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Articles 1 - 21 of 21
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Risk Return Of Farmer-Elevator Contracts For Soybeans And Corn In Arkansas, Marei Undine Houpert
Risk Return Of Farmer-Elevator Contracts For Soybeans And Corn In Arkansas, Marei Undine Houpert
Graduate Theses and Dissertations
In Arkansas the contribution of Agriculture to the states GDP is comparatively high. To help farmer's return risk the grain industry developed several marketing tools to support farmers. Literature in this research field finds different results for different locations, commodities, marketing tools and marketing years. As Agriculture in Arkansas is important for its economy this study focuses on soybeans and corn produced in the fertile north-eastern area of Arkansas that uses Memphis Tennessee as a spot market palace. The examined marketing tools are pre-harvest futures hedges and forward contracts as well as post-harvest storage strategies and minimum price contracts. All …
Arkansas Corn And Grain Sorghum Performance Tests 2013, R. D. Bond, D. G. Dombel, J. A. Still, R. M. Pryor
Arkansas Corn And Grain Sorghum Performance Tests 2013, R. D. Bond, D. G. Dombel, J. A. Still, R. M. Pryor
Arkansas Agricultural Experiment Station Research Series
Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture. The tests provide information to companies marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.
Effects Of Deterioration Parameters On Storage Of Maize: A Review, Rashid A. Suleiman
Effects Of Deterioration Parameters On Storage Of Maize: A Review, Rashid A. Suleiman
RASHID A SULEIMAN
Maize (Zea mays L), commonly known as corn in the United States, is the third most important cereal grain worldwide, after wheat and rice. It is a basic staple grain for large groups of people in Africa, Latin America, and Asia. In tropical countries, a large proportion of the maize is harvested and stored under humid and warm climatic conditions, which subsequently results in rapid deterioration of the grains, mainly because of growth of molds and pests. This study reviewed the main factors that lead to deterioration of maize in tropical countries and suggests ways of preventing the identified causes. …
Implications Of Volunteer Corn And Cross-Pollination Of Bt And Non-Bt Corn On Corn Earworm (Lepidoptera: Noctuidae) Bt Resistance Management, Arun Babu
Theses and Dissertations
Transgenic corn hybrids expressing Bt toxins are widely deployed to control pests such as Helicoverpa zea (Boddie). However, Bt resistance can reduce the efficacy of Bt corn hybrids. Volunteer corn expressing Bt toxins may impact Bt resistance management of pests. Surveys in Mississippi revealed the occurrence of fall season volunteer corn in high densities. Helicoverpa zea larvae were found feeding during both vegetative and reproductive stages. However, Bt parentage and low to moderate water and nitrogen stresses did not significantly influence H. zea larval growth and development on Bt positive volunteer plants. Additionally, pollen mediated Bt gene flow to non-Bt …
Effects Of A Corn Root Defense Substance On Western Corn Rootworm Diabrotica Virgifera Virgifera Leconte Larvae, Zixiao Zhao
Effects Of A Corn Root Defense Substance On Western Corn Rootworm Diabrotica Virgifera Virgifera Leconte Larvae, Zixiao Zhao
Department of Entomology: Dissertations, Theses, and Student Research
The objectives of this research were to evaluate the effects of hydroxamic acids, a group of corn root defense substances on western corn rootworm (Diabrotica virgifera virgifera LeConte) larvae and identify putative molecular mechanisms for hydroxamic acid detoxification. Corn line 428G carries a homozygous mutant bx1 gene, which makes it unable to synthesis hydroxamic acids. In contrast, H88 is the wild type parental line of 428G and is able to synthesize hydroxamic acids. Larvae were fed on 428G and H88 roots for 7 days for comparison. No significant difference was observed in growth, development, or survival rate. A RNA-Sequencing …
Field Evaluation Of Arbuscular Mycorrhizal Fungal Colonization In Bacillus Thuringiensis Toxin-Expressing (Bt) And Non-Bt Maize, Tanya E. Cheeke, Mitchell B. Cruzan, Todd N. Rosenstiel
Field Evaluation Of Arbuscular Mycorrhizal Fungal Colonization In Bacillus Thuringiensis Toxin-Expressing (Bt) And Non-Bt Maize, Tanya E. Cheeke, Mitchell B. Cruzan, Todd N. Rosenstiel
Biology Faculty Publications and Presentations
The cultivation of genetically engineered Bacillus thuringiensis toxin-expressing (Bt) maize continues to increase worldwide, yet the effects of Bt crops on arbuscular mycorrhizal fungi (AMF) in soil are poorly understood. In this field experiment, we investigated the impact of seven different genotypes of Bt maize and five corresponding non-Bt parental cultivars on AMF and evaluated plant growth responses at three different physiological time points. Plants were harvested 60 days (active growth), 90 days (tasseling and starting to produce ears), and 130 days (maturity) after sowing, and data on plant growth responses and percent AMF colonization of roots at each harvest …
