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Bioresource and Agricultural Engineering

2016

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Articles 1 - 30 of 216

Full-Text Articles in Life Sciences

Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid A. Suleiman, Chenxu Yu, Kurt A. Rosentrater Dec 2016

Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid A. Suleiman, Chenxu Yu, Kurt A. Rosentrater

Chenxu Yu

The worldwide decline and overexploitation of ocean fisheries stocks had provided incentive for rapid growth of aquaculture. The aquaculture industry has been recognized as the fastest-growing food production system globally, with a 10% increases in production per year, and is one of the most reliable and sustainable growth markets for manufactured feeds. Extrusion technology has been extensively used in the modern aquatic feed manufacturing, due to nutritional, physical properties improvements and cost effectiveness of feeds. Cost related to aquatic feed remains the biggest challenge, especially for small-scale producers. In this study a single screw extruders and three different scenarios (i ...


Successful Grant-Writing Strategies For Junior Scientists: An American Public University Perspective, Jacek A. Koziel Dec 2016

Successful Grant-Writing Strategies For Junior Scientists: An American Public University Perspective, Jacek A. Koziel

Agricultural and Biosystems Engineering Publications

The objective of this article was to summarize selected successful grant writing strategies from the perspective of an American public university faculty member. Early sections focused on describing the American public university system aspects that are the background to incentivizing and rewarding successful grant writing. The latter sections focused on examples of resources from the personal to the national level for grant wring. The article concluded with tips for successful grant-writing for junior scientists that are known to work regardless of a particular academic system. The author is a faculty member of one of the first public universities in U ...


Drainage Design For Improved Profits And Water Quality, Matthew J. Helmers, Greg Brenneman Dec 2016

Drainage Design For Improved Profits And Water Quality, Matthew J. Helmers, Greg Brenneman

Proceedings of the Integrated Crop Management Conference

Subsurface drainage systems are an important component of agricultural production systems in many areas of Iowa. However, these drainage systems have been shown to deliver nitrate-N to downstream waterbodies. So, while subsurface drainage is important for crop production we also need to consider the design of these systems to minimize nitrate-N loss. Use of drainage water management in the design and operation of subsurface drainage systems is one potential method to reduce nitrate-N loss.


Making Sure Planter Technology Accomplishes The Basics, H. Mark Hanna Dec 2016

Making Sure Planter Technology Accomplishes The Basics, H. Mark Hanna

Proceedings of the Integrated Crop Management Conference

Checking field conditions to make optimal planter adjustments such as the amount of down force on depth-gauge wheels is required for both automated and manual systems. Operator manuals include the importance of evaluating field conditions and setting adjustments accordingly for factors such as soil moisture, tillage, and texture.


Verifying Liquid Manure Hydraulic Distribution, Kapil Arora, Daniel Andersen Dec 2016

Verifying Liquid Manure Hydraulic Distribution, Kapil Arora, Daniel Andersen

Proceedings of the Integrated Crop Management Conference

Liquid manure application in Iowa typically takes place in fall after harvest in preparation for the following crop year. Manure is either transported and land applied with tank wagons and/or directly pumped and land applied using a dragline system. Application rate, gallons per acre, is typically controlled by flow control actuators operated by on-board rate controllers which co-process the drive speed, tool-bar width, and the flow meter reading with the operator input of application rate. This system ensures that the desired application rate is achieved for manure application. The manure is supplied to a distribution manifold after it passes ...


Extending Field Scale 4r Nutrient Management And Wetland Performance To Watershed Scale Outcomes, Matthew J. Helmers Dec 2016

Extending Field Scale 4r Nutrient Management And Wetland Performance To Watershed Scale Outcomes, Matthew J. Helmers

Proceedings of the Integrated Crop Management Conference

Much of the U.S. Corn Belt is characterized by relative flat, poorly-drained areas which with extensive subsurface drainage, have become some of the most valuable and productive agricultural land in the world. However, this is not without consequences. Nitrate-N loss from these systems is of particular concern due to its potential adverse impacts on both public health and ecosystem function. In addition to the potential local impacts on receiving waters in the Corn Belt, nitrogen loads from the region are suspected as a primary contributor to hypoxia in the Gulf of Mexico. Iowa has long been a leader in ...


