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2006

Bioresource and Agricultural Engineering

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Full-Text Articles in Life Sciences

Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, Bradley Allen Miller, Matt Helmers Dec 2006

Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, Bradley Allen Miller, Matt Helmers

Ecology, Evolution and Organismal Biology Reports

The primary objective of this project was to estimate the nitrate reduction that could be achieved using restored wetlands as nitrogen sinks in tile-drained regions of the upper Mississippi River (UMR) and Ohio River basins. This report provides an assessment of nitrate concentrations and loads across the UMR and Ohio River basins and the mass reduction of nitrate loading that could be achieved using wetlands to intercept nonpoint source nitrate loads. Nitrate concentration and stream discharge data were used to calculate stream nitrate loading and annual flow-weighted average (FWA) nitrate concentrations and to develop a model of FWA nitrate concentration ...


Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, B. A. Miller, Matthew J. Helmers Dec 2006

Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, B. A. Miller, Matthew J. Helmers

Agricultural and Biosystems Engineering Technical Reports and White Papers

The primary objective of this project was to estimate the nitrate reduction that could be achieved using restored wetlands as nitrogen sinks in tile-drained regions of the upper Mississippi River (UMR) and Ohio River basins. This report provides an assessment of nitrate concentrations and loads across the UMR and Ohio River basins and the mass reduction of nitrate loading that could be achieved using wetlands to intercept nonpoint source nitrate loads. Nitrate concentration and stream discharge data were used to calculate stream nitrate loading and annual flow-weighted average (FWA) nitrate concentrations and to develop a model of FWA nitrate concentration ...


Disaster Recovery—Managing Immature Crops For Grain Or Silage, Stephen K. Barnhart, Roger W. Elmore, Palle Pedersen, H. Mark Hanna Dec 2006

Disaster Recovery—Managing Immature Crops For Grain Or Silage, Stephen K. Barnhart, Roger W. Elmore, Palle Pedersen, H. Mark Hanna

Agriculture and Environment Extension Publications

Tips on managing crops that may not mature before the first killing freeze of fall.


Spray Equipment Selection For Best Protection Against Soybean Rust And Aphid, Erdal Ozkan Nov 2006

Spray Equipment Selection For Best Protection Against Soybean Rust And Aphid, Erdal Ozkan

Proceedings of the Integrated Crop Management Conference

Fungicides manufactured to control soybean rust are effective; however, successful control of this disease will mostly depend on proper application methods. Spray coverage and deposition from 9 application equipment/spray nozzles were analyzed. In general, the spray treatments with air assistance were more effective in spraying rust fungicides than the treatments with the conventional boom sprayer. Spray performances from the boom sprayer with a canopy opener were very similar to the air assisted spray treatments, and were better than other treatments with the boom sprayer. Twinjet, Turbo Dual pattern and hollow cone nozzles produced lower spray performances than single-flow pattern ...


Sourcing Corn For Ethanol: Effects Of Increased Local Processing, Connie L. Hardy, Howard E. Shepherd, Charles R. Hurburgh Jr., Mary S. Holz-Clause Nov 2006

Sourcing Corn For Ethanol: Effects Of Increased Local Processing, Connie L. Hardy, Howard E. Shepherd, Charles R. Hurburgh Jr., Mary S. Holz-Clause

Proceedings of the Integrated Crop Management Conference

Rapid growth of ethanol production continues to generate many questions related to future analysis, shifts in existing businesses and policy development. In Iowa, new dry-grind ethanol processing plant construction is announced frequently, financed by either local or remote investor groups. New dry-grind ethanol plants are also being added to existing wet milling operations. As these markets develop, there will be innovation in contracts, price discovery and market information. There will also be changes to supplier interaction and service aspects as well. One of the growing concerns is the balance of corn supplies between new ethanol demand and existing feed/export ...