Fiber Separation From Milled Corn And Sorghum Using The Elusieve Processfor Value Addition To Feed And Biofuel Production, Tejas S. Pandya
Fiber Separation From Milled Corn And Sorghum Using The Elusieve Processfor Value Addition To Feed And Biofuel Production, Tejas S. Pandya
Theses and Dissertations
Corn is widely used as animal feed as well as for fuel ethanol production. Fiber present in corn is not digested well by non-ruminants such as chicken and swine. Also, this fiber does not participate in conversion of starch to ethanol. Fiber separation from corn flour using the Elusieve process, a combination of sieving and air classification, would result in high starch animal feed and increase ethanol productivity. The objective of the first part of this dissertation was to understand the effect of retention screen size in the hammer mill on fiber separation from corn flour using the Elusieve process. …
Characterization Of Resistance To The Cry1f Toxin From Bacillus Thuringiensis In Resistant Fall Armyworm, Spodoptera Frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) From Puerto Rico, Ana Maria Velez
Department of Entomology: Dissertations, Theses, and Student Research
Transgenic corn expressing Cry1F protein from Bacillus thuringiensis Berliner has been registered for Spodoptera frugiperda control since 2003. Unexpected damage to Cry1F corn was reported in 2006 in Puerto Rico and Cry1F resistance in S. frugiperda was documented. The inheritance of Cry1F resistance was characterized in a S. frugiperda resistant strain from Puerto Rico which displayed >387-fold resistance to Cry1F. Concentration-response bioassays of reciprocal crosses of resistant and susceptible parental populations indicated that resistance is recessive and autosomal. Bioassays of the backcross of the F1 generation crossed with the resistant parental strain suggest that a single locus is responsible …
Microwave Drying Kinetics And Quality Characteristics Of Corn, Songul Gursoy, Ruplal Choudhary, Dennis G. Watson
Microwave Drying Kinetics And Quality Characteristics Of Corn, Songul Gursoy, Ruplal Choudhary, Dennis G. Watson
Articles
In recent years, microwave (MW) drying has gained popularity as an alternative drying method for a wide variety of food and agricultural products because of increasing concerns over product quality and production costs. However, the determination of drying kinetics that accurately describes microwave drying characteristics is crucial for the optimization of operating parameters, performance improvement of the drying system and product quality. The objective of this study was to investigate the drying kinetics and the quality characteristics of corn kernels, especially the effects of different initial moisture contents (18.3%, 26.3%, 34.3% and 42.3% db), MW power levels (70, 175 and …
Sp618 Corn And Wheat Silage Tests In Tennessee 2012, Fred L. Allen, Richard D. Johnson
Sp618 Corn And Wheat Silage Tests In Tennessee 2012, Fred L. Allen, Richard D. Johnson
Field & Commercial Crops
No abstract provided.
Evaluation Of Modifications To The Neutral-Detergent-Fiber Analysis Procedure For Corn And Distillers Grains Plus Solubles, C. D. Buckner, T. J. Klopfenstein, G. E. Erickson
Evaluation Of Modifications To The Neutral-Detergent-Fiber Analysis Procedure For Corn And Distillers Grains Plus Solubles, C. D. Buckner, T. J. Klopfenstein, G. E. Erickson
Department of Animal Science: Faculty Publications
Six experiments were conducted to evaluate methods for measuring NDF in corn and distillers grains plus solubles. Methods included using sodium sulfite, α-amylase (AMY), amyloglucosidase, heat and steam with an autoclave, grinding methods, and a pre–fat extraction to decrease factors that interfere with measuring NDF accurately. Using sodium sulfite and AMY resulted in decreased (P < 0.01) corn NDF values, but these decreases were different dependent on dry-rolled corn or high-moisture corn (interaction P < 0.01). Two doses of AMY (0.5 mL each) was optimum at decreasing dry-rolled corn, high-moisture corn, and steam-flaked corn NDF, but using amyloglucosidase, heat and steam with an autoclave, or both did not aid in decreasing corn NDF. Grinding corns through a 1-mm Tecator Cyclomill, compared with a Wiley mill, resulted in decreased corn NDF (P < 0.01). Using a pre–fat extraction method before the traditional NDF method resulted in decreased NDF values for distillers grains plus solubles (P < 0.01) compared with using 100 or 200 mL of NDF solution. The recommended methods for obtaining accurate NDF concentrations include using cyclo grinding and adding two 0.5 mL of AMY doses and 0.5 g of sodium sulfite for corn and pre–fat extraction for distillers grains plus solubles.