Quality Issues In The 2016 Crop, Charles R. Hurburgh Dec 2016

Quality Issues In The 2016 Crop, Charles R. Hurburgh

Proceedings of the Integrated Crop Management Conference

The 2016 growing season was generally wet with two distinct temperature patterns; hot early during pollination and cooler later. Most of Iowa had 125% up to 200% of normal rainfall to Labor Day, and yet more after Labor Day. The outlook going forward into winter is continued above average temperature. These conditions produced high yield potential at the start of September, but deteriorating quality after Labor Day. Crop quality is normally established by conditions at the very end of the growing season. The massive rains in the Northern third of Iowa complicated the need to move quickly on deteriorating grain.


Is There Loss Of Corn Dry Matter In The Field After Maturity?, Charles Hurburgh, Philip Blake, Mark Licht, Mark Hanna Dec 2016

Is There Loss Of Corn Dry Matter In The Field After Maturity?, Charles Hurburgh, Philip Blake, Mark Licht, Mark Hanna

Proceedings of the Integrated Crop Management Conference

Mystery yield loss, phantom yield loss, and now invisible yield loss – all are terms used for the concept that dry matter (yield) is being lost in-field between maturity (at about 28% moisture) and harvest (approximately 15% moisture). Popular press articles continue to indicate up to 1% dry matter loss per 1% grain moisture decrease. If this amount of dry matter loss occurs it would be significant in marketing terms. Some believe that this loss is caused by seed respiration.


Spray Equipment Operation For Emerging Herbicide Technology, H. Mark Hanna Dec 2016

Spray Equipment Operation For Emerging Herbicide Technology, H. Mark Hanna

Proceedings of the Integrated Crop Management Conference

Weed resistance to herbicide is prompting applicators to consider using a broader spectrum of herbicides. Reassessing use of existing herbicides and shifting away from predominant use of a single herbicide such as glyphosate is a sort of “back-to-the-future” approach as long-time applicators and those involved with crop production reacquaint themselves with application requirements of other products. Opportunities for confusion exist as label requirements have changed for variations of once familiar products.


Daily Erosion Project: Daily Estimates Of Soil Erosion And Water Runoff, Richard Cruse, Brian Gelder, David James, Daryl Herzmann Dec 2016

Daily Erosion Project: Daily Estimates Of Soil Erosion And Water Runoff, Richard Cruse, Brian Gelder, David James, Daryl Herzmann

Proceedings of the Integrated Crop Management Conference

Soil erosion and water runoff drive water quality degradation and are liabilities to crop production, yet their magnitude is neither quantified nor inventoried for US agricultural areas. This project’s goals are to: (1) estimate soil erosion and surface runoff across the Upper Midwest as contributors to soil and water degradation and (2) inventory these quantities for the next several years.


Design And Plan Of A Modified Hydroponic Shipping Container For Research, John A. Houtman Dec 2016

Design And Plan Of A Modified Hydroponic Shipping Container For Research, John A. Houtman

Open Access Theses

As the world’s population continues to increase, food production will need to increase in order to meet the predicted rise in food demand. However, with increased pressure on cropland available from environmental effects and urbanization, new innovative methods of crop production need to be researched in order to increase agricultural production with limited land. This research focuses on the design of a single form of urban agriculture that is considered Zfarming and has the potential to produce quality urban agricultural produce through ground-based measures. This project produced detailed step-by-step analysis of the design process, develop variability within the modified ...


