Digital Commons Network^™

Management Practices For Corn Producers Implementing Early Planting As A Production Strategy, Matthew W. Hock

Theses and Dissertations

Producers choosing to implement an early corn planting management strategy often experience several yield limiting biotic and abiotic factors. Field variability, flooding, sub-optimal soil temperatures which leads to poor nutrient uptake, delayed emergence and reduced root growth can limit grain production. Three separate experiments were conducted to address some of the negative effects associated with early corn planting. Experiment 1 evaluated flooding effects on several morpho-physiological traits including root system architecture during early crop development. Hybrids (DKC 6208, Pioneer 1197) were flooded at planting (V0) and growth stages V1, V2, V3 for 0, 6, 12, 24, 48, 96 hours. Plants …

Nitrogen Availability And Use Efficiency In Corn Treated With Contrasting Nitrogen Sources, Avneet Kakkar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The plant-soil nitrogen cycle plays a significant role in allocation of available N to plants, and improved understanding of N cycling helps sustainably increase fertilizer use efficiency. There are various processes (nitrogen mineralization and nitrification) involved in the availability and mobility of nitrogen in the soil. The primary objective of this study was to determine the NUE under contrasting nitrogen treatments over a period of five years. Additionally, we examined the effect of different N treatments on N mineralization and nitrification in conventional and organic farming systems.

This project was funded by Agriculture and Food Research Initiative Competitive Grants Program …

Winter Cover Crops, Fall Applied Poultry Litter, And N Fertilization Effects On Soil Quality And Health Indicators, Apisit Boupai

Theses and Dissertations

Soil quality and health indicators are necessary to monitor and improve the agricultural sustainability. This experiment was conducted at Mississippi State, MS between 2015 and 2016. Soil samples were taken to determine bulk density, enzymatic activity, and total C and N. Results indicated greater bulk density, total C and N, and enzymatic activity for inter-row position than for within the corn row which was disturbed by strip-tillage. Soil bulk density tended to increase with soil depth; however, total C and N and total microbial activity decreased with depth both years. Total soil C and N increased from 2015 to 2016. …

Nafta And Its Effect On Corn, Migration And Human Rights In Mexico, Thomas Nisivaco

College of Liberal Arts & Social Sciences Theses and Dissertations

This paper will attempt to show that U.S. corn subsidies that has led to the flooding of Mexican markets with corn, is the primary factor responsible for the internal displacement of rural farmers in Mexico. The NAFTA trade agreement has eliminated trade barriers and placed Mexico’s domestically produced corn in direct competition with U.S. highly subsidized corn that has led to Mexican corn farmers, who comprise the majority of the country’s agricultural sector, to experience a drastic decline in the price of their product causing them to have difficulties in sustaining a living in this market. Therefore, we can see …

Bioethanol Production Using Saccharomyces Cerevisae Cultivated In Sugarcorn Juice, Thirumalai Nambi Thiruvengadathan

Electronic Thesis and Dissertation Repository

For the first time, juice extracted from sugarcorn, a new Canadian energy crop, was used for bioethanol production. Physical and chemical characteristics of sugarcorn juice (SCJ) were determined. SCJ contained a maximum of 145 g/L of carbohydrates, with sucrose, glucose and fructose together contributing 80%. Effect of autoclaving and carbon filtration on juice sugars were investigated.

Shake flask fermentations using Saccharomyces cerevisiae grown in yeast extract supplemented SCJ produced a maximum of 45.6 g/L ethanol in 72 h. Bioreactor studies using un-supplemented SCJ achieved 40 g/L ethanol in 26 h, yielding a maximum of 0.46 g ethanol/g fermentable sugars, representing …

Pedal-Powered Drivetrain System, Geremy J. Patterson, Callaghan Fenerty, Bradley Welch

Mechanical Engineering

No abstract provided.

Maize Mill Senior Project, Jose Ignacio Delgado, Wesley C. Curtis, Charles Steese

Mechanical Engineering

Engineers Without Borders (EWB) has worked on several projects to help developing communities around the world build the infrastructure necessary for modern life. One of their projects is the creation of an inexpensive and easily manufactured maize mill that communities in Africa (mainly Malawi) can use to grind corn and make their main food source, Nsima. Geoffery Wheeler, an accomplished engineer and former mentor to EWB’s Malawi team, wants an inexpensive, easily manufacturable and effective maize mill that can be fabricated and sustained in Africa.

This report describes the process in which the Maize Mill Senior Project team created the …

Measuring The Adaptive Response To Drought, Kyle Eagar

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Scientific evidence suggests that future climate change has the potential to bring about an increase in both the frequency and duration of drought in some regions of the world (United Nations, 2012). Economists have theorized that at least some of the adverse effects of these droughts will be mitigated through various adaptive responses by agricultural producers. The effectiveness of any adaptive response to climate change will depend on how quickly producers can recognize a change in climatic patterns and respond accordingly. The following paper investigates the relationship between a specific climate signal (prolonged drought) and the land use decision of …

Interactions Between Plant Water-Stress And Neonicotinoid Insecticides On Spider Mite Infestations In Corn, Alice Ruckert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Spider mites (Acari: Tetranychidae) are an important agricultural pest of many crops and landscape plants. They can reproduce rapidly and quickly develop resistance to many pesticides, making them difficult to manage. Plant water-stress and high temperatures promote spider mite infestations, while spider mite outbreaks can also result from neonicotinoid insecticide applications. Drought is predicted to increase in the Intermountain West due to increases in temperature and reduced frequency of precipitation events in the region, and neonicotinoids are currently one of the most widely used classes of insecticides in field crops. I studied the interactive effect of these two simultaneously occurring …

Temporal Evaluation Of Corn Respiration Rates Using Pressure Sensors, Gagandeep Singh Ubhi

Graduate Theses and Dissertations

High respiration rate of a grain indicates faster degradation of its dry matter. Proper grain management requires chronological and precise measurements of carbon dioxide evolved from grain respiration during the postharvest storage duration. Therefore the main goal of this research was to develop a new technique that evaluates temporal corn respiration rate using pressure sensors. It was based on measuring pressure drop associated with the grain respiration in a closed container and using it to calculate the grain respiration rates.