Up To Our Ears: Corn Overproduction, Its Environmental Toll, And Using The 2012 U.S. Farm Bill To Limit Corn Subsidies, Increase Environmental Protection Incentives, And Place Accountability On Crop Operations, Christopher Frump
Florida A & M University Law Review
No abstract provided.
Proso Millet (Panicum Miliaceum L.) Fermentation For Fuel Ethanol Production, Devin J. Rose, Dipak Santra
Proso Millet (Panicum Miliaceum L.) Fermentation For Fuel Ethanol Production, Devin J. Rose, Dipak Santra
Panhandle Research and Extension Center
The objective of this research was to determine the conversion efficiency of proso millet to ethanol compared to corn in a bench-scale dry-grind procedure. Seven proso millet cultivars and six advanced breeding lines containing waxy starch were fermented with Saccharomyces cerevisiae and ethanol production was compared with normal corn and “highly fermentable” corn. The highly fermentable corn exhibited the highest fermentation efficiency (97.0 ± 1.4%). Among proso millet lines, those with the highest fermentation efficiencies were: Huntsman (85.9 ± 0.6%), 172-2-9 (90.8 ± 0.2%), 172-2-13 (85.1 ± 2.5%), and 182-4-24 (84.7 ± 2.1). Waxy proso millet lines resulted in higher …
The Influence Of Plants On Atmospheric Methane In An Agriculture-Dominated Landscape, Xin Zhang, Xuhui Lee, Timothy J. Griffis, John M. Baker, Matt D. Erickson, Ning Hu, Wei Xiao
The Influence Of Plants On Atmospheric Methane In An Agriculture-Dominated Landscape, Xin Zhang, Xuhui Lee, Timothy J. Griffis, John M. Baker, Matt D. Erickson, Ning Hu, Wei Xiao
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The primary objective of this study was to clarify the influence of crop plants on atmospheric methane (CH4) in an agriculture-dominated landscape in the Upper Midwest of the United States. Measurements were carried out at two contrasting scales. At the plant scale, CH4 fluxes from soybean and corn plants were measured with a laser-based plant chamber system. At the landscape scale, the land surface flux was estimated with a modified Bowen ratio technique using measurements made on a tall tower. The chamber data revealed a diurnal pattern for the plant CH4 flux: it was positive (an …
Ec13-872 Nebraska 2013 Crop Budgets, Robert N. Klein, Roger K. Wilson
Ec13-872 Nebraska 2013 Crop Budgets, Robert N. Klein, Roger K. Wilson
University of Nebraska-Lincoln Extension: Historical Materials
This publication contains crop production budgets for 13 crops and 51 cropping systems, as well as tables of power, machinery, labor, and input costs used to develop these budgets. Each budget consists of five sections:
- Heading
- List of representative field operations
- List of materials and services used
- Operations and interest tabulations
- Overhead costs including real estate taxes and opportunity charges
The budgets are presented in a worksheet format with a “Your Estimate’’ column for recording cost modifications.
