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Resources by Mark M. Alley

Title Available As Summary Date ID Author
Wheat Planted Without Fertilizer: Fall 2008 May 1, 2009 2812-1023
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 29, 2020 2908-1404 (SPES-264NP)
Virginia No-Till Fact Sheet Series Number Six - Nitrogen Fertilizer Sources and Properties Nov 16, 2018 2908-1405 (SPES-78NP)
Pop-up and/or Starter Fertilizers for Corn Nov 16, 2018 3002-1438 (SPES-77NP)
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 22, 2020 3011-1516 (SPES-265NP)
Growing Hulless Barley in the Mid-Atlantic Mar 20, 2019 424-022
Growing Bread Wheat in the Mid-Atlantic Region Mar 20, 2019 424-024
Nitrogen Management for Winter Wheat: Principles and Recommendations Mar 20, 2019 424-026(SPES-82P)
Nitrogen and Phosphorous Fertilization of Corn Mar 20, 2019 424-027
Successful No-Tillage Corn Production Mar 20, 2019 424-030
Successful No-Tillage Corn Production Mar 20, 2019 424-030
Corn Planting Dates in the Piedmont and Valley Regions of Virginia: How Early is Early?
Early-planted corn generally produces higher yields than later-planted corn due to improved utilization of sunlight during the long days of June and July, assuming moisture is adequate. Also, silage harvest can begin earlier and drying costs are reduced for grain corn; and earlier harvest enables growers to begin preparation for the fall seeding of small grain crops.
Mar 29, 2019 424-032
Corn Planting Dates in the Virginia Coastal Plain: How early is early? Feb 13, 2019 424-033
Fertilizer Types and Calculating Application Rates Aug 30, 2019 424-035
Deep Tillage Prior to No-Till Corn: Research and Recommendations Mar 29, 2019 424-053
Nitrogen Fertilization of Winter Barley: Principles and Recommendations Jan 24, 2019 424-801
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.
Aug 9, 2019 452-510 (SPES-158P)