Crop and Soil Sciences
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Properly maintaining, calibrating, and adjusting a seed drill before planting is an important part of ensuring the successful establishment of forage or cover crops. Seed may be placed at a depth that is too deep or too shallow if the equipment is not properly prepared and set. Too much or too little seed may be planted if the equipment is not properly calibrated. These planting mistakes may result in a poor stand, greater weed competition, lower yields, and/or reductions in forage quality. Conversely, planting more seed than required can unnecessarily increase establishment costs and can sometimes result in reduced yields. After investing in the seed and committing the time to plant a field, taking a few extra steps to ensure that investment bears fruit is well worth maintaining, calibrating, and adjusting the drill.
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AP 124-1
2021 Georgia Cotton Production Guide
The 2021 cotton production guide provides an in-depth look at cotton production in Georgia and the southeastern United States. 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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The peanut production guide includes varieties, agronomic practices, pest management, irrigation management, equipment maintenance, maturity, and harvest practices.
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Boom sprayer calibration using conventional methods (catching flow for certain time or distance) for large (60-90 ft; 54-72 nozzles) boom sprayers can be a time-consuming process. This short publication outlines steps to take to verify nozzle output and calibrate a boom sprayer, including tables with useful information on flow rates at multiple speeds for two common nozzle spacings and an equation for calculating rates if needed.
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AP 124-2
2022 Georgia Cotton Production Guide
The cotton production guide provides an in-depth look at cotton production in Georgia and the southeastern United States. 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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B 892
Irrigating Tobacco
This publication is a comprehensive guide to irrigation methods for tobacco in Georgia.
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Johnsongrass (Sorghum halepense) is a warm-season perennial weed in pastures and roadsides throughout central and northern Georgia. Populations may germinate from seed in spring after overwintering in the soil. However, Johnsongrass primarily emerges from dormant rhizomes in areas with a history of infestations. Rhizomes are belowground stems that produce daughter plants and storage reserves for new growth in spring. The persistence of Johnsongrass is primarily associated with extensive rhizomatous growth that enable populations to spread laterally and dominate areas by preventing desirable species from flourishing.
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This bulletin describes a recommended procedure to measure soil saturated hydraulic conductivity (Ks) with a borehole permeameter and convert this value to estimates of percolation rate for on-site wastewater treatment systems. Saturated hydraulic conductivity is a fundamental hydraulic parameter for soil water flow and it is defined as the ratio of the water velocity to the hydraulic gradient. This bulletin also provides information on a computer-based program to help calculate saturated hydraulic conductivity.
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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 2021. 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 Vegetable Commodity Commission.
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