Economic And Environmental Considerations For Drainage Design, Matthew J. Helmers, Ranvir Singh Nov 2006

Economic And Environmental Considerations For Drainage Design, Matthew J. Helmers, Ranvir Singh

Proceedings of the Integrated Crop Management Conference

Water table management through the use of artificial subsurface drainage systems is of primary importance in humid areas with poorly or somewhat poorly drained soils to maximize agricultural productivity Excess precipitation in Iowa and many other Mississippi/Ohio River watershed agricultural production states is removed artificially via subsurface drainage systems that intercept and usually divert it to surface waters. Subsurface drainage systems have been installed to allow timely seedbed preparation, planting and harvesting and to protect crops from extended periods of flooded soil conditions. The tradeoff of improved subsurface drainage is a significant increase in the losses of nitrate-nitrogen (Gilliam ...


Foliar Fungicide Application Techniques On Soybeans, H. Mark Hanna, Alison Robertson, W. Mark Carlton, Robert E. Wolf Nov 2006

Foliar Fungicide Application Techniques On Soybeans, H. Mark Hanna, Alison Robertson, W. Mark Carlton, Robert E. Wolf

Proceedings of the Integrated Crop Management Conference

Soybeans (Glycine max L.) are a major commodity crop grown on over 29 million hectare (72 million acres) in the United States. A large part of the cropland base in Iowa, 5 million hectare (11 to 13 million acres) annually, is devoted to soybean production. Although long term crop yield trends are upward, soybean yield increases have been more stagnant than corn, the common companion rotational crop, causing growers to question factors such as disease that might be slowing yield growth. In late 2004 Asian Soybean Rust (Phahopsora pachyrhizi) was detected in the United States. Because of the potential for ...


Ethanol Webcast Archived Online, Jean Mcguire Nov 2006

Ethanol Webcast Archived Online, Jean Mcguire

Integrated Crop Management News

The Perspectives on Present and Future Corn-Based Ethanol Industry webcast was presented by Iowa State University (ISU) Extension on Monday, November 13. An archive of the program is available athttp://www.extension.iastate.edu/webcast/archive.htm. Seven Iowa State University economists presented economic information on several aspects of the industry during the 3-hour, 15-minute program. Links to papers offering additional information on each topic and the PowerPoint each presenter used are available at http://www.extension.iastate.edu/ag/ethanol.html.


Hydrologic Properties Of Pervious Concrete, Joe D. Luck, Stephen R. Workman, Stephen F. Higgins, Mark S. Coyne Nov 2006

Hydrologic Properties Of Pervious Concrete, Joe D. Luck, Stephen R. Workman, Stephen F. Higgins, Mark S. Coyne

Plant and Soil Sciences Faculty Publications

Pervious concrete is concrete made by eliminating most or all of the fine aggregate (sand) in the concrete mix, which allows interconnected void spaces to be formed in the hardened product. These interconnected void spaces allow the concrete to transmit water at relatively high rates. The main objective of this project was to conduct research on the potential application of pervious concrete in agricultural settings, specifically for use in animal feed lots, manure storage pads, animal manure and bedding compost facilities, or floor systems in animal buildings. Laboratory tests were conducted on replicated samples of pervious concrete formed from two ...


Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin Nov 2006

Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin

Agricultural and Biosystems Engineering Publications

Volatile organic compounds (VOCs) and odors in cattle rumen gas have been characterized by in-vivo headspace sampling by solid-phase microextraction (SPME) and analysis by gas chromatography–mass spectrometry–olfactometry (GC–MS–O). A novel device enabling headspace SPME (HS-SPME) sampling through a cannula was designed, refined, and used to collect rumen gas samples from steers. A Carboxen–polydimethylsiloxane (PDMS) fiber (85 μm) was used for SPME sampling. Fifty VOCs from ten chemical groups were identified in the rumen headspace. The VOCs identified had a wide range of molecular weight (MW) (34 to 184), boiling point (−63.3 to 292 °C ...