Sugarcane Bagasse Hydrolysis Enhancement Using Bsa, Antonio Carlos Freitas Dos Santos Dec 2016

Sugarcane Bagasse Hydrolysis Enhancement Using Bsa, Antonio Carlos Freitas Dos Santos

Open Access Theses

Lignocellulose is composed of polysaccharides linked to lignin and other aromatic compounds, making the sugars not readily available to fermentation. This entails that biomass must go through the unit operations of pretreatment and enzyme hydrolysis. Pretreatment opens the structure to allow the enzymes to act on and hydrolyze cellulose and hemicellulose to glucose and/or xylose which in turn are fermented to ethanol. Concomitantly, the enzymes interact with soluble phenols and insoluble solids derived from lignin that inhibit hydrolysis. This leads to high enzyme loadings and higher production costs. Soluble phenols can be eliminated through washing. Insoluble lignin, however, demands ...


Deployment And Evaluation Of An Active Rfid Tracking System For Precision Animal Management, Brian Barnes Dec 2016

Deployment And Evaluation Of An Active Rfid Tracking System For Precision Animal Management, Brian Barnes

Biological Systems Engineering--Dissertations, Theses, and Student Research

A better understanding of animal space utilization in current livestock facilities could lead to improved facility design and animal health. This study was conducted to determine whether an active RFID tag tracking system could accurately provide animal locomotion data on an individual animal basis. The system is composed of four sensors, located in the corners of a swine pen, and compact tags, which attach to the animals and transmit a signal. The sensors use the tag signals to determine 3-D positions in real-time. A data acquisition system was developed to capture raw data from the system software into a database ...


Methodologies For Probing The Metatranscriptome Of Grassland Soil, Aaron Garoutte, Erick Cardenas, James Tiedje, Adina Howe Dec 2016

Methodologies For Probing The Metatranscriptome Of Grassland Soil, Aaron Garoutte, Erick Cardenas, James Tiedje, Adina Howe

Agricultural and Biosystems Engineering Publications

Metatranscriptomics provides an opportunity to identify active microbes and expressed genes in complex soil communities in response to particular conditions. Currently, there are a limited number of soil metatranscriptome studies to provide guidance for using this approach in this challenging matrix. Hence, we evaluated the technical challenges of applying soil metatranscriptomics to a highly diverse, low activity natural system. We used a non-targeted rRNA removal approach, duplex nuclease specific (DSN) normalization, to generate a metatranscriptomic library from field collected soil supporting a perennial grass, Miscanthus x giganteus (a biofuel crop), and evaluated its ability to provide insight into its active ...


Characterization Of Ground Nozzles For Pesticide Applications, Ryan Henry Dec 2016

Characterization Of Ground Nozzles For Pesticide Applications, Ryan Henry

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Pesticide applications are a common component of crop production systems in the United States (US). For row crop systems (e.g. corn, soybean, or wheat), pesticides are applied by ground, aerial, or chemigation methods. The exact method of pesticide delivery is not universally regulated/ prescribed in the US, and the equipment and application technique are largely defined by the individual applicator. A wide variety of choices and decisions must be made by applicators to result in a successful pesticide application. Examples of these choices include proper active ingredient(s), carrier volume and equipment (e.g. nozzle type, spacing, and operating ...


Perspectives And Challenges Of On-Site Quantification Of Organic Pollutants In Soils Using Solid-Phase Microextraction, Bulat Kenessov, Jacek A. Koziel, Nadezhda V. Bakaikina, Dina Orazbayeva Dec 2016

Perspectives And Challenges Of On-Site Quantification Of Organic Pollutants In Soils Using Solid-Phase Microextraction, Bulat Kenessov, Jacek A. Koziel, Nadezhda V. Bakaikina, Dina Orazbayeva

Agricultural and Biosystems Engineering Publications

This study explores the current state-of-the-art progress toward on-site quantification of organic pollutants in soils with solid-phase microextraction (SPME). In spite of many available methods, only few publications report on-site analyses of soil samples by SPME. To date, the only application of SPME for the on-site quantification of organic pollutants in soil has been devoted to trichloroethylene. The problem of matrix effects limiting quantification by external standard calibration is discussed. Efficiencies of available approaches for decreasing and controlling matrix effects are evaluated and compared. SPME from a soil sample headspace with internal standard calibration was identified as one of the ...


