This Is AuburnElectronic Theses and Dissertations

Browsing by Department "Crop Soils and Environmental Sciences"

Now showing items 81-100 of 102

Soil- and Foliar-Applied Potassium in Upland Cotton (Gossypium hirsutum L.) Production 

Wendland, William Howard Smith (2019-12-20)
Soil test recommendations for upland cotton (Gossypium hirsutum L.) fertility are often based on varieties which are no longer in production, meriting questions on whether increased potassium (K) is needed for new varieties ...

Southeastern U.S. Upper Coastal Plain Ecological Sites for Dynamic Soil Property Characterization 

Platt, Jenna (2021-01-07)
The Ecological Site (ES) concept groups soils that respond similarly to management to meet conservation goals, develop site interpretations and models for ecological transitions, and construct restoration pathways. The ...

Soybean growth response to inoculation with plant growth-promoting rhizobacteria supplemented with orange peel amendment 

Pacheco da Silva, Maria Leticia (2022-04-19)
In order to meet the projected global food demand from population by 2050, current crop production will need to double. In this context, researchers are studying sustainable strategies to improve nutrient absorption by the ...

Soybean Phenotypic Variation Under High Night Temperature Stress 

Shu, Tianchu (2021-04-19)
Soybean is the fourth most important commodity crop globally grown on over 83.1 million acres in the United States. Crop yield is required to increase a 50% to satisfy the demand of a growing population that will increase ...

Soybean Root Growth and Yield Response to Variable Rate Irrigation 

Carter, Luke (2018-04-18)
A changing climate and an increasing world population result in a greater need of food. Water secures and increases yield. However, water use and irrigation timing need to be optimized to limit negative effects on natural ...

Spatial Relationships of Suspended Solids and Phosphorus in Bioretention Cells 

Douglas, Hallie (2017-11-17)
Bioretention cells (BRCs) are a stormwater practice designed to infiltrate, store, and treat stormwater. These cells help to mitigate stormwater flow volume, flow rate, and remove nutrients. Suspended sediments that are ...

Spatiotemporal Analysis of Ecosystem Degradation in a Gulf of Mexico Estuary System 

Metz, Alexander (2019-05-14)
Coastal estuaries are a vital resource that provide many environmental and socioeconomic benefits. Despite their value, increased anthropogenic influence has resulted in ecosystem degradation due to eutrophication in coastal ...

The Spatiotemporal Variation of Sediment Characteristics and Nutrient Deposition in Two Coosa River Reservoirs 

Orndorff, Tristan (2021-05-18)
Reservoirs create biogeochemical hotspots along river systems by trapping sediments and nutrients from their river watersheds. This study aims to understand sediment transport and nutrient deposition through time and space ...

Stewardship of Synthetic Auxins in 2,4-D and Dicamba–resistant Crops and Mitigation of Off-target Movement 

Browne, Frances (2020-05-14)
A series of greenhouse, field, and laboratory experiments were conducted to evaluate preemergence (PRE) and postemergence (POST) herbicides for Palmer amaranth (Amaranthus palmeri L.) control in addition to assess the ...

Stormwater Quantity and Quality: An Assessment of Runoff Probability Estimation Methods and the Effects of Bioretention Soil Mixtures on Aquatic Toxicity 

DeGuzman, Kelly (2024-04-24)
Stormwater runoff occurs when precipitation exceeds the available storage of a watershed. Urbanization changes the natural hydrology of a watershed as cover types, slopes, flow paths, and antecedent moisture conditions ...

A study for understanding climate-induced crop production risk and relevant climate hazards in a changing environment 

Schillerberg, Tayler (2024-05-15)  ETD File Embargoed
Climate change poses significant challenges to global agriculture by influencing crop production through various climatic factors such as precipitation, temperature, solar radiation, and atmospheric gases. These factors ...

Target Site Resistance Mechanism of Protoporphyrinogen Oxidase Inhibiting Herbicides in Eleusine indica 

Bi, Bo (2021-07-06)
Goosegrass is considered as one of the five most troublesome weeds in the world. Protoporphyrinogen oxidase (PPO) with two isoforms, chloroplast targeted (PPO1) and mitochondrial targeted (PPO2), is a step in the biosynthesis ...

Topramezone for bermudagrass control and mitigation of seashore paspalum and creeping bentgrass injury with additive products 

Gonçalves, Clebson (2019-10-28)
Methods for managing bermudagrass (Cynodon spp.) invasion of seashore paspalum (Paspalum vaginatum Sw.) are limited. In 2016 and 2017, a field study at Auburn University evaluated ‘Tifway’ bermudagrass (Cynodon dactylon ...

Towards a better understanding of host-associated genetic markers for identification of fecal pollution sources in environmental waters 

Ren, Wenjing (2023-09-06)  ETD File Embargoed
Fecal contamination of surface water is a major public health concern and threatens ecosystem health. The water quality of many waterways in the United States has been declining due to pollution from both point and nonpoint ...

Transmission and Host Plant Resistance of Cotton leafroll dwarf virus (CLRDV) in the Southeastern United States 

Heilsnis, Brianna (2020-11-16)
Cotton leafroll dwarf virus (CLRDV) is an aphid transmitted Polerovirus responsible for severe yield losses in Brazil and is the first virus reported to infect cotton in the Southeastern United States. As a new strain, ...

Uncovering different physiological mechanisms of peanut drought tolerance under mid-season drought in automated Rain-out Shelters 

ZHANG, QIONG (2021-11-18)
Peanut is an economic cash crop mainly planted in arid and semi-arid regions where the drought causes around 20% loss of peanut production every year. Research suggested that crops have various physiological mechanisms ...

Unravelling the genetic mechanisms for target spot resistance in soybean 

Patel, Sejal (2022-11-29)  ETD File Embargoed
Soybean production has grown over the years and has become one of the main crops in the world. Biotic stress is an obstacle to soybean production, and developing resistant varieties is one of the major focuses of soybean ...

Upland Cotton Cultivar Evaluation for Reaction to Corynespora cassiicola 

May, Jenna Kay (2018-11-15)
Target spot of cotton (Gossypium hirsutum L.) is caused by the fungus Corynespora cassiicola (Berk. & Curt. C. T. Wei.) and has become a recent problem in cotton in the humid, southeastern states. Primarily occurring in ...

Use of Source-Separated Human Urine to Enrich an Ultisol of the Southern Coastal Plain of the United States 

Medina, Steven (2018-11-16)
Source-separated human urine (SSHU), human urine intentionally diverted and kept separate from feces, has many environmental and agronomical uses. The principal objectives of this research were to investigate SSHU use in ...

Using Sediments to Identify Drivers of Cyanobacteria, Cyanotoxins, and Eutrophication in the Shallow, Subtropical Lakes of Florida, USA 

Lamb, Avery (2021-08-02)
Nutrient eutrophication and cyanobacteria dominance has increased in lake systems throughout the world over the last two decades, with growing concerns over decreases in ecosystem services and the toxins that some cyanobacteria ...