Resources by Mark M. Alley

Title Available As Summary Date ID Author
Virginia No-Till Fact Sheet Series Number Five - Understanding Ammonia Volatilization from Fertilizers
Loss of nitrogen (N) as ammonia gas (NH3) is known as volatilization. While volatilization directly from soil can occur, such loss is generally relatively small compared to the amount that can be lost from fertilizers. Volatilization losses can be significant with granular urea and urea-ammonium nitrate (UAN) sources, but the amount of loss varies greatly depending on placement of the fertilizer, soil pH, soil texture, and climatic conditions after application.
Sep 25, 2015 2908-1404(CSES-130NP)
Virginia No-Till Fact Sheet Series Number Six - Nitrogen Fertilizer Sources and Properties Aug 27, 2009 2908-1405
Pop-up and/or Starter Fertilizers for Corn Mar 8, 2010 3002-1438
Virginia No-Till Fact Sheet Series Number Two: Nitrogen Fertilizer Injection in No-Till Systems
Liquid nitrogen fertilizers have typically been surface applied. This method of application places the fertilizer where the urea nitrogen component of the solution is susceptible to volatilization losses.
Sep 25, 2015 3011-1516(CSES-131NP)
No-Tillage Small Grain Production in Virginia May 1, 2009 424-005
Growing Hulless Barley in the Mid-Atlantic May 1, 2009 424-022
Growing Bread Wheat in the Mid-Atlantic Region May 1, 2009 424-024
Nitrogen Management for Winter Wheat: Principles and Recommendations May 1, 2009 424-026
Nitrogen and Phosphorous Fertilization of Corn May 1, 2009 424-027
Successful No-Tillage Corn Production Jul 29, 2009 424-030
Corn Planting Dates in the Piedmont and Valley Regions of Virginia: How Early is Early? May 1, 2009 424-032
Corn Planting Dates in the Virginia Coastal Plain: How early is early? May 1, 2009 424-033
Fertilizer Types and Calculating Application Rates Aug 4, 2009 424-035
Deep Tillage Prior to No-Till Corn: Research and Recommendations May 1, 2009 424-053
Agronomy Handbook, 2000 May 1, 2009 424-100
Nitrogen Fertilization of Winter Barley: Principles and Recommendations May 1, 2009 424-801
Precision Farming: A Comprehensive Approach May 1, 2009 442-500
Precision Farming Tools: GPS Navigation May 1, 2009 442-501
Precision Farming Tools: Yield Monitor May 1, 2009 442-502
Precision Farming Tools: Global Positioning System (GPS) May 1, 2009 442-503
Precision Farming Tools: Variable-Rate Application Aug 1, 2011 442-505
Precision Farming Tools: Soil Electrical Conductivity May 1, 2009 442-508
Interpreting Yield Maps - "I gotta yield map - now what?" May 1, 2009 442-509
Sources of Lime for Acid Soils in Virginia
Acid soil limits crop yields on many Virginia farms. This soil acidity can be directly toxic to plants, but more often it reduces the plants' efficiency at nutrient utilization.
May 1, 2009 452-510