Browsing Auburn Theses and Dissertations by Department "Crop Soils and Environmental Sciences"
Now showing items 21-40 of 134
Cotton Stalk Management and Cover Crop Use on CLRDV Incidence and Soil Properties
(2023-07-10)
Cotton leafroll dwarf virus (CLRDV) was reported in cotton (Gossypium hirsutum L.) in Alabama in 2017. CLRDV can now be found as far west as Texas, and as north as Virginia. Due to such wide distribution and potential yield ...
Cover Crop Effects on Insect Dynamics in Cropping Systems of the Southeastern U.S.
(2020-11-16)
Evidence suggests winter cover crops could be useful for augmenting conservation biological control of insect pests in southeastern row crop systems. Management decisions such as selection of cover crop species and irrigation ...
Cover Crop Effects on Soil Hydrology
(2022-05-09)
Cover crops are known for their positive and significant effects on soils. They contribute to
growing subsequent crops, reducing soil erosion, increasing water infiltration, and improving nutrient management. Cover crops ...
Cover Crop Effects on Urease Inhibitors
(2018-07-23)
Urease inhibitors continue to be introduced in the agricultural market, and thus new studies with these products are warranted. The objective of this research was to examine the utility of these inhibitors for reducing ...
Cover Crop Management and Nutrient Type Effects on Collard and Cotton Growth
(2024-12-10)
Producing fresh vegetables and fiber, such as collards (Brassica oleracea L. var. viridis) and cotton (Gossypium herbaceum L.), in cover crop residue while minimizing soil disturbance can be helpful in lowering environmental ...
Cover Crop Management Practices to Improve Soil Health and Weed Suppression in Cropping Systems
(2023-11-27)
Introducing integrated crop-livestock systems into row crop production may provide incentives for producers to plant cover crops and promote soil health benefits on degraded soils of the southeastern United States, but ...
Cyanotoxin Production in Subtropical Lakes over the Last 150 Years with Implications for Human and Ecosystem Health
(2022-12-02)
Lakes are experiencing a modern period of increased eutrophication due to cultural impacts and climate change. One common characteristic of lake eutrophication is the increase in cyanobacteria, which possess a competitive ...
Data-Driven Agroclimate Modeling and Forecasting Based on Earth Observations and Predictions: A Study of Evapotranspiration, Precipitation, and Crop Yields
(2020-04-17)
Meeting the growing food demand in a sustainable manner is the main challenge faced by agriculture, at a time when the climate changes increasingly threaten food security. Innovative agro-climate approaches are needed to ...
The Distribution of Phosphorus Pools in Alabama Soil Regions and their Variation with Soil Depth
(2022-05-16)
The poultry industry in Alabama is the state's second-largest agriculture industry generating approximately 1.25 million tons of poultry litter (PL) annually and containing 19,000 tons of phosphorus (P). The PL has a typical ...
A DSSAT-Based Framework for Site-Specific Nitrogen Management in Winter Wheat: Evaluating Long-Term Weather Effects on Nitrogen Loss Variability Across Yield Zones
(2026-03-24)
Nitrogen (N) fertilizers are essential for sustaining the productivity of winter wheat in
humid agroecosystems; yet their management poses a significant dual challenge: optimizing farm
profitability while reducing ...
Effect of Broiler Litter and Swine Liquid Manure on Sediment and Nutrient Loading under Conventional and No-Tillage System
(2024-07-30)
Manure is an important source of plant nutrients, primarily nitrogen (N) and phosphorus (P), as well as organic matter for improving soil health. However, agricultural activities, such as land application of manure, are ...
Effect of Broiler Litter Stockpiling Methods on Nutrient Transformations and Ammonia and Greenhouse Gas Emissions
(2025-07-24)
The United States (US) is the largest producer and supplier of poultry products worldwide and produces 9.16 billion broilers annually. In the US, 41% of the broiler industry is located in the southeastern region, accounting ...
Effect of Cover Crops on the Critical Period for Weed Control in Soybean and Corn
(2024-04-22)
Soybean is the world’s most widely grown leguminous crop and is an important source of
oil and protein for food and feed in addition to other industrial uses. However, herbicide-resistant
and troublesome weed control ...
Effect of Phosphorus Fertilizer Placement on Corn and Soybean Yield in Phosphorus Stratified Soils of Alabama
(2023-06-27)
Alabama has highly weathered soils making them prone to erosion during intense precipitation events. Adopting conservation tillage practices is encouraged to minimize soil erosion and improve soil health. Currently, Alabama ...
Effect of Plant Growth Regulators and Biostimulants with and Without Foliar Nutrition on Reduced-Lignin Alfalfa (HarvXtra®)
(2021-08-05)
Known as the “Queen of Forages,” alfalfa (Medicago sativa L.) is regarded for its high protein content and palatability, making it the preferred feedstuff for high-producing dairy cows. The introduction in (2005) of ...
Effect of Real and Simulated Traffic on Coated Fertilizer Prill Integrity and Nitrogen Release
(2017-01-10)
The amount of nitrogen (N) from air and soil is not sufficient to produce high quality turfgrass, and thus N fertilizers are often applied. Urea is the most widely-produced and commonly-traded N fertilizer, containing 46% ...
Effect of rhizobial 1-aminocyclopropane‐1‐carboxylate (ACC) deaminase on soybean drought tolerance
(2025-04-21)
Although soybean (Glycine max L. Merr.) obtains nitrogen through symbiotic nitrogen fixation, its grain yield is constrained by drought stress. The production of the plant hormone ethylene tends to increase under stress ...
Effects of Cover Crop Mixtures on Biological Indicators of Soil Health under Conservation Systems
(2019-02-04)
Soil management practices affect the health and productivity of agroecosystems. Cover crops, which are grown between periods of cash crop production, play a critical role in building healthy soil. The most obvious benefit ...
Effects of Drought Stress on Floral Hemp (Cannabis sativa L.) Agricultural Systems
(2023-04-18)
Hemp (Cannabis sativa L.) is a crop of renewed interest in modern agriculture. However, for it to be considered hemp and not marijuana, it must have a total THC concentration of no greater than 0.3%. Drought is a common ...
Effects of Litter Amendment in Reducing Ammonia and Greenhouse Gas Emissions from Broiler Litter
(2024-07-30)
The United States is the largest poultry producer, consumer, and exporter of poultry products. The broiler industry constitutes 60% of the total poultry industry and produces approximately 9.17 billion broilers annually ...