 35% WDGS. The FSM were collected, air-dried or mixed with 3.0 L of water to represent dry or wet conditions, and then incubated at temperatures of 5°C, 15°C, 25°C, or 35°C. Static flux chambers were used to quantify GHG emissions over a 14-day period. …
Soil Greenhouse Gas Emissions In Response To Corn Stover Removal And Tillage Management Across The Us Corn Belt, Virginia L. Jin, John M. Baker, Jane M.F. Johnson, Douglas Karlen, R. Michael Lehman, Shannon L. Osborne, Thomas J. Sauer, Diane E. Stott, Gary E. Varvel, Rodney T. Venterea, Marty R. Schmer, Brian J. Wienhold
Soil Greenhouse Gas Emissions In Response To Corn Stover Removal And Tillage Management Across The Us Corn Belt, Virginia L. Jin, John M. Baker, Jane M.F. Johnson, Douglas Karlen, R. Michael Lehman, Shannon L. Osborne, Thomas J. Sauer, Diane E. Stott, Gary E. Varvel, Rodney T. Venterea, Marty R. Schmer, Brian J. Wienhold
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
In-field measurements of direct soil greenhouse gas (GHG) emissions provide critical data for quantifying the net energy efficiency and economic feasibility of crop residue based bioenergy production systems. A major challenge to such assessments has been the paucity of field studies addressing the effects of crop residue removal and associated best practices for soil management (i.e., conservation tillage) on soil emissions of carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4). This regional survey summarizes soil GHG emissions from nine maize production systems evaluating different levels of corn stover removal under conventional or conservation …