Numbered Publications: AGR
AGR-256: Identification of Palmer Amaranth, Waterhemp and Other Pigweed Species
Travis Legleiter | Oct. 16, 2020 (New)
Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) are two species of the Amaranthus family that have enveloped the corn and soybean growing landscape of the United State over the past decade. Herbicide resistant Palmer amaranth first began infesting western Kentucky along the Mississippi and Ohio rivers in the early 2000's and has spread along the rivers and into the uplands over the last two decades. The introduction and spread of waterhemp had not been as widespread in Kentucky, although a rapid spread of waterhemp over the last 5 to 10 years has been noted especially in central Kentucky. Both Amaranthus species can be very difficult to control in soybean and corn due to herbicide resistance. The first step in effectively managing or controlling both species is to properly identify them when they first invade your fields. Early management decisions when Palmer amaranth and waterhemp first invade is key to long-term control.
AGR-258: Production of Connecticut Broadleaf Cigar Wrapper Tobacco in Kentucky and Tennesse
Andy Bailey, Bob Pearce | Sep. 29, 2020 (New)
There has been recent interest from tobacco dealers in purchasing Connecticut Broadleaf tobacco produced in Kentucky and Tennessee. Connecticut Broadleaf has traditionally been grown in areas of the Connecticut River Valley in Connecticut and Massachusetts. However, decreased production in this area along with increased demand for natural leaf cigar wrappers has caused tobacco dealers to pursue other tobacco-producing areas for this type. At first glance, Connecticut Broadleaf tobacco resembles dark air-cured tobacco, but generally has enhanced leaf quality characteristics that can increase its potential value for use as cigar binders and wrappers.
AGR-253: Identifying Freeze Damage in Wheat
Carrie Knott | Aug. 11, 2020 (New)
Wheat and other small grains can be damaged when air temperatures fall below certain thresholds for two or more continuous hours. These temperatures do not necessarily mean that damage will occur. Rather, these temperatures are general guidelines of when damage may occur. It is important that the crop be scouted to determine the extent of the damage, if any.
AGR-18: Grain, Forage, and Cover Crop Guide
Erin Haramoto, Jimmy Henning, Carrie Knott, Chad Lee, Ray Smith | Jul. 8, 2020 (Major Revision)
A quick resource on agronomic management of grain, forage, and cover crops.
AGR-18P: Grain, Forage, and Cover Crop Guide (poster)
Erin Haramoto, Jimmy Henning, Carrie Knott, Chad Lee, Ray Smith | Jul. 7, 2020 (Major Revision)
A quick resource on agronomic management of grain, forage, and cover crops. NOTE: This poster is 25 x 38 inches. AGR-18 is the booklet-sized version.
AGR-251: Quick Identification Tips for Turfgrasses Commonly Grown in Kentucky
Gregg Munshaw, Travis Shaddox | Jun. 19, 2020 (New)
Species of both warm- and cool-season turfgrasses are grown in Kentucky. Identification of these grasses is critical for implementation of proper management practices. Grass identification is commonly performed by observing specific parts of the plant. For a review of the parts of the grass plant, see AGR-216: 'Turfgrasses of Kentucky'. The objective of this extension publication is to provide concise identification tips to properly identify Kentucky turfgrasses.
AGR-249: Potassium for Kentucky Turfgrasses
Gregg Munshaw, Travis Shaddox | Feb. 14, 2020 (New)
Potassium (K) is an essential plant element and is the most abundant mineral, macro-nutrient in turfgrass after nitrogen (N). Sufficient concentrations of K are important to maximize turfgrass tolerance to stresses caused by temperature, drought, traffic, and salinity. Understanding the function, soil content, and fertilizer forms of K is essential to creating an efficient nutrient management program.
AGR-248: The Fate of Nitrogen Applied to Kentucky Turfgrass
Gregg Munshaw, Travis Shaddox | Feb. 14, 2020 (New)
The quality of Kentucky's surface and ground waters are of utmost importance to flora and fauna living in these waters. The growth of flora and fauna is directly related to the amount of available nutrients in these waters. In addition, we use these waters as the primary source of drinking water for ourselves and our families. A wide range of compounds may be found in these waters, the most common of which may be nitrate (NO3-). The sources of nitrogen (N) may include, but are not limited to, atmospheric deposition, septic tanks, effluent water disposal, agricultural fertilization, and landscape fertilization. The objective of this publication is to identify and describe the sources and potential fates of N applied to Kentucky turfgrass.
AGR-247: Manganese for Kentucky Turfgrasses
Gregg Munshaw, Travis Shaddox | Feb. 13, 2020 (New)
Manganese (Mn) is a common component of micronutrient packages applied to turfgrass and has been documented to result in increased greening of turfgrass. In order to effectively manage Mn applications, it is important to understand the function of Mn in turfgrass, the dynamics of Mn in the soil, and the various forms of Mn available for turfgrass applications.
AGR-245: Nitrogen for Kentucky Turfgrasses
Gregg Munshaw, Travis Shaddox | Feb. 13, 2020 (New)
Nitrogen (N) fertilizer is required by turfgrass in larger quantities than any other mineral nutrient because the plant demand for N is high and the supply of N from the natural environment is normally low. In instances where N is not applied according to the University of Kentucky recommendations, applied N can increase the risk of surface and ground water contamination. The objective of this document is to describe the function of N in turfgrass, explain how soil and tissue tests can be used to manage N applications, and to describe the various N fertilizer sources available for application to turfgrass.