The Importance Of Emerging Biobased Industries To Engineering And Technology, Kurt A. Rosentrater, R. Balamuralikrishma Oct 2006

The Importance Of Emerging Biobased Industries To Engineering And Technology, Kurt A. Rosentrater, R. Balamuralikrishma

Kurt A. Rosentrater

Our society has developed an insatiable demand for energy and material goods. Historically, these needs have been met primarily by fossil fuels and other non-renewable raw materials. As environmental concerns grow, however, renewable resources are gaining increased attention. This paper examines the emergence and importance that biobased industries are increasingly beginning to play. A biobased enterprise, similar in concept to a traditional refinery or factory, utilizes conversion technologies to produce various products. These operations are rapidly increasing both in number as well as in capacity throughout this country, and are poised to add significantly to the nation’s energy and ...


Analytical And Experimental Studies Of Properties Of Ethanol Coproduct-Filled Plastics, Robert Tatara, Andrew Otieno, Srikrishna Suraparaju, Kurt A. Rosentrater Oct 2006

Analytical And Experimental Studies Of Properties Of Ethanol Coproduct-Filled Plastics, Robert Tatara, Andrew Otieno, Srikrishna Suraparaju, Kurt A. Rosentrater

Kurt A. Rosentrater

As the renewable fuels industry continues to grow, the quantity of resulting byproducts has expanded in tandem. Currently, these materials are primarily used for animal feed, but at some point will saturate the animal feeds market. Thus, it is necessary to investigate alternative methods and applications by which these coproducts can be utilized. One potential application for these process residues involves plastics manufacturing. Due, in part, to the increasing cost of resins and conventional fillers, alternate fillers have been increasingly sought. Many of these include biological materials such as grasses, bamboo, starch, chicken feathers, soy protein, and cellulose. Not only ...


Grain Quality And Handling Issues For 2006, Charles R. Hurburgh Oct 2006

Grain Quality And Handling Issues For 2006, Charles R. Hurburgh

Integrated Crop Management News

The erratic rainfall patterns across Iowa have affected both yield and quality for corn and soybeans. Because more corn is likely to be stored for local use through the entire crop year, attention to harvest and storage management details will be very important.


Considerations For Manufacturing Bio-Based Plastic Products, Kurt A. Rosentrater, Andrew W. Otieno Oct 2006

Considerations For Manufacturing Bio-Based Plastic Products, Kurt A. Rosentrater, Andrew W. Otieno

Kurt A. Rosentrater

One engine that drives the United States’ economic growth is an ever-increasing demand for manufactured products, both at home and abroad. This increase has created a major concern for the environment in terms of disposing used goods and ensuring that these products are safe. As environmental concerns grow, however, renewable resources are gaining increasing attention, especially as industrial ecology and product biodegradability gain importance. Added to this, biological materials are increasingly being utilized to replace traditional materials in manufacturing. To aid both educators as well as researchers, this paper examines several considerations that are essential for manufacturing plastic products that ...


Rapid Aerosol Transmission Of Salmonella Among Turkeys In A Simulated Holding-Shed Environment, E. Harbaugh, Darrell W. Trampel, Irene V. Wesley, Steven J. Hoff, Ronald W. Griffith, H. Scott Hurd Oct 2006

Rapid Aerosol Transmission Of Salmonella Among Turkeys In A Simulated Holding-Shed Environment, E. Harbaugh, Darrell W. Trampel, Irene V. Wesley, Steven J. Hoff, Ronald W. Griffith, H. Scott Hurd

Agricultural and Biosystems Engineering Publications

Once turkeys arrive at Midwest processing plants, they are usually held in large open-sided sheds for 1 to 4 h, waiting to be unloaded. In hot, humid weather, large fans are used to cool the birds. The resultant air currents distribute a significant amount of dust to the turkeys. The dust created in this environment could be a factor in the number of Salmonella-contaminated turkeys entering slaughter plants. The objective of this study was to determine if rapid transmission of Salmonella in turkeys could occur from exposure toSalmonella-contaminated dust similar to what may be experienced in holding ...