Dry corn (Zea Mays L.) was procured from a local farmer and stored at 4ºC. Corn rewetting technique was applied …

Incentive Payments For Planting Upland Bird Habitat Field Borders In Tennessee, Nathaniel Scott Bruce

Masters Theses

Crop yields along field perimeters that are adjacent to trees and other tall-herbaceous are known to have the lowest yields in a field. An alternative use of these areas that might be more profitable and sustainable is to remove the land from crop production and enroll these areas into the upland bird habitat (UBH) buffer program. However, the adoption of UBH buffers have been limited by producers, despite being eligible for receiving an incentive payment for adopting UBH buffers. Therefore, the objective of this thesis was to determine the breakeven incentive payment for corn [Zea mays L.] and soybean …

Optimizing Soybean (Glycine Max L.) Yield With Nitrogen And Sulfur Applications, Kacey A. Cannon

Masters Theses

Although soybean (Glycine max L.) yields have increased over the past decade, even greater improvement is in demand. Nontraditional practices such as applying nitrogen (N) to soybean for yield optimization, might be one way to meet this demand. Also, sulfur (S) is becoming a more important limiting nutrient in production due to higher yielding crops, lower S containing production inputs, and reduced supply from the environment. The N study involved two environments, irrigated and dryland, in Milan (35.9198° N, 88.7589° W) and Jackson (35.6145° N, 88.8139° W), TN in 2015 and 2016. Urea fertilizer treatments were 34, 67, and …

Establecimiento De 5.000 M2 De Maíz (Zea Mays) Hibrido Atl 200 Para Elaboración De Ensilaje En La Vereda La Chucua Municipio De Saravena - Arauca Como Suplemento De La Alimentación Ganadera, Kelly Yulieth Barón González

Ingeniería Agronómica

No abstract provided.

Establecimiento De Una Hectárea De Maíz (Zea Mays L.), Como Modelo De Aprendizaje Para Los Agricultores De La Vereda Filipinas Del Municipio De Tame Arauca, Claudia Milena Urrego Tuberquia

Ingeniería Agronómica

No abstract provided.

Evaluating The Long Term Effects Of Continuous Broiler Litter Applications On Residual Soil Fertility And Yields Of Corn And Soybean Crops, And A Side Experiment Studying The Residual Copper Fertilization Effects On These Crops, Jesse Lee Gray Mr.

Murray State Theses and Dissertations

Abstract

The increasing cost of commercial fertilizers and the availability of animal waste that has high nutrient content have led to producers utilizing animal waste such as poultry litter in their fertility programs. This increased use has raised concerns as to what are the optimum rates to apply to meet crop needs and how will long term use at high rates of litter effect soil test levels of nutrients such as phosphorus and potassium. The objective of this study was to address these concerns. This study has been ongoing since 1997 with treatments of zero to seven tons of litter …

Field To Feedlot: How Us Policy Promoted Cattle Concentration, Hannah Siegel Conley

Senior Projects Spring 2017

Senior Project submitted to The Division of Social Studies of Bard College.

Performance Of The Producer Accumulator In Corn And Soybean Commodity Markets, Chad Te Slaa

Electronic Theses and Dissertations

This research quantifies risk reduction and performance of the producer accumulator contract in corn and soybean markets. To quantify performance, we use three alternative theoretical pricing models to estimate historical producer accumulator contract specifications in corn and soybean markets. We then compare the performance of the producer accumulator to eight alternative agricultural marketing strategy portfolios that are also used in new generation grain contracts. The performance measures we compare are: average bushel price that would be received by the producer, daily portfolio risk, and the Sharpe ratio. The period we examine performance was between 2008 and 2017. We investigate performance …

Tecnología Aplicada En El Agro Colombiano: Asimetrías Evidenciadas En La Competitividad Entre Los Subsectores Café Y Maíz Durante El Periodo 2005 – 2015, Jaider Montalvo Serrato, Óscar Arturo Barriga Ospina, Susan Camila Rojas Miranda

Negocios y Relaciones Internacionales

La historia colombiana ha mostrado que el agro es uno de los sectores más importantes en la estructura económica del país, debido a sus aportes en términos del Producto Interno Bruto (PIB) y empleo. Sin embargo, el sector agrícola, es escasamente aprovechado y se relega a situaciones de precariedad industrial, y atraso técnico y tecnológico que no permiten la plena explotación productiva de este. Productos con alta intensidad exportadora como el café, ven en sus métodos productivos un alto índice tecnológico, mientras que productos con bajo nivel exportador como el maíz se encuentran relegados en términos de aplicación tecnológica. En …

Export Demand Estimation For U.S. Corn And Soybeans To Major Destinations, Sayed Y. Saghaian

Theses and Dissertations--Agricultural Economics

The United States is the leading producer and exporter of corn and soybeans in the world. The United States exports 20% of the world’s corn and 30% of soybeans in a typical year (USDA, ERS). The U.S., being the top producer and exporter of these commodities, is also confronting major rivals such as Argentina, Brazil, and Ukraine, which are increasing their exports and causing the U.S. to lose some of its market share. In order to stop this decline in market share, the U.S. can adopt and implement different policies to manage resources and employ advanced technology more effectively.

In …