Browsing Auburn Theses and Dissertations by Department "Crop Soils and Environmental Sciences"
Now showing items 61-80 of 102
Influence of Cover Crops and Fertility Management on Soil Health and Soil Microbial Community
(2021-11-19)
The southeastern United States has a long history of soil degradation due to intensive agriculture, and conservation agriculture practices aim to improve soil productivity. Conservation management practices include nutrient ...
Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton
(2024-04-25)
In mid-South, southeastern, and northeast United States soybean production regions, the evolution of herbicide-resistant weeds has become a significant management challenge for growers. The issue of rising herbicide costs ...
Integration of physiological and molecular approaches for selecting peanut genotypes with superior drought tolerant and nitrogen fixation traits
(2019-12-10)
The vulnerability of peanut to drought varies depending on physiological characteristics, crop growth stages, and environmental conditions. This study examined the effects of drought stress on symbiotic nitrogen fixation ...
Interactions of "Forever Chemicals" – Per and Polyfluoroalkyl Substances with Dissolved Organic Matter Extracted from Commonly Employed Soil Organic Amendments
(2022-08-15)
Per- and polyfluoroalkyl substances (PFAS) are a large group of chemicals that are highly persistent and ubiquitous in the environment. These compounds, known for their adverse effects on humans and the ecosystem, reach ...
Investigating Reniform Nematode Resistant Genotypes in Combination with Velum Total in Cotton Gossypium hirsutum L.
(2018-12-03)
Cotton, Gossypium hirsutum L., is an important commodity traded in the world market in terms of volume and value. Reniform nematode (Rotylenchulus reniformis) (RN) reduces and limits cotton yields. . At present, nematicides ...
Investigating Soil Parameters Effect on Crop Yields and Hydrology at Field Scale in the Southeast US Using the Soil and Water Assessment Tool
(2020-05-20)
Over the past forty years, the Apalachicola–Chattahoochee–Flint (ACF) river basin in Alabama, Georgia, and Florida has been the subject of numerous litigation and research regarding water allocation. The state of Georgia’s ...
Investigating Soybean Test Weights for Cultivar Development
(2021-08-02)
Soybean test weight is a characteristic that has recently become of interest to both plant breeders and growers. The official weight of a bushel of soybean is 60 lbs bu-1 (75.7 kg hL-1). This standard is used to convert ...
Investigating the relationship of increased biomass and nutrient content of soybean (Glycine max merr)
(2022-04-27)
Declining nutrient concentration in higher yielding cultivars is evident in literature meta-analyses assessing cultivars developed over the last century and studies performed under elevated CO2 to artificially increase ...
Irrigation Effects on Corn (Zea mays) and Soybeans (Glycine max L.) Yield in Clay Soils in the Alabama Blackland Prairie Region
(2024-04-30)
Precise estimates of irrigation yield effects are essential for farmers when making irrigation investment decisions. The project goal is to improve our knowledge of irrigation yield effects in the soils of the Alabama ...
MBI-3X Bio-Nematicide Plant Health Effects on Root Crops
(2018-04-17)
MBI-3X is a new nematicide formulated from fermented and killed microbial broth. The broth contains large amounts of dead cells and an array of secondary metabolites in the fermentation supernatant with a corresponding ...
Methiozolin Effects on Annual Bluegrass Control at Various Seasonal Timings and Creeping Bentgrass Injury in Shade
(2019-01-03)
Methiozolin is a new herbicide with efficacy against annual bluegrass (Poa annua L.; ABG) and is being investigated as a selective herbicide in creeping bentgrass (Agrostis stolonifera L.; CBG) golf course greens, tees and ...
Phosphorus Characterization of Alabama Soils and Evaluation of Extractants for Environmental Phosphorus Loss Risk Assessment
(2020-08-03)
Poultry industry is the second largest agricultural industry in Alabama and generates 1.5 million tons of poultry litter, which contains approximately 19,000 tons of phosphorus (P). Long term application of fertilizers and ...
Planting Date and Seeding Rate Effect on Corn Yield for Replant Decisions in Alabama
(2024-04-18)
Corn yield is heavily influenced by plant population and planting date, and understanding the relationship between these is essential for optimizing yield. Poor stands and non-uniform plant density present significant ...
Radish Cover Crop Growth and Compaction Alleviation Potential in Southeastern Coastal Plain Soils
(2019-11-19)
Soil compaction in the form of hardpans often restricts cash crop root growth in the southeastern U.S., reducing plant vigor and yield potential for crops with deep taproots such as cotton (Gossypium hirsutum). Planting ...
Reconstructing Paleoenvironmental Conditions of Northern Alabama Utilizing Guano Cores
(2019-08-18)
The need to understand long-term precipitation patterns in the southeast United States are of great concern considering human population increase, climate change, agricultural production and environmental stressors. Current ...
Reducing Topramezone Injury to Bermudagrass Utilizing Micronutrients
(2020-12-01)
Bermudagrass (Cynodon dactylon L. Pers.) is one of the most common turfgrass species planted throughout the United States on golf courses, home lawns, and sports fields. Bermudagrass is able to tolerate a wide variety of ...
Response of Susceptible and Putative Resistant Goosegrass (Eleusine indica) Populations to Protoporphyrinogen Oxidase Inhibitors
(2017-12-08)
Goosegrass is considered one of the five most troublesome weeds in the world (Holm, 1991). Goosegrass is commonly found in high traffic and stress areas where the desired turf is thin and vulnerable for weed infestations. ...
Screening for target spot (Corynespora cassiicola) resistance in cotton (Gossypium hirsutum L.)
(2019-04-18)
A critical problem for Alabama cotton growers is the presence of target spot (Corynespora cassicola), a foliar disease which is responsible for combined annual yield losses of >$70 million in AL, GA and the FL Panhandle. ...
Sediment and Nutrient Transport Through a Reservoir Sequence Along a Large River System
(2019-07-23)
Reservoirs are depositional environments for suspended sediments in river systems. Due to sediments undergoing fallout in low-flow areas, reservoirs contain 26% of all sediment and 12% of global river phosphorus behind ...
Seeding Rate Effect on Soybean Grain Yield
(2021-12-13)
Increasing costs of soybean seed as well as new varieties, seed treatments, and production practices required a reevaluation of seeding rate recommendations. Previously recommended seeding rates do not account for new ...