Identification Of The Core Set Of Carbon-Associated Genes In A Bioenergy Grassland Soil, Adina Howe, Fan Yang, Ryan J. Williams, Folker Meyer, Kirsten S. Hofmockel Nov 2016

Identification Of The Core Set Of Carbon-Associated Genes In A Bioenergy Grassland Soil, Adina Howe, Fan Yang, Ryan J. Williams, Folker Meyer, Kirsten S. Hofmockel

Agricultural and Biosystems Engineering Publications

Despite the central role of soil microbial communities in global carbon (C) cycling, little is known about soil microbial community structure and even less about their metabolic pathways. Efforts to characterize soil communities often focus on identifying differences in gene content across environmental gradients, but an alternative question is what genes are similar in soils. These genes may indicate critical species or potential functions that are required in all soils. Here we identified the “core” set of C cycling sequences widely present in multiple soil metagenomes from a fertilized prairie (FP). Of 226,887 sequences associated with known enzymes involved ...


Incentive Systems In Organizations: The Scientific Perspective, Nir Keren, Matthew E. Harvey Nov 2016

Incentive Systems In Organizations: The Scientific Perspective, Nir Keren, Matthew E. Harvey

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Organizations use incentive systems to motivate employees to contribute toward organizational success. However, a lack of understanding of how incentives affect employee behaviors lead to implementation of incentive systems that gain undesired outcomes. The presentation will review the psychological and social factors of incentive systems and how to utilize this knowledge in order the structure effective incentive systems.


E. Coli Surface Properties Differ Between Stream Water And Sediment Environments, Xiao Liang, Chunyu Liao, Michael L. Thompson, Michelle L. Soupir, Laura R. Jarboe, Philip M. Dixon Nov 2016

E. Coli Surface Properties Differ Between Stream Water And Sediment Environments, Xiao Liang, Chunyu Liao, Michael L. Thompson, Michelle L. Soupir, Laura R. Jarboe, Philip M. Dixon

Agricultural and Biosystems Engineering Publications

The importance of E. coli as an indicator organism in fresh water has led to numerous studies focusing on cell properties and transport behavior. However, previous studies have been unable to assess if differences in E. coli cell surface properties and genomic variation are associated with different environmental habitats. In this study, we investigated the variation in characteristics of E. coli obtained from stream water and stream bottom sediments. Cell properties were measured for 77 genomically different E. coli strains (44 strains isolated from sediments and 33 strains isolated from water) under common stream conditions in the Upper Midwestern United ...


Designing For Food Security: Portability And The Expansion Of User Freedoms Through The Corepds In Chhattisgarh, India, Prashant Rajan, Shweta Chopra, A. K. Somasekhar, Chad M. Laux Oct 2016

Designing For Food Security: Portability And The Expansion Of User Freedoms Through The Corepds In Chhattisgarh, India, Prashant Rajan, Shweta Chopra, A. K. Somasekhar, Chad M. Laux

Shweta Chopra

Food insecurity is a complex global problem, with approximately one in eight humans struggling with insufficient ac-cess to adequate nutrition. India accounts for the largest share of the world’s food-insecure population despite more than four decades of subsidized food production, distribution, and consumption. We report on the public distribu-tion of food through the COREPDS (centralized online real-time public distribution system), an ICT intervention in the public distribution system of Chhattisgarh, India. COREPDS is a theoretically driven ICT intervention that empowers households in Chhattisgarh by offering them the freedom to choose when, where, and how they wish to exercise their ...


