Crop and Soil Sciences
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AP 124-3
2023 Georgia Cotton Production Guide
The 2023 edition of the cotton production guide provides an in-depth look at cotton production in Georgia and the Southeastern U.S. Issues discussed include economic outlook, fertility, weed management, insect management, disease and nematode management, irrigation decisions, precision ag technology, and general agronomics of the cotton crop (varieties, PGR applications, defoliation, etc.).
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This circular is a review of water quality standards, calculations, and recommendations for water that will be used for irrigation of blueberries.
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With rising fuel prices it is increasingly important that irrigation systems apply water uniformly in order to achieve maximum benefit from the water applied. The uniformity of water application under a center pivot is determined by setting out cans or rain gauges along the length of the pivot, bringing the irrigation system up to proper operating pressure, and letting the system pass over them.
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This publication is an annually-updated guide to fall gardening information and resources for Georgia. Topics include planting tall fescue lawns, soil bag flower beds, planting pansies like the pros, planting collards, turnips and cabbage, planting a home fruit orchard, mulching with leaves, gardening chores, cleaning and storing garden tools, treating for fire ants, and additional resources.
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The purpose of this publication is to serve as an educational
reference and resource to those who are interested
in animal feeding and nutrition. Our primary objective
is to list the common terms used when discussing animal feeding. This listing will also be helpful when reading articles on animal feeding and nutrition, feed analysis reports or tags associated with feeds sold in the market.|
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This publication provides information on pulse width modulation (PWM) technology including its working principle, components, benefits, and best management practices for its optimal utilization on agricultural sprayers. Agricultural sprayers are commonly used for pesticide applications and come in various design types and sizes, including three-point hitch, pull-behind, and self-propelled. During pesticide applications, maintaining a target application rate across the whole field is important for effective pest management. On sprayers with traditional flow-based control systems, the liquid flow rate is regulated to account for ground speed variations by adjusting the spray pressure. However, this becomes an issue when spray pressure reaches outside the narrow operating range of the selected nozzle and results in non-uniform droplet size and pattern. Higher spray pressures at faster travel speeds produce finer droplets which are more prone to spray drift; applications at lower pressures produce coarser spray droplets and reduce spray fan angle. Pulse width modulation technology was developed to overcome this pressure variation issue; pulse width modulation does not rely on spray pressure to regulate system flow rate with changes in ground speed. In pulse width modulation systems, the flow rate is varied by changing the intermittent cycling of the electronically actuated solenoid valves while the system pressure remains constant throughout the boom.
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A study was conducted in order to investigate the incorporation of dehumidification into the curing cycle of flue-cured tobacco. Multiple cures of cultivar K326 flue-cured tobacco were made over three harvesting seasons. Tobacco from the same source and stalk position was cured in a barn coupled to a heat-pump-dehumidifier and, for comparison, in a conventional barn heated with an open flame propane furnace. In the heatpump barn, dehumidification was applied during the lamina and stem drying phases, but not during the coloring and color-drying transition phases of the curing cycle. During successive cures of each season, modifications were made in the operation of the heatpump barn in order to improve performance. A procedure for curing with dehumidification was developed. Dehumidification was found to automatically raise temperature and reduce humidity, causing a set in lamina color. Tobacco cured in the heat-pump barn was found to have at least comparable quality with that cured in the conventional barn as determined by standard chemical analyses and USDA grade. There was a significant reduction of Tobacco Specific Nitrosamines (TSNA) in the tobacco cured in the heatpump barn as compared with tobacco conventionally cured. A short burst of high temperature heat was effective in finalizing stem drying in the heat-pump barn. Dehumidification constituted only 26.8 percent of the total energy use in the heat-pump barn.
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This report provides research and extension results for trials conducted by the University of Georgia Vegetable Team and its collaborators in 2022. Contributing authors include county and regional faculty as well as specialists from UGA’s horticulture, plant pathology, crop and soil sciences, and entomology departments. All research has been supported by the Georgia Commodity Commission for Vegetables.
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Selecting a qualified irrigation contractor is very important. There are many irrigation products available and the installation process requires skill, knowledge and equipment. This publication outlines general considerations for purchasers of a landscape irrigation system. It also underscores the importance of considering the cost of water when selecting a contractor and protecting desirable trees during the installation process.
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