Harvesting Lodged Corn, H. Mark Hanna Sep 2006

Harvesting Lodged Corn, H. Mark Hanna

Integrated Crop Management News

Nearly every year, adverse weather and crop conditions result in lodged corn in a few fields in the state. Lodging may be caused by wind storm, stalk rot or other disease, rootworm activity, or some combination of these. Regardless, it is a frustrating situation. Combine operators need to accept that harvest will not be routine in these areas and recognize that extra time will be required.


Moisture Basis Conversions For Grain Composition Data, Charles R. Hurburgh Jr. Sep 2006

Moisture Basis Conversions For Grain Composition Data, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

Weight percentages change with variations in moisture content. Dry samples have larger percentages of protein, oil, starch, and fiber than wet samples. Calculation of these percentages on a moisture basis other than the actual moisture at the time of test is strictly a mathematical formula.


Solid-Phase Microextraction As A Novel Air Sampling Technology For Improved, Gc—Olfactometry-Based Assessment Of Livestock Odors, Jacek A. Koziel, Lingshuang Cai, Donald W. Wright, Steven J. Hoff Aug 2006

Solid-Phase Microextraction As A Novel Air Sampling Technology For Improved, Gc—Olfactometry-Based Assessment Of Livestock Odors, Jacek A. Koziel, Lingshuang Cai, Donald W. Wright, Steven J. Hoff

Agricultural and Biosystems Engineering Publications

Air sampling and characterization of odorous livestock gases is one of the most challenging analytical tasks. This is because of low concentrations, physicochemical properties, and problems with sample recoveries for typical odorants. Livestock operations emit a very complex mixture of volatile organic compounds (VOCs) and other gases. Many of these gases are odorous. Relatively little is known about the link between characteristic VOCs/gases and, specifically, about the impact of characteristic odorants downwind from sources. In this research, solid-phase microextraction (SPME) is used for field air sampling of odors downwind from swine and beef cattle operations. Sampling time ranges from ...


Development And Testing Of A Low-Cost Condensation Detection System, Michael D. Montross, George A. Duncan, Richard S. Gates Jul 2006

Development And Testing Of A Low-Cost Condensation Detection System, Michael D. Montross, George A. Duncan, Richard S. Gates

Biosystems and Agricultural Engineering Faculty Publications

A condensation sensing and control system was designed to detect condensation using a commercially available leaf wetness sensor (LWS). The leaf wetness sensor was a variable resistance grid-type that responded to moisture on the surface. A circuit was developed to compare the LWS voltage output to a user specified reference voltage, and operate a relay for possible switching of a humidity control device (for example a fan and/or heater). The condensation detection system operation was validated in an environmental chamber in the laboratory using a heat exchanger and water bath. Condensate was immediately detected when the plate was cooled ...


Analysis Of The Influence Of Soil Roughness, Surface Crust And Soil Moisture On Spectral Reflectance, Amy L. Kaleita, Geetika Dilawari Jul 2006

Analysis Of The Influence Of Soil Roughness, Surface Crust And Soil Moisture On Spectral Reflectance, Amy L. Kaleita, Geetika Dilawari

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Soil moisture is an important component of numerous systems, influencing crop development, and runoff and infiltration partitioning, among other things. However, due to its spatial and temporal variability, it is difficult to estimate soil moisture consistently using conventional techniques such as gravimetric sampling, which is point-based and time-consuming. Therefore, to overcome this drawback in soil moisture estimation and mapping, and to facilitate its measurement spatially and temporarily, remote sensing is a promising technique. Measurement of soil surface reflectance in the visible and near infrared (VIS/NIR) may be used for this purpose. However, soil reflectance within this spectral range is ...


Improved Sensor For Agricultural Ventilation Fan Monitoring, Matthew J. Darr, Lingying Zhao, Christopher Gecik, Ji-Qin Ni Jul 2006

Improved Sensor For Agricultural Ventilation Fan Monitoring, Matthew J. Darr, Lingying Zhao, Christopher Gecik, Ji-Qin Ni

Matthew J. Darr

A new sensor for monitoring the continuous operation of exhaust fans in confined animal feeding operations (CAFOs) was developed and tested. The sensor relies on integrated Micro Electro Mechanical Systems (iMEMS) technology to accurately and reliably detect vibration on the external hood of agricultural fans, caused by the rotation of the fan blade. When coupled with a sensor to measure pressure drop across the fan and an appropriate fan curve, the vibration sensor can enable real-time fan specific collection of emission data from animal housing structures.The sensor integrated an iMEMS accelerometer along with various signal conditioning components to convert ...