Lessons From The Far End: Caterpillar Frass-Induced Defenses In Maize, Rice, Cabbage, And Tomato, Swayamjit Ray, Saumik Basu, Loren J. Rivera-Vega, Flor E. Acevedo, Joe Louis, Gary W. Felton, Dawn S. Luthe Oct 2016

Lessons From The Far End: Caterpillar Frass-Induced Defenses In Maize, Rice, Cabbage, And Tomato, Swayamjit Ray, Saumik Basu, Loren J. Rivera-Vega, Flor E. Acevedo, Joe Louis, Gary W. Felton, Dawn S. Luthe

Faculty Publications: Department of Entomology

Plant defenses to insect herbivores have been studied in response to several insect behaviors on plants such as feeding, crawling, and oviposition. However, we have only scratched the surface about how insect feces induce plant defenses. In this study, we measured frass-induced plant defenses in maize, rice, cabbage, and tomato by chewing herbivores such as European corn borer (ECB), fall armyworm (FAW), cabbage looper (CL), and tomato fruit worm (TFW). We observed that caterpillar frass induced plant defenses are specific to each host-herbivore system, and they may induce herbivore or pathogen defense responses in the host plant depending on the ...


Designing For Food Security: Portability And The Expansion Of User Freedoms Through The Corepds In Chhattisgarh, India, Prashant Rajan, Shweta Chopra, A. K. Somasekhar, Chad M. Laux Oct 2016

Designing For Food Security: Portability And The Expansion Of User Freedoms Through The Corepds In Chhattisgarh, India, Prashant Rajan, Shweta Chopra, A. K. Somasekhar, Chad M. Laux

Agricultural and Biosystems Engineering Publications

Food insecurity is a complex global problem, with approximately one in eight humans struggling with insufficient ac-cess to adequate nutrition. India accounts for the largest share of the world’s food-insecure population despite more than four decades of subsidized food production, distribution, and consumption. We report on the public distribu-tion of food through the COREPDS (centralized online real-time public distribution system), an ICT intervention in the public distribution system of Chhattisgarh, India. COREPDS is a theoretically driven ICT intervention that empowers households in Chhattisgarh by offering them the freedom to choose when, where, and how they wish to exercise their ...


Periodic Physical Disturbance: An Alternative Method For Controlling Sitophilus Zeamais (Maize Weevil) Infestation, Rashid A. Suleiman, Kurt A. Rosentrater, Bernard Chove Sep 2016

Periodic Physical Disturbance: An Alternative Method For Controlling Sitophilus Zeamais (Maize Weevil) Infestation, Rashid A. Suleiman, Kurt A. Rosentrater, Bernard Chove

Agricultural and Biosystems Engineering Publications

Sitophilus zeamais Motschulsky is the most important insect pest of stored maize in tropical regions. The objective of this study was to determine the practicality of periodic physical disturbance on S. zeamaismortality and its adoption by smallholder farmers in developing countries. In this experiment, treatments and control were arranged in a randomized block design with three replications and three storage times in three regions of Tanzania. Region was used as the blocking variable. A total of 108 clean 20-L plastic containers were each loaded with 10 kg of fresh white dent corn and 0.50 kg of maize infested ...


Abe Fermentation From Low Cost Substrates, Kai Gao Sep 2016

Abe Fermentation From Low Cost Substrates, Kai Gao

Electronic Thesis and Dissertation Repository

The high cost of substrate and product inhibition in the fermentation broth remains two major problems associated with bio-butanol production. This thesis aims to solve these problems by examining abundant lignocellulosic biomass as potential feedstocks and exploring novel substrates such as carbohydrates derived from microalgae for ABE fermentation. The commonly observed toxic effect after pretreatment of lignocelluslosic biomass was removed by resin adsorption, where the resin could also serve as an in-situ butanol recvoery devices.

Corn cobs (an agricultural waste), switchgrass (an energy crop) and phragmites (an invasive plant in North America) were investigated as substrates for ABE fermentation by ...


