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Mark Reiter

Title Summary Date ID Author(s)
2016 Mid-Atlantic Commercial Vegetable Production Recommendations Jan 29, 2016 456-420 (AREC-168NP)
Corn Fertility Update – Spring 2010 Jun 11, 2010 3006-1448
Enhanced Efficiency Fertilizer Materials: Nitrogen Stabilizers Aug 22, 2013 CSES-52P
Increasing Fresh Produce Availability From Local Sources Jul 19, 2013 AREC-50NP
Nitrogen Management for White Potato Production

One of the challenges of white potato production, as with any crop, is the efficient management of nitrogen
(N) fertilizer. Excessive N fertilizer applied at or before tuberization can extend the vegetative growth period and delay tuber development, resulting in a lower tuber yield. However, too much N applied later in the season can delay maturity of the tubers, reducing
yield and adversely affecting tuber quality and skin set. Conversely, under-application of N at any point in the season can result in lower tuber yields and reduced profits. Environmental considerations must also be taken into account in N fertilizer management. Nitrogen
is a mobile nutrient in the soil and any excess N has the potential to move off-site via leaching or surface runoff. This is particularly true on the coarse-textured, low-organic matter soils common to the Eastern Shore, the premier potato-producing region in Virginia. These factors make the appropriate N rate and N application timing critical for successful white potato production.

Sep 28, 2009 438-012
Nitrogen and Sulfur Leaching Potential in Virginia Jun 19, 2015 CSES-125NP
Pop-up and/or Starter Fertilizers for Corn Mar 8, 2010 3002-1438
Proceedings of the 31st Southern Conservation Agricultural Systems Conference

Data from the Conservation Technology Information Center’s (CTIC) National Crop Residue Management Survey was used to establish trend lines for Virginia agricultural commodities. In 2007, double crop soybeans had the highest use of conservation tillage at 95.6% while 100% of potatoes were planted using conventional tillage. Most Virginia producers are integrating conservation tillage into their cropping systems, but vegetable crops have challenges that make adoption more difficult. Higher value vegetable and specialty crops are the last frontier for conquering the widespread use of conventional tillage and should be the main focus of research and Extension education programs to implement reduced and conservation tillage when systematically feasible.

Dec 3, 2009 2910-1417
Sensor-Based, Variable-Rate Nitrogen Applications in Virginia

Variable-rate applications (VRA) of nitrogen (N) fertilizers are a new option to assist producers with real-time fertilizer rate decisions. Two commercially available systems that allow variable-rate nitrogen applications are GreenSeeker (Trimble Navigation Limited; www. ntechindustries.com/greenseeker-home.html) and the OptRx Crop Sensor (Ag Leader Technology; www. agleader.com/products/directcommand/optrx/). A discussion of the science behind these systems, potential economic benefits, and other methodologies to make VRA is discussed in Virginia Cooperative Extension publication 442-505, “Precision Farming Tools: Variable-Rate Application” (Grisso et al. 2011). 

Aug 8, 2014 CSES-90P
Southeastern U.S. 2016 Vegetable Crop Handbook Feb 17, 2016 AREC-66NP (AREC-169NP)
The Nutrient Value of Straw Jun 19, 2015 CSES-126NP
Troubleshooting The Soybean Crop Nov 16, 2012 AREC-25NP
Virginia Cotton Production Guide 2014 Feb 7, 2014 AREC-62NP
Virginia Cotton Production Guide 2016

Proper soil fertility management ensures sufficient nutrients for maximum cotton production. Obtaining and maintaining appropriate soil nutrient concentrations is imperative, as fertilizer inputs are the largest component of production budgets for Virginia cotton farmers. At the same time, excessive nutrient application wastes money, wastes natural resources, and can negatively impact yields and environmental quality.

Feb 22, 2016 AREC-124NP (AREC-165NP)
Yellow Corn in Virginia – Spring 2016

Many of the corn fields on the Eastern Shore and in Eastern Virginia are “yellow” and stunted due to the weather this Spring  and is similar to conditions that Virginia farmers experienced in Spring 2010. There are many reasons for the corn to be yellow that range from nutrient deficiencies to abiotic factors.

Oct 10, 2016 CSES-171NP