Anaerobic Digestion Potential For Ethanol Processing Residues, Kurt A. Rosentrater, Heath R. Hall, Conly L. Hansen Jul 2006

Anaerobic Digestion Potential For Ethanol Processing Residues, Kurt A. Rosentrater, Heath R. Hall, Conly L. Hansen

Kurt A. Rosentrater

The production of corn-based ethanol in the U.S. is dramatically increasing, and consequently so is the quantity of byproduct materials generated from this processing sector. These coproduct streams are currently solely utilized as livestock feed, which is a route that provides ethanol processors with a substantial revenue source and significantly increases the profitability of the production process. With the construction and operation of many new plants in recent years, these residuals do, however, have much potential for value-added processing and utilization in other sectors as well. This option holds the promise of economic benefit for corn processors, especially if ...


Modeling Extrusion Processing Of Aquaculture Feed Incorporating Distillers Grains, Nehru Chevanan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater, James L. Julson Jul 2006

Modeling Extrusion Processing Of Aquaculture Feed Incorporating Distillers Grains, Nehru Chevanan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater, James L. Julson

Kurt A. Rosentrater

Three ingredient blends were prepared containing 20%, 30% and 40% DDGS and the net protein adjusted to 28% were formulated and extruded in a single screw extruder. Modeling of the viscosity of dough in the barrel by restricting the reference viscosity has shown shear thinning behavior, and the R2 value obtained between the apparent viscosity calculated by the concentric cylinder method, and viscosity calculated by the model equation, was found to be over 0.99. Increasing the DDGS content had resulted in higher mass flow rate and decreased absolute pressure inside the die. The torque requirement at 40% DDGS was ...


Effect Of Die Dimensions On Extruder Processing Parameters And Extrudate Properties For Distillers Grains Based Feeds, Nehru Chevanan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater, James L. Julson Jul 2006

Effect Of Die Dimensions On Extruder Processing Parameters And Extrudate Properties For Distillers Grains Based Feeds, Nehru Chevanan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater, James L. Julson

Kurt A. Rosentrater

Ingredient blends containing 28% protein with distillers dried grains with solubles, soy flour, corn flour, fish meal, mineral mix and vitamin mix was extruded in a C.W. Brabender single screw laboratory extruder using 7 different die nozzles. The die nozzle diameter (D), length (L) and L/D ratio of the dies were in the range of 2.0 mm to 6.0 mm, 10.0 mm to 30.0 mm and 3.33 to 10.00, respectively. The moisture content of the ingredient mix was varied from 15% to 25% and the temperature of the transition zone and die ...


Sorption Isotherm Characteristics Of Distillers Dried Grains With Solubles (Ddgs), Vykundeshwari Ganesan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater Jul 2006

Sorption Isotherm Characteristics Of Distillers Dried Grains With Solubles (Ddgs), Vykundeshwari Ganesan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater

Kurt A. Rosentrater

Distillers Dried Grains with Solubles (DDGS) is widely recognized as a highly nutritious animal feed ingredient. With the exponential growth of the fuel ethanol industry in the past several years, significant quantities of distillers grains are now being produced. To effectively utilize these feeds in the domestic market, however, these coproduct streams are increasingly being transported greater distances, and must be stored in various structures until final use. Unfortunately, DDGS flow is often problematic, as it frequently becomes restricted by caking and bridging during storage and transport. This issue may arise from a number of factors, including storage moisture, temperature ...