Omnidirectional Thermal Anemometer For Low Airspeed And Multi-Point Measurement Applications, Yun Gao, Brett C. Ramirez, Steven J. Hoff Sep 2016

Omnidirectional Thermal Anemometer For Low Airspeed And Multi-Point Measurement Applications, Yun Gao, Brett C. Ramirez, Steven J. Hoff

Agricultural and Biosystems Engineering Publications

Current control strategies for livestock and poultry facilities need to improve their interpretation of the Thermal Environment (TE) that the animals are experiencing in order to provide an optimum TE that is uniformly distributed throughout the facility; hence, airspeed, a critical parameter influencing evaporative and convective heat exchange must be measured. An omnidirectional, constant temperature, Thermal Anemometer (TA) with ambient dry-bulb temperature (tdb) compensation was designed and developed for measuring airspeeds between 0 and 6.0 m s−1. An Arduino measured two analog voltages to determine the thermistor temperature and subsequently the power being dissipated from a near-spherical overheated ...


Seminar On Adjustment And Its Problems In Southern Iowa, Herbert B. Howell, Russell Swenson, Frank F. Riecken, Lloyd C. Dumenil, Harvey E. Thompson, Orvis P. Engelstad, Donald R. Kaldor, Raymond R. Beneke, Clifford M. Baumback, Clark C. Bloom, John F. Timmons, Clarence D. Edmond, Clarence E. Bundy, Ward W. Bauder, Gordon Ball, Charles Ballantyne, Mary Bodwell, Charles Greenlee, Frank W. Schaller, K. K. Barnes, W. D. Shrader, J. M. Scholl, Andrew L. Mccomb, Walter Woods, Ralph Durham, Earl O. Heady, Loren Ihnen, Charles L. Leven, Lee G. Burchinal, Carl C. Malone, Irene Beavers, Gordon Bivens, Joe M. Bohlen, Charles Donhowe, Eber Eldridge, Emmit Haynes, Arnold Paulsen, Dwayne Rohweder, Joseph A. Stritzel, E. R. Duncan, Wallace Ogg, Louise Rosenfeld, John T. Pesek Jr., Margaret Liston, Virgil L. Hurlburt, Garold Parks, Geoffrey Shepherd, Alvin C. Egbert, Ray E. Wakeley, Francis Carlin, Francis A. Kutish, Verner H. Nielsen, Irwin Oest, J. T. Scott, Morton Smutz, Glenn Holmes, I. W. Arthur, Herbert C. Cook, Donald Boles, Ross Talbot, William Murray, Leon Charity, Howard Johnson, Richard Phillips Aug 2016

Seminar On Adjustment And Its Problems In Southern Iowa, Herbert B. Howell, Russell Swenson, Frank F. Riecken, Lloyd C. Dumenil, Harvey E. Thompson, Orvis P. Engelstad, Donald R. Kaldor, Raymond R. Beneke, Clifford M. Baumback, Clark C. Bloom, John F. Timmons, Clarence D. Edmond, Clarence E. Bundy, Ward W. Bauder, Gordon Ball, Charles Ballantyne, Mary Bodwell, Charles Greenlee, Frank W. Schaller, K. K. Barnes, W. D. Shrader, J. M. Scholl, Andrew L. Mccomb, Walter Woods, Ralph Durham, Earl O. Heady, Loren Ihnen, Charles L. Leven, Lee G. Burchinal, Carl C. Malone, Irene Beavers, Gordon Bivens, Joe M. Bohlen, Charles Donhowe, Eber Eldridge, Emmit Haynes, Arnold Paulsen, Dwayne Rohweder, Joseph A. Stritzel, E. R. Duncan, Wallace Ogg, Louise Rosenfeld, John T. Pesek Jr., Margaret Liston, Virgil L. Hurlburt, Garold Parks, Geoffrey Shepherd, Alvin C. Egbert, Ray E. Wakeley, Francis Carlin, Francis A. Kutish, Verner H. Nielsen, Irwin Oest, J. T. Scott, Morton Smutz, Glenn Holmes, I. W. Arthur, Herbert C. Cook, Donald Boles, Ross Talbot, William Murray, Leon Charity, Howard Johnson, Richard Phillips

Edmond W. H. Lee

This publication includes seminar papers presented and discussed by staff members of Iowa State University during the winter quarter of 1959. The seminar was sponsored by the Center for Agricultural and Economic Adjustment and met for two hours per week over a period of nearly three months. The seminar was organized to include a group of about 70 members designated by the committee listed below. The formal seminar group discus sed each paper after its presentation. The papers were revised in line with these discussions by the seminar group and recommendations by the seminar committee.


