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.

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AGR-16: Taking Soil Test Samples

Lloyd Murdock, Greg Schwab, Frank Sikora, Bill Thom | Mar. 13, 2023 (Revised)

The most important part of making fertilizer recommendations is collecting a good, representative soil sample. Soil test results and fertilizer recommendations are based solely on the few ounces of soil submitted to the laboratory for analysis. These few ounces can represent several million pounds of soil in the field. If this sample does not reflect actual soil conditions, the results can be misleading and lead to costly over- or under-fertilization. It is necessary to make sure that the soil sample sent to the laboratory accurately represents the area sampled.

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ID-163: Agricultural Lime Recommendations Based on Lime Quality

David Ditsch, Josh McGrath, Lloyd Murdock, Edwin Ritchey, Frank Sikora | Mar. 13, 2023 (Revised)

Soil acidity is one of the most important soil factors affecting crop growth and ultimately, yield and profitability. It is determined by measuring the soil pH, which is a measure of the amount of hydrogen ions in the soil solution. As soil acidity increases, the soil pH decreases. Soils tend to be naturally acidic in areas where rainfall is sufficient to cause substantial leaching of basic ions (such as calcium and magnesium), which are replaced by hydrogen ions. Most soils in Kentucky are naturally acidic because of our abundant rainfall.

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ID-125: A Comprehensive Guide to Wheat Management in Kentucky

Bill Bruening, J.D. Green, John Grove, Jim Herbek, Don Hershman, Doug Johnson, Chad Lee, Jim Martin, Sam McNeill, Michael Montross, Lloyd Murdock, Doug Overhults, Greg Schwab, Lee Townsend, Dick Trimble, Dave Sanford | Feb. 23, 2016 (Reprinted)

The soft red winter wheat grown in Kentucky is the fourth most valuable cash crop in the state. Winter wheat has been an integral part of crop rotation for Kentucky farmers. Wheat is normally harvested in June in Kentucky and provides an important source of cash flow during the summer months.

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AGR-210: Fertilizer Management in Alfalfa

David Ditsch, Lloyd Murdock, Edwin Ritchey, Greg Schwab | Jan. 8, 2014 (New)

Alfalfa is a high quality, valuable forage crop that can be successfully produced on most well-drained soils in Kentucky for hay, silage, and grazing. Fertilizing alfalfa can be uniquely challenging because it is a high-yielding crop that removes a tremendous amount of soil nutrients when compared to other crops grown in Kentucky. A thorough understanding of alfalfa's growth habits, nutrient requirements, and soil nutrient supply mechanisms is necessary to effectively manage fertilizer inputs and maximize profitability while minimizing environmental impact.

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SR-107: Sensor Technology for Variable Rate Nitrogen Applications on Wheat in Kentucky: Recommendations and Verification

Dottie Call, John James, Lloyd Murdock, Ole Wendroth | Oct. 28, 2013 (New)

Nitrogen (N) applications on wheat using sensor-based technology can improve both N use efficiency and yields.

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PR-657: Soybean Management Verification Program, 2012

Jim Herbek, Chad Lee, Amanda Martin, Lloyd Murdock | Mar. 29, 2013 (New)

The 2012 Soybean Management Verification Program (SoyMVP) enrolled 19 fields across Western Kentucky, providing ten direct comparisons between University of Kentucky recommendations and producers practices for soybean production. All fields were scouted weekly and recommendations were made on the university portion of the field based on established thresholds and observations from agronomic research. The objective of these comparisons is to validate university research and identify areas for more research.

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PR-639: Soybean Management Verification Program, 2011

Jim Herbek, Chad Lee, Amanda Martin, Lloyd Murdock | Feb. 24, 2012 (New)

The goal of SoyMVP is to verify applied research at the University of Kentucky and to identify whether University of Kentucky recommendations are adequate.

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ID-193: Profitability of Nitrogen Applications for Stockpiling Tall Fescue Pastures: 2011 Guide

Kenny Burdine, Greg Halich, John Johns, Lloyd Murdock, Ray Smith | Oct. 5, 2011 (New)

The concept of stockpiling is pretty straightforward, but the challenge each year is to determine the likelihood that this practice will be profitable given the economic and agronomic conditions present at mid-summer. This practice can yield significant benefits, but it also carries significant costs. These benefits and costs must be quantified and compared to assess the overall profitability of the practice.

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PR-622: Soybean Management Verification Program, 2010

Jim Herbek, Chad Lee, Lloyd Murdock, Jason Sarver, Greg Schwab | Apr. 6, 2011 (New)

The 2010 Soybean Management Verification Program (SoyMVP) consisted of 16 fields across western Kentucky which were split to give seven direct comparisons between University of Kentucky recommendations and producer practices for soybean production.