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Beneficial Reuse of Municipal Biosolids in Agriculture (SB 27) Farmers have known for centuries that animal manures spread on pastures and cropland can improve soil fertility. In the 1920s, farmers began to use sludge from municipal wastewater treatment plants as a fertilizer. Through decades of research, the scientific and agricultural communities have come to understand that municipal sludge or "biosolids" contain valuable nutrients and organic matter that …

Calculating the Fertilizer Value of Broiler Litter (C 933) This publication gives a procedure to calculate the value of broiler litter based on prevailing retail selling prices of commercial fertilizers containing nitrogen, phosphorus and potassium.

Calibration Method for Sprayers and Other Liquid Applicators (C 683) This publication discusses the proper calibration methods sprayers and other liquid applicators.

Calibration of Dry Broadcast Fertilizer Applicators (C 798) Spinner-disc spreaders are commonly used for applying lime and fertilizer to agricultural fields. Uniform and accurate application of lime and fertilizer is essential. The performance failures of agricultural materials can be directly related to improper and uneven application, careless equipment operation, and the separation of blended material due to size and density differences. The uneven dist…

Calibration of Manure Spreaders (C 825) This publication primarily focuses on rear discharge, twin spinner spreaders common for poultry litter application in the southeast.

Chemigation in Georgia (B 1298) Chemigation is an inclusive term referring to the application of a chemical into or through an irrigation system. It includes the application of fertilizers, acids, chlorine and pesticides. Chemigation can save time, reduce labor requirements, and conserve energy and materials. Chemigation is beneficial, however, only to the extent that the irrigation system is adequately designed, fully functiona…

Drip Chemigation: Injecting Fertilizer, Acid and Chlorine (B 1130) Drip irrigation is an important component of vegetable production systems in Georgia. Drip irrigation is more desirable than other irrigation methods for several reasons. Two important advantages are (1) water conservation and (2) potentially significantly improving fertilizer management. Fertigation is the timely application of small amounts of fertilizer through drip tubes directly to the root z…

Drip Fertilizer Schedule Recommendations for Vegetable Crops in Georgia Coastal Plain Soils (C 1325) A soil test is a chemical technique used to determine the status of available nutrients in a soil sample. It is a common method used to predict how soils will react to the addition of lime or fertilizer and calculate how much of each is required for crop production.

Fertilizer Injectors: Selection, Maintenance and Calibration (B 1237) Fertilizer injectors are devices used to apply water-soluble fertilizers, pesticides, plant growth regulators, wetting agents and mineral acids during crop production. They are a vital part of modern greenhouse or nursery operations. Despite the advantages, many growers have had at least one experience with a compromised, damaged or even ruined crop where the cause was traced to a malfunctioning i…

Fertilizing Blueberries in Pine Bark Beds (B 1291) Grower experiences have proven milled pine bark to be an excellent growing substrate for southern highbush blueberries. Although milled pine bark shares many characteristics with good blueberry soil, fundamental differences exist and need to be understood for rapid growth of young plants and high blueberry yields.

Guidelines for the Four Rs of Fertilizer Management in Horticultural Crops (B 1531) Excessive fertilization does not equate to greater crop yields. Crop yields are optimized when nutrients are efficiently used, which requires fertilizer applications to be based on the right source, the right time, the right rate, and the right placement. These are referred as the four Rs of fertilizer management, whose purpose is to supply plants’ nutrient requirements, reduce production costs, a…

How to Convert an Inorganic Fertilizer Recommendation to an Organic One (C 853) Many farmers and gardeners use natural minerals and organic fertilizers rather than synthetic ones to build their soil. If you use organic materials as all or part of your fertilization program, this publication will help you calculate the proper amount to use from the recommendations provided by a soil test.

Land Application of Livestock and Poultry Manure (C 826) This publication provides information on (1) the nutrient content of manures available for land application, (2) how to determine manure application rates and whether supplemental fertilizer will be needed for maximum crop production and (3) how to use management techniques to maximize the fertilization potential of farm manures.

Land Application of Pulp Mill Lime Mud (B 1249) Lime mud is a by-product produced in pulp mills as part of the process that turns wood chips into pulp for paper. The pulp mill cooks wood chips with sodium hydroxide to extract the wood fiber used to make paper from the lignin that binds the wood together. During this process, sodium hydroxide is converted to sodium carbonate. The pulp mill than adds calcium oxide, also known as quicklime, to con…

Procedure for Calibrating Granular Pesticide Applicators (C 818) Applicators used in granular applications should be calibrated to ensure uniformity and accuracy. An accurate and uniform application can reduce the quantity of an active ingredient required for a given degree of control.

Recommended Practices for Using Wood Ash as an Agricultural Soil Amendment (B 1147) This publication covers a procedure for applying wood ash as a lime substitute on agricultural lands. This method can be used by manufacturers and dealers who wish to supply wood ash or by landowners who wish to receive wood ash. If the practices in this publication are followed, there should be no adverse environmental effects or regulatory consequence from the land application of wood ash.

Regulations for On-Farm Storage Tanks in Georgia (B 1136) This publication provides a brief overview of the major regulatory agencies and highlights the rules that Georgia farmers should be aware of concerning storage tanks on their farms.

Sourcing Soil Amendments for Small-Scale Farms and Gardens (C 1272) Whether from a local store, regional supplier, or another farmer down the road, understanding where your soil amendments come from and how they were handled prior to reaching your farm or garden is necessary to ensure you are sourcing the highest quality product with the lowest amount of risk.

Southeastern Peach Growers' Handbook Series: Orchard Sprayers (B 979) This publication contains comprehensive information about air blast and weed control sprayers for orchards.

Sprayer Nozzle Selection (B 1158) Nozzle selection is one of the most important decisions to be made related to pesticide applications. The type of nozzle affects not only the amount of spray applied to a particular area, but also the uniformity of the applied spray, the coverage obtained on the sprayed surfaces, and the amount of drift that can occur. Each nozzle type has specific characteristics and capabilities and is designed …

Suggested Blueberry Fertilization Timings and Rates (C 1163) Fertilization is an important practice of maintaining plant health. The blueberry plant is no exception, but there are important considerations when fertilizing blueberries. The rates, timing, and type of fertilizer should be common knowledge for the grower. In this circular, how to fertilize blueberry plants is described with text, diagrams, and calculations to provide growers, Extension agents, …

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