Increasing Maize Tolerance To Drought And Flood With Seed Coating Treatments, Jacob E. Bennett, Achint Sanghi, R. P. Kingsly Ambrose Aug 2016

Increasing Maize Tolerance To Drought And Flood With Seed Coating Treatments, Jacob E. Bennett, Achint Sanghi, R. P. Kingsly Ambrose

The Summer Undergraduate Research Fellowship (SURF) Symposium

The lack of irrigation in regions prone to drought, and flooding due to high rainfall or lack of drainage affects seed viability and the subsequent germination and crop establishment. Seed treatment in the form of coatings shows promise as an effective method to preserve the viability of corn (Zea mays) seeds in drought and flood conditions. Chemical formulations may help improve the seed corn vigor under these stressed conditions. This study examined the efficacy of β-aminobutyric acid [BABA] and N-isopropylacrylamide [NIPA] in inducing drought resistance, as well as the ability of lanolin and linseed oil to provide flood tolerance for ...


Mapping And Analyzing Energy Use And Efficiency In A Modified Hydroponic Shipping Container, Rachel E. Sparks Aug 2016

Mapping And Analyzing Energy Use And Efficiency In A Modified Hydroponic Shipping Container, Rachel E. Sparks

Open Access Theses

In urban centers today, vertical farming is becoming a popular alternative to conventional agriculture in an effort to increase local food production and improve urban food security by growing crops using hydroponic methods in controlled environment spaces. More specifically, one vertical method involves growing crops inside refurbished shipping containers, or a “farm-in-a-box” concept, which offers a flexible, mobile, and scalable means of year-round food production in a variety of climates. Despite benefits of producing food locally, some of the concerns associated with these vertical farming systems include high energy consumption from climate control and electric lighting systems as well as ...


Influence Of Application Technology On Foliar Fungicide Efficacy On Cercospora Sojina Infected Soybean, Shawn Alan Butler Aug 2016

Influence Of Application Technology On Foliar Fungicide Efficacy On Cercospora Sojina Infected Soybean, Shawn Alan Butler

Masters Theses

Due to the constant concern with off-target contamination and application technology requirements associated with future herbicide-tolerant crops, the use of drift-reduction nozzle technology (DRT) may increase. The primary objective of this research was to evaluate the effects of coarse droplets generated by drift-reduction nozzles on foliar fungicide efficacy and residual in soybean infected by frogeye leaf spot caused by Cercospora sojina. No differences in disease control, soybean yield, spray retention, and residual when applying Quadris Top SB, a premix of azoxystrobin and difenoconazole, using nozzles that produce either a medium or ultra coarse droplet spectrum were determined.

Due to the ...


Use Of Recycled Containers For Hermetic Maize Storage In East Africa, A. Yakubu, L. A. Wilson, C. J. Bern, T. J. Brumm Aug 2016

Use Of Recycled Containers For Hermetic Maize Storage In East Africa, A. Yakubu, L. A. Wilson, C. J. Bern, T. J. Brumm

Agricultural and Biosystems Engineering Publications

Affordable, pesticide-free, and reliable maize storage containers for seed and food purposes are not available in many subsistence farming cultures. As a result, subsistence farmers lose their crop to pests and are forced to dispose of their maize for a low price right after harvest thus, robbing them of profit and food for the rest of the year. The objective of this research was to develop information to enable utilization of recycled sanitary hermetic maize storage containers. Use of these containers will allow farmers to preserve their maize for as long as they wish, using locally available resources. A market ...