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Regenerating Agricultural Landscapes With Perennial Groundcover For Intensive Crop Production, Kenneth J. Moore, Robert P. Anex, Amani E. Elobeid, Shuizhang Fei, Cornelia B. Flora, A. Susana Goggi, Keri L. Jacobs, Prashant Jha, Amy L. Kaleita, Douglas L. Karlen, David A. Laird, Andrew W. Lenssen, Thomas Lubberstedt, Marshall D. Mcdaniel, D. Raj Raman, Sharon L. Weyers Jan 2019

Regenerating Agricultural Landscapes With Perennial Groundcover For Intensive Crop Production, Kenneth J. Moore, Robert P. Anex, Amani E. Elobeid, Shuizhang Fei, Cornelia B. Flora, A. Susana Goggi, Keri L. Jacobs, Prashant Jha, Amy L. Kaleita, Douglas L. Karlen, David A. Laird, Andrew W. Lenssen, Thomas Lubberstedt, Marshall D. Mcdaniel, D. Raj Raman, Sharon L. Weyers

Agronomy Publications

The Midwestern U.S. landscape is one of the most highly altered and intensively managed ecosystems in the country. The predominant crops grown are maize (Zea mays L.) and soybean [Glycine max (L.) Merr]. They are typically grown as monocrops in a simple yearly rotation or with multiple years of maize (2 to 3) followed by a single year of soybean. This system is highly productive because the crops and management systems have been well adapted to the regional growing conditions through substantial public and private investment. Furthermore, markets and supporting infrastructure are highly developed for both crops. As maize ...


Twin-Screw Extrusion Processing Of Plant-Based Blends Using Graded Levels Of High Protein Fermented Soybean Meal (Fsbm), Parisa Fallahi, Kurt A. Rosentrater, K. Muthukumarappan Jan 2019

Twin-Screw Extrusion Processing Of Plant-Based Blends Using Graded Levels Of High Protein Fermented Soybean Meal (Fsbm), Parisa Fallahi, Kurt A. Rosentrater, K. Muthukumarappan

Agricultural and Biosystems Engineering Publications

Fast-paced growth in global aquaculture has elevated concerns about the high costs of fish farming production and potential water pollution. Thus, finding eco-friendly and more sustainable alternative protein sources for fish diets is of vital importance to the industry. A twin-screw extrusion processing study was performed using three ingredient blends formulated with graded levels of high protein fermented soybean meal (FSBM) (0, 80% and 100% db fishmeal replacement) along with calculated amounts of other ingredients to meet the rainbow trout diets’ requirements. Increasing the FSBM content from 0% to 100% resulted in a substantial increase in brightness, greenness, and yellowness ...


The Effect Of Five Biomass Cropping Systems On Soil-Saturated Hydraulic Conductivity Across A Topographic Gradient, Lisa A. Schulte-Moore, Matthew J. Helmers, Randall K. Kolka Sep 2017

The Effect Of Five Biomass Cropping Systems On Soil-Saturated Hydraulic Conductivity Across A Topographic Gradient, Lisa A. Schulte-Moore, Matthew J. Helmers, Randall K. Kolka

Agricultural and Biosystems Engineering Publications

Understanding the environmental impact of bioenergy crops is needed to inform bioenergy policy development. We determined the effects of five biomass cropping systems—continuous maize (Zea mays), soybean (Glycine max)-triticale (Triticosecale ×)/soybean-maize, maize-switchgrass (Panicum virgatum), triticale/sorghum (Sorghum bicolor), and triticale-aspen (Populus alba × P. grandidentata)—on soil-saturated hydraulic conductivity (K S ) across a toposequence in central Iowa, USA. We compared data from the time of cropping system establishment in 2009 to 4 years post-establishment. Both our 2009 and 2013 data confirmed that cropping system impacts on K S vary by landscape position. We found that differences in cropping system ...


Techno-Economic Modeling Of A Degummed Soybean Oil Biorefinery In 2005 & 2012, Bailley A. Richardson, Kurt A. Rosentrater Jul 2013

Techno-Economic Modeling Of A Degummed Soybean Oil Biorefinery In 2005 & 2012, Bailley A. Richardson, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

As the biofuels industry expands, it is important to identify and quantize potential capital, operational, material, and utility costs, as well as possible sales prices for the biofuels and coproducts. Many industries use computer simulation programs for this function, as well as to see how using different operations can affect the overall production at the plant. The objective of this project was to determine how various operation scenarios affected capital, operational, material, and utility costs of a biodiesel biorefinery. These costs were examined using a techno-economic modeling program for a degummed soybean oil plant. It was clear after seeing economic ...


