Numbered Publications: AGR
AGR-6: Weed Control Recommendations for Kentucky Grain Crops, 2025
Travis Legleiter | Nov. 6, 2024 (Minor Revision)
The use of herbicides suggested in this publication is based on research at the Kentucky Agricultural Experiment Station and elsewhere. We have given what we believe to be the most effective herbicides, with the most suitable rates and times of application.
AGR-277: Using a Rising Plate Meter to Measure Pasture Growth: A Practical Guide
Echo Gotsick, Ray Smith | Oct. 14, 2024 (New)
Knowing pasture yields is very helpful for all livestock operations, especially cattle farms. High animal productivity is only possible with access to adequate quantities of high-quality forage. Previous research has shown a correlation between forage height and pasture yield. Height can be measured with tools as simple as a ruler, but this method often does not produce accurate yield estimates because pasture density is not taken into account.
AGR-282: Warm-Season Native Areas for Kentucky Golf Courses
Kenneth Clayton, Elizabeth Johnson | Sep. 25, 2024 (New)
The average golf course has a median footprint of about 150 acres, and natural or native vegetation covers approximately 17% of these acres. Golf courses often provide large green spaces in urban areas. Not all of these areas are highly maintained turfgrass; some are cultivated as native areas. Native areas may be defined as those areas on the golf course receiving very infrequent mowing and composed of one or more of the following: native warm-season grasses (NWSG), fine fescues, wildflowers, or previously maintained turfgrass allowed to reach maturity. Although golf courses may use species in these areas that are not native to Kentucky, this publication will focus on the utilization of native warm-season grasses. Colloquially, these parts of the golf course are referred to as native areas, native roughs, low-mow areas, or no-mow areas. For the purposes of this publication, they are all considered synonymous.
AGR-280: University of Kentucky Blue Water Farms: Status of the Edge of Field Nutrient and Sediment Monitoring Network in Western Kentucky (Project Years 2018-2023)
Leighia Eggett, Glynn Beck, Brad Lee, Erin Haramoto, John Grove | Sep. 23, 2024 (New)
Rainfall simulations were the common way of collecting agricultural runoff water quality samples four decades ago. In these simulations, surface water runoff flow characteristics and water quality constituents of interest (nutrients, sediment) were determined by sprinkling water ten feet from the soil surface over small area delineated by a frame and gutter system in the soil of cropped field. There were several limitations to this method, including small study areas and lack of repeatability throughout the growing season due to farming activities. Many different research designs have since been developed to remedy some of these limitations, such as edge of field (EOF) monitoring.
To gather continuous and field scale EOF data, researchers from the University of Kentucky Martin-Gatton College of Agriculture, Food and Environment and the Kentucky Geological Survey are partnering with the U.S. Department of Agriculture – Natural Resources Conservation Service, Kentucky Soybean Promotion Board, the Kentucky Agricultural Development Fund, and nine anonymous landowners to establish a network of 29 EOF water quality monitoring stations distributed throughout Western Kentucky, collectively known as Blue Water Farms.
AGR-250: Remediation of the Fragipan Using Annual Ryegrass
Dottie Call, John Grove, A.D. Karathanasis, Chris Matocha, Lloyd Murdock | Jul. 2, 2024 (Minor Revision)
The fragipan is a naturally occurring restrictive soil horizon that virtually stops water movement and root growth through the soil. It commonly is located 18-32 inches below the surface of most of Kentucky's fragipan soils.
AGR-278: Bermudagrass Control for Kentucky Lawns
Kenneth Clayton, Paul Andrew Rideout, Jason Vaughn, Beth Wilson | May. 24, 2024 (New)
Bermudagrass (Cynodon dactylon), a warm-season perennial grass, increasingly has become a problem in Kentucky cool-season turfgrass. Over much of the lower Southeastern United States, bermudagrass is the king of the turfgrasses. Celebrated for its aggressive growth habit, quick recovery, and ability to tolerate low mowing heights, bermudagrass can be found everywhere from high-end golf courses and prestigious sports stadiums to home lawns.
AGR-259: Multi-SOA Pre-emergence Herbicides for Palmer Amaranth and Waterhemp Control
Travis Legleiter | Apr. 24, 2024 (Minor Revision)
Waterhemp and Palmer amaranth are among the most troublesome and hard to control weeds in soybean fields in Kentucky. Both species have spread across the state over the past ten to fifteen years. Resistance to ALS-inhibiting herbicides [Group 2] and glyphosate [Group 9] is widespread in both species, while PPO-resistance [Group 14] is continually spreading especially in waterhemp. Herbicide manufacturers have developed several herbicide premix formulations targeted at controlling waterhemp and Palmer amaranth that contain multiple effective sites of action, thus farmers have options to choose from.
AGR-276: Kentucky Land Capability Classes and Limitations
John Grove, Brad Lee, Edwin Ritchey | Mar. 19, 2024 (New)
The USDA NRCS has established a national land classification system to help landowners and farm operators with land use planning. This system classifies land for agricultural purposes by the intensity with which it can be used for crop production and by the nature of the limiting problem. In general, the better the Land Class (lower numeric values), the less management is necessary to produce a crop while protecting the soil resource and the environment.
AGR-204: Soils and Fertility: Kentucky Master Gardener Manual Chapter 4
Brad Lee, Edwin Ritchey | Jan. 16, 2024 (Major Revision)
Soil is a mixture of weathered rock fragments (minerals) and organic matter at the earth's surface. It is biologically active - a home to countless microorganisms, invertebrates, and plant roots.
AGR-205: Weed Management: Kentucky Master Gardener Manual Chapter 8
J.D. Green | Jan. 16, 2024 (Major Revision)
Every garden has weeds, and every gardener wonders what to do about them. Gardening involves lots of small decisions that can have a cumulative effect on those weed problems.