Effect Of Flow Agent Addition On The Physical Properties Of Ddg With Varying Moisture Content Soluble Percentages, Vykundeshwari Ganesan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater Jul 2006

Effect Of Flow Agent Addition On The Physical Properties Of Ddg With Varying Moisture Content Soluble Percentages, Vykundeshwari Ganesan, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater

Kurt A. Rosentrater

Distillers Dried Grains with Solubles (DDGS) is widely recognized as a highly nutritious animal feed ingredient. With the exponential growth of the fuel ethanol industry in the past several years, significant quantities of distillers' grains are now being produced. To effectively utilize these feeds in the domestic market, however, these coproduct streams are increasingly being transported greater distances, and must be stored in various structures until final use. Unfortunately, DDGS flow is often problematic, as it frequently becomes restricted by caking and bridging during storage and transport. This issue may arise from a number of factors, including storage moisture, temperature ...


Characteristics Of North American Meat & Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores Jul 2006

Characteristics Of North American Meat & Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores

Kurt A. Rosentrater

Unmarketable animal tissues are typically processed by rendering plants, which transform them into meat & bone meal (MBM) or similar products. MBM’s traditional use as animal feed has become increasingly threatened, but MBM has potential for non-feed applications. Development of new products and processes is hindered by lack of reliable data on many of MBM’s chemical and physical properties. MBM samples as well as data on raw material and process were collected from 19 rendering facilities in the United States and Canada. A large majority of the raw material was tissue from cattle, swine and poultry. All facilities surveyed practiced continuous dry rendering; 89% of the facilities use continuous cookers and 11% use falling film evaporators. MBM is high in protein (44.6-62.8%, mfb), but this protein is poorly soluble; at pH 7 solubility ranged from 2.20 to 7.22 %. Among all samples, the particles’ median geometric mean diameter was 387 µm, and the size distribution was broad. The median density of MBM particles was 1.41 (g/ml); median density of MBM in bulk ranged from 0.50 g/ml when loose-filled to 0.68 g ...


Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater Jul 2006

Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater

Kurt A. Rosentrater

The production of corn-based ethanol in the U.S. is dramatically increasing, and consequently so is the amount of coproduct materials generated from this processing sector. These streams are primarily utilized as livestock feed, which is a route that provides ethanol processors with a substantial revenue source and significantly increases the profitability of the production process. With the construction and operation of many new plants in recent years, these residuals do, however, have much potential for value-added processing and utilization in other sectors as well. Extensive research has been conducted into determining the nutritional properties of distillers dried grains with ...


Evaluating A Drainage Model Using Soil Hydraulic Parameters Derived By Various Methods, Zhiming Qi, Matthew J. Helmers, Ranvir Singh Jul 2006

Evaluating A Drainage Model Using Soil Hydraulic Parameters Derived By Various Methods, Zhiming Qi, Matthew J. Helmers, Ranvir Singh

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Soil hydraulic parameters are often indispensable input in hydrological modeling. The required input parameters can be obtained by measuring soil texture, bulk density, organic matter content, soil water retention and hydraulic conductivity. To minimize soil measurements, information is needed on how well hydrologic models perform with varying levels of soil hydraulic parameters. The objective of this study is to determine which level of soil information would be sufficient to use with DRAINMOD in predicting subsurface drainage volumes. Three groups of parameters were obtained by various methods: 1) determining the soil texture and bulk density (BD) data from the Soil Survey ...


Fusion Of Remotely Sensed Imagery And Minimal Ground Sampling For Soil Moisture Mapping, Amy L. Kaleita Jul 2006

Fusion Of Remotely Sensed Imagery And Minimal Ground Sampling For Soil Moisture Mapping, Amy L. Kaleita

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

A methodology for mapping surface soil moisture content across an agricultural field from optical remote sensing and limited ground sampling is developed. This study uses remotely sensed spectral measurements of soil reflectance in a single visible wavelength and historical measurements of volumetric soil moisture within the top 6 cm, in conjunction with a single ground measurement. Results indicate that combining reflectance and ground measurements can yield more detailed maps of soil moisture than ground measurement alone.