AGR-253: Identifying Freeze Damage in Wheat

Carrie Knott | August 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 | July 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 | July 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 | June 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 | February 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 | February 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-245: Nitrogen for Kentucky Turfgrasses

Gregg Munshaw, Travis Shaddox | February 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.

AGR-247: Manganese for Kentucky Turfgrasses

Gregg Munshaw, Travis Shaddox | February 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-246: Iron for Kentucky Turfgrasses

Gregg Munshaw, Travis Shaddox | December 20, 2019 (New)

Iron (Fe) is commonly applied using granular or foliar sources to enhance turfgrass color. Iron applications can result in darker green turfgrass as a result of increased Fe uptake or Fe oxidation on the leaf surface. In many cases, Fe results in no turfgrass response at all. Understanding the dynamics of Fe both in the plant and in the soil can enhance your nutrient management programs. The objective of this publication is to explain the function of Fe within the plant, describe the Fe sources available for turfgrasses, and identify which Fe fertilizers are most effective.

AGR-242: Calcium for Kentucky Turfgrasses

Gregg Munshaw, Travis Shaddox | December 19, 2019 (New)

Calcium (Ca) is the dominant cation in all soils of agronomic importance and Kentucky soils are no different. Kentucky soils are naturally high in Ca. Consequently, Ca deficiency in Kentucky turfgrasses is extremely rare, and the probability of observing a Ca response on golf courses, home lawns, sod production, or sports fields is very low. Applying Ca fertilizers to artificially increase soil Ca above the level necessary for proper plant growth normally does not result in an increase in plant uptake because Ca uptake is genetically controlled. Regardless, Ca is commonly applied in both granular and liquid forms.