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Comparison Of Private And Public Lab Fertilizer Recommendation Impacts On Field Crop Production And Soil Test Results, Megan Baker
Comparison Of Private And Public Lab Fertilizer Recommendation Impacts On Field Crop Production And Soil Test Results, Megan Baker
All Graduate Theses and Dissertations, Fall 2023 to Present
There are many sources that farmers utilize to determine fertilizer needs for crops such as private and public labs, crop advisors, and fertilizer dealers. In many cases, these sources provide recommendations for a specific crop that can vary greatly, which can lead to large differences in cost. An experiment was established in 2021 with 12 sites across the state of Utah in alfalfa, small grains, and corn to test and compare fertilizer recommendations from five labs. The recommendations tested were from two public labs (Utah State University and the University of Idaho) and three commercial labs located in the Western …
Investigating Autonomous Ground Vehicles For Weed Elimination, Abraham Mitchell
Investigating Autonomous Ground Vehicles For Weed Elimination, Abraham Mitchell
Computer Science and Computer Engineering Undergraduate Honors Theses
The management of weeds in crop fields is a continuous agricultural problem. The use of herbicides is the most common solution, but herbicidal resistance decreases effectiveness, and the use of herbicides has been found to have severe adverse effects on human health and the environment. The use of autonomous drone systems for weed elimination is an emerging solution, but challenges in GPS-based localization and navigation can impact the effectiveness of these systems. The goal of this thesis is to evaluate techniques for minimizing localization errors of drones as they attempt to eliminate weeds. A simulation environment was created to model …
Stacking And Intersecting Nutrient 4rs On Potato, Samuel Hamilton Stapley
Stacking And Intersecting Nutrient 4rs On Potato, Samuel Hamilton Stapley
Theses and Dissertations
The 4Rs of nutrient management is a global agronomic initiative with an aim to improve the sustainability of major cropping systems and the environment. The objective for this project is to evaluate individual and stacked 4R management practices and how they intersect. A field trial near Grace, Idaho was conducted on potato (Solanum tuberosum L.) in 2020 and 2023. Nitrogen (N) fertilizer treatments included all combinations of two sources [urea or polymer coated urea (PCU)], two rates (82 or 100% of the recommended rate), and/or two timing/placements (all applied at emergence or 84% at emergence + 16% fertigation simulation) compared …
Environmental Implications Of Modern Food Production: An Analysis For The Conscious Consumer, Jessica T. Coming
Environmental Implications Of Modern Food Production: An Analysis For The Conscious Consumer, Jessica T. Coming
Cal Poly Humboldt theses and projects
This project explores the pathways by which agriculture affects the environment and determines which foods have the greatest climate, water, and land impacts. Agricultural effects on the environment are extensive, from loss of habitat and declines in regional biodiversity to disruption of global nutrient cycles and climate change. Global food production accounts for 26-34% of annual anthropogenic greenhouse gas emissions, makes up 38-46% of habitable land, and is responsible for 70% of freshwater extraction. The effect of agriculture on the environment is most significantly dictated by what type of food is being produced. Animal-based food products consistently have the highest …
A Conservation Model: Costa Rican Conservation Strategies Effectively Preserve Their Threatened Primates, Ryan Belmont
A Conservation Model: Costa Rican Conservation Strategies Effectively Preserve Their Threatened Primates, Ryan Belmont
Regis University Student Publications (comprehensive collection)
The wildlife of Costa Rica has experienced various anthropogenic threats over the last century including climate change and agricultural expansion. The mantled howler monkey (Alloutta palliata), Central American spider monkey (Ateles geoffroyi), white-faced capuchin (Cebus imitator), and the Central American squirrel monkey (Saimiri oerstedii) are Costa Rica’s native primates that face several anthropogenic threats such as deforestation for agriculture and climate change. In response to increased threats to its four native species of non-human primates, Costa Rica has implemented effective governmental conservation tactics such as the Payments for Environmental Services program, ecotourism …
Assessment Of Open Top Chambers To Simulate Effects Of Climate Change On Soil Temperature And Cover Crop Response In Agricultural Systems, Gretchen Bahmueller
Assessment Of Open Top Chambers To Simulate Effects Of Climate Change On Soil Temperature And Cover Crop Response In Agricultural Systems, Gretchen Bahmueller
Honors Theses and Capstones
Climate change is expected to yield warmer winters that have the potential to place additional stress on our already stressed agricultural systems. Understanding how agricultural systems may respond to these changes is essential to creating crop and land management plans that ensure food security for future generations. To better understand how warming winters can/will affect air and soil temperatures and cover crop performance, open top chambers (OTCs) were deployed post cover crop seeding in a field experiment at the UNH Kingman Research Farm in Madbury, NH. The experiment consisted of four cover crop treatments sown into or after corn: an …