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Volunteers Needed to Evaluate Corn Fertilization

Recent yields for corn over 500 bu/ac in Georgia and Virginia have some questioning whether or not the current North Carolina fertilization recommendations are limiting yield since both of these states have similar soils and climate as North Carolina. Corn producers are needed to assist in this evaluation. A summary of the effort is provided below.

Who: Drs. Jeff White, Ron Heiniger, and Gail Wilkerson, NCSU Dept. of Crop & Soil Sciences will lead the project. Funding is provided by North Carolina Corn Growers Association.

What: This study will add value to the NC Yield Contest by studying soil nutrient levels and agronomic practices that produce high corn yield. Statistical analysis and existing sufficiency standards and assessment will explore relationships among nutrients, yield, management, and environment, with the aim of improving fertility management.

Why: Do insufficient nutrients become limiting at high yield, especially with irrigation? The world-record 500+ bu/ac in GA and VA leave little doubt that our yield potential is similarly high, but is it being constrained by insufficient nutrients? Are current NCDA&CS fertilizer recommendations adequate for today’s high-yielding cultivars and management?

When: 2017 and 2018

How: Soil and tissue will be sampled at four growth stages and samples submitted to the NCDA & CS Agronomic Division for analysis. Fees and reimbursement of shipping will be reimbursed. Yield