Development Of Single-Seed Near-Infrared Spectroscopic Predictions Of Corn And Soybean Constituents Using Bulk Reference Values And Mean Spectra, Paul R. Armstrong, Jasper G. Tallada, Charles R. Hurburgh Jr., David F. Hildebrand, James E. Specht Jan 2011

Development Of Single-Seed Near-Infrared Spectroscopic Predictions Of Corn And Soybean Constituents Using Bulk Reference Values And Mean Spectra, Paul R. Armstrong, Jasper G. Tallada, Charles R. Hurburgh Jr., David F. Hildebrand, James E. Specht

Agricultural and Biosystems Engineering Publications

Rapid, non-destructive single-seed compositional analyses are useful for many areas of crop science, including breeding and genetics. Seeds are sometimes unique and require preservation due to small samples, which necessitates development of methods for total non-destructive measurement. Near-infrared reflectance spectroscopy (NIRS) can be used for non-destructive single-seed composition prediction, but the reference methods used to develop prediction models are usually destructive. Reference methods are costly, and extensive sets of seeds must be used to obtain prediction models for multiple constituents. In this research, single-seed NIRS prediction models were developed for common constituents of soybeans and corn using composition values from ...


Effects Of Full, Abbreviated, And No Clean-Outs On Commingled Grain During Combine Harvest, H. Mark Hanna, Darren H. Jarboe Jan 2011

Effects Of Full, Abbreviated, And No Clean-Outs On Commingled Grain During Combine Harvest, H. Mark Hanna, Darren H. Jarboe

Agricultural and Biosystems Engineering Publications

Growers of identity-preserved crops desire to keep grain separate throughout the production process. Earlier research has demonstrated that some locations in a combine such as cleaning and threshing areas harbor relatively smaller amounts of grain, but require relatively large amounts of time to clean. Omitting clean-out in some areas and flushing residual grain with new grain in the first grain tank full may lower commingled grain concentration to acceptable levels for some customers.


Impact Of Fertilizer Application Timing On Drainage Nitrate Levels, Reid D. Christianson, Matthew J. Helmers, Carl H. Pederson, Peter A. Lawlor Jun 2009

Impact Of Fertilizer Application Timing On Drainage Nitrate Levels, Reid D. Christianson, Matthew J. Helmers, Carl H. Pederson, Peter A. Lawlor

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Nitrate loss from drainage systems in Iowa and other upper Midwestern states is a concern relative to local water supplies as well as the hypoxic zone in the Gulf of Mexico. As a result, there is a need to quantify how various nitrogen management practices impact nitrate loss. One practice that is commonly mentioned as a potential strategy to reduce nitrate loss is to vary fertilizer application timing and specifically apply nitrogen as close to when the growing crop needs it as possible. At a site in Gilmore City, Iowa, a number of fertilizer timing and rate schemes within a ...


Grain Residuals And Time Requirements For Combine Cleaning, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick Jan 2009

Grain Residuals And Time Requirements For Combine Cleaning, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick

Agricultural and Biosystems Engineering Publications

Emerging identity-preserved grain markets depend on avoidance of commingling grain at harvest. Knowledge of where grain resides in a combine, cleaning labor requirements, and resulting purity levels would assist producers. Measurements were made of grain and other material residing in different areas of rotary- and cylinder-type combines in replicated clean-outs during corn and soybean harvest and also in preliminary clean-outs during oat harvest. Concentration of the prior (i.e., commingled) grain was measured in the first grain harvested of the subsequent crop.


Nozzle And Carrier Application Effects On Control Of Soybean Leaf Spot Diseases, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf Jan 2009

Nozzle And Carrier Application Effects On Control Of Soybean Leaf Spot Diseases, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf

Agricultural and Biosystems Engineering Publications

Increased soybean foliar disease potential has heightened grower interest in fungicide application techniques. Application field trials comparing application rate [187 vs. 112 L/ha (20 vs. 12 gal/acre)], nozzle style (twin-orifice; single-orifice) and spray quality (fine vs. medium and coarse spray quality), and application technique (with and without air-assist) along with an unsprayed check were done at two locations over two years. Fungicide deposition (coverage and droplet size) and disease severity in the bottom, middle, and top parts of the plant canopy, and soybean yield were measured.


