Publications By Jason Lessl

2020 Vidalia Onion Extension and Research Report (AP 114-2) This annual publication includes a report of 2019-20 onion research variety trials and Extension activity at the University of Georgia College of Agricultural and Environmental Sciences. The report co…

An Introduction to Hemp Chemistry and Lab Results (C 1209) With the passage of the 2018 U.S. Farm Bill, industrial hemp (Cannabis sativa L.) was declassified as a Schedule I drug and is now legal (with restrictions) for production in the United States. Hemp a…

Determining Lime Requirement Using the Equilibrium Lime Buffer Capacity (C 874) Soil pH is an important chemical property because it influences the availability of soil nutrients for plant uptake, and it affects a crop's root system development. Soil pH also indicates whether lim…

Household Water Treatment Series: Mechanical Filtration Methods and Devices (B 1523) Mechanical filtration removes suspended solids and dirt to greatly improve the clarity of water. Various kinds of mechanical filtration methods and devices are available for home water treatments. Pri…

Iron (Manganese) and Sulfur Bacteria in Your Well Water (B 1457) Presence of bacteria in your drinking water supply does not necessarily pose a health hazard. Certain types of bacteria in household water are more of a nuisance issue. Your water may test negative fo…

Irrigation Water Quality for Agriculture (B 1448) With growing demands for potable (suitable for drinking) water (due to population increase) and expanding irrigated acreage, there is an increased pressure on irrigated farms to consider using nonpota…

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…

Metal Concentration Standards for Land Application of Biosolids and Other By-Products in Georgia (B 1353) This bulletin provides the general public a quick reference for some commonly used standards for metal concentrations in biosolids and various by-products intended for land application. Most of the st…

Soil Organic Matter (C 1299) Soil organic matter (SOM) is a complex mixture of plant and animal tissues, and plays an important role in the physical, chemical, and biological processes in the soil. This publication describes how …

Soil Sampling Grid Size Considerations for Site-Specific Nutrient Management (C 1297) This publication provides information on selecting an optimal soil sampling grid size that can accurately depict spatial nutrient variability within the fields in the southeastern US and helps in info…

Soil Test Extractants: Principles, Applications, and Implications (C 1322) Soil test extractants are chemical solutions used to dissolve or exchange nutrients in soil samples. They are used when performing soil analyses to determine nutrient recommendations.

Soil Testing for Home Lawns, Gardens and Wildlife Food Plots (C 896) Developing and maintaining productive soils begin with soil testing. Soils tests provide information on the soil's actual nutrient status. Test results are used to determine the amount and kind of nut…

Urban Gardening: Assessing Soils for Contamination (C 1075) Urban gardeners and farmers may have concerns about potentially harmful contaminants in their soils. By determining the historical use of the land, one can test for soil contamination associated with …

Watson Training System for Bunch Wine Grapes (B 1522) There are two main trellising system categories: divided and single canopy. Jerry Watson, a grape grower and owner of Austin County Vineyards in Cat Spring, Texas, developed the divided canopy “Watson…