Spillover Benefits Of Wildlife Management To Support Pheasant Populations, Aaron M. Anderson, Karen Gerhardt, Wylie T. Cross, Stephanie A. Shwiff
Spillover Benefits Of Wildlife Management To Support Pheasant Populations, Aaron M. Anderson, Karen Gerhardt, Wylie T. Cross, Stephanie A. Shwiff
USDA Wildlife Services: Staff Publications
Ring-necked pheasant (Phasianus colchicus) and other upland game populations in Wyoming, USA, have been declining due to changes in agricultural practices, urban development, and predation. Raccoons (Procyon lotor) have been implicated as one of the main predators of pheasant nests. Management of raccoons to support pheasant populations has the direct benefit of increasing pheasant populations and additional spillover benefits to corn producers in the region may occur. We conducted a field study in southeastern Wyoming from July to October 2009 to estimate the increase in corn yield associated with raccoon trapping. Although the primary purpose of the raccoon trapping was …
Simulated Yield And Profitability Of Five Potential Crops For Intensifying The Dryland Wheat-Fallow Production System, S. A. Saseendran, David C. Nielsen, L.R. Ahuja, L. Ma, Drew J. Lyon
Simulated Yield And Profitability Of Five Potential Crops For Intensifying The Dryland Wheat-Fallow Production System, S. A. Saseendran, David C. Nielsen, L.R. Ahuja, L. Ma, Drew J. Lyon
Panhandle Research and Extension Center
Greater precipitation use efficiency (PUE) and economic returns by increasing cropping frequency through the addition of summer crops to the dryland winter wheat-fallow (WF) cropping system have been reported in the semiarid Central Great Plains of USA. However, due to the highly variable nature of precipitation and uncertain water availability, selection of a crop with assured positive net returns to add to the system to increase cropping frequency is a challenge in the absence of reliable seasonal precipitation forecasts. The objective of this study was to evaluate long-term yields and net returns of several potential summer crops at various soil …
Comparisons Between Blackbird Damage To Corn And Sunflower In North Dakota, Megan E. Klosterman, George M. Linz, Anthony Slowik, H. Jeffrey Homan
Comparisons Between Blackbird Damage To Corn And Sunflower In North Dakota, Megan E. Klosterman, George M. Linz, Anthony Slowik, H. Jeffrey Homan
USDA Wildlife Services: Staff Publications
For sunflower producers in North Dakota, blackbird (Icterinae) damage is a chronic problem costing millions of dollars annually. Sunflower damage surveys were last completed in the state in 1979-1980. Since the last surveys, corn plantings have increased 6-fold to 1500 X 103 ha, whereas sunflower hectarage has declined by >75% to 310 × 103 ha. Blackbirds forage on both crops, and this rapid change in North Dakota’s agricultural landscape was a sound inducement for reassessing crop damage. Field surveys are an important step in damage methods development because they are used for measuring efficacy, as well as assessing …
The Sky Is Falling: Chemical Characterization And Corrosion Evaluation Of Deposition Produced During The Static Testing Of Solid Rocket Motors, William J. Doucette, La S. Mcneill, Scout Mendenhall, Paul V. Hancock, Jason E. Wells, Kevin J. Thackeray, David P. Gosen
The Sky Is Falling: Chemical Characterization And Corrosion Evaluation Of Deposition Produced During The Static Testing Of Solid Rocket Motors, William J. Doucette, La S. Mcneill, Scout Mendenhall, Paul V. Hancock, Jason E. Wells, Kevin J. Thackeray, David P. Gosen
Reports
Static tests of horizontally restrained rocket motors at the ATK facility in Promontory UT, USA result in the deposition of entrained soil and fuel combustion products, referred to as Test Fire Soil (TFS), over areas as large as 30–50 mile2 (80–130 km2) and at distances up to 10–12 miles (16–20 km) from the test site. Chloride is the main combustion product generated from the ammonium perchlorate–aluminum based composite propellant. Deposition sampling/characterization and a 6-month field corrosivity study using mild steel coupons were conducted in conjunction with the February 25th 2010 FSM-17 static test. The TFS deposition rates at the three …
Water Productivity Of Corn And Dry Bean Rotation On Very Fine Sandy Loam Soil In Western Nebraska, William E. Spurgeon, C. Dean Yonts
Water Productivity Of Corn And Dry Bean Rotation On Very Fine Sandy Loam Soil In Western Nebraska, William E. Spurgeon, C. Dean Yonts
Department of Biological Systems Engineering: Papers and Publications
Subsurface drip irrigation (SDI) was used to irrigate corn and dry beans in a crop rotation study for four years from 2005 to 2008 to evaluate the accumulative effect of irrigation amount on yield and irrigation water use efficiency (IWUE). This study was conducted on a very fine sandy loam soil using a short season corn hybrid typical for the area. Four irrigation treatments based on providing a fraction of the estimated crop evapotranspiration (ETc) were evaluated. The treatments were designed to replace a certain percentage of ETc and were denoted as I125, …
Drought And Corn In Kentucky, Rezaul Mahmood
Drought And Corn In Kentucky, Rezaul Mahmood
School of Natural Resources: Faculty Publications
No abstract provided.