Combine Effects On Commingling And Residual Grain, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick Feb 2007

Combine Effects On Commingling And Residual Grain, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Emerging identity-preserved grain markets depend on avoidance of commingling grain at harvest. Knowledge of where grain resides in a combine, cleaning labor requirements, and resulting purity levels would assist producers. Measurements were made of grain and other material residing in different areas of rotary- and cylinder-type combines in replicated clean-outs during corn and soybean harvest and also in preliminary clean-outs during oat harvest. Concentration of the prior (i.e. commingled) grain was measured in the first grain harvested of the subsequent crop.

Total material remaining in the combine ranged from 84 to 186 lb, 61% of which was whole grain ...


Nozzle And Carrier Application Effects On Control Of Soybean Leaf Spot Diseases, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf Jan 2007

Nozzle And Carrier Application Effects On Control Of Soybean Leaf Spot Diseases, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

A two-site, two-year field application experiment investigated fungicide coverage in a fully-developed soybean canopy. Application treatments included “high-rate” (187 l/ha; 20 gal/acre) and “low-rate” (112 l/ha;12 gal/acre) with fine-droplet two-orifice tips, medium-droplet two-orifice tip at 187 l/ha (20 gal/acre), a coarse-droplet single-orifice “herbicide-style” tip at 168 l/ha (18 gal/ac), and an air-assisted spray treatment. Droplet coverage and size, and foliar disease severity in the lower, middle, and top parts of the plant canopy, and crop yield were measured.

Droplet size generally followed expected manufacturer specifications. Percentage area covered and drops/cm ...


Effects Of Nozzle Type And Carrier Application On The Control Of Leaf Spot Diseases Of Soybean, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf Jan 2006

Effects Of Nozzle Type And Carrier Application On The Control Of Leaf Spot Diseases Of Soybean, H. Mark Hanna, Alison E. Robertson, W. Mark Carlton, Robert E. Wolf

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Midwestern soybean growers seek information on effective application of foliar fungicides that do not translocate throughout the plant. Field application treatments included using a two-orifice nozzle tip producing fine droplets at 187 l/ha (20 gal/ac) and 112 l/ha (12 gal/ac) and a single-orifice nozzle tip producing a coarse droplet size more typical of herbicide applications at 168 l/ha (18 gal/ac). In addition an air-assisted sprayer was used at one of the two sites of the trials. Measurements included droplet size, droplet coverage, and foliar disease severity in the top, middle, and lower parts of ...


Grain Residuals And Time Requirements For Combine Cleaning, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick Jan 2006

Grain Residuals And Time Requirements For Combine Cleaning, H. Mark Hanna, Darren H. Jarboe, Graeme R. Quick

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Emerging identity-preserved grain markets depend on avoidance of commingling grain at harvest. Knowledge of where grain resides in a combine, cleaning labor requirements, and resulting purity levels would assist producers. Measurements were made of grain and other material residing in different areas of rotary- and cylinder-type combines in replicated clean-outs during corn and soybean harvest and also in preliminary clean-outs during oat harvest. Concentration of the prior (i.e. commingled) grain was measured in the first grain harvested of the subsequent crop.

Total material remaining in the combine ranged from 84 to 186 lb, 61% of which was whole grain ...


Technical Notes: Aspiration Cleaning Of Soybeans, Charles R. Hurburgh Jr., Jeff Buresch, Glen R. Rippke Jan 1996

Technical Notes: Aspiration Cleaning Of Soybeans, Charles R. Hurburgh Jr., Jeff Buresch, Glen R. Rippke

Agricultural and Biosystems Engineering Publications

Soybean samples containing 0.5 to 4.0% foreign material and 3 to 22% splits were aspiration cleaned at air velocities of 19 m/s (3500 ft/min) and 10 m/s (1970 ft/min). Both airflow rates removed 80% of the total non-soybean material, and removed similar amounts of splits. The high airflow rate removed 1.1% of whole soybeans compared to 0.4% at low airflow rate. At either airflow rate, the aspirator removed less saleable material and more non-grain material than previously reported for screen cleaning. Aspiration could be an acceptable method for meeting reduced foreign material ...


Mechanical Damage To Soybeans During Harvesting, Roy Edward Young Jan 1968

Mechanical Damage To Soybeans During Harvesting, Roy Edward Young

Retrospective Theses and Dissertations

No abstract provided.


Soybean Harvesting Losses With The Combine, Aubrey Cortez Everett Jan 1949

Soybean Harvesting Losses With The Combine, Aubrey Cortez Everett

Retrospective Theses and Dissertations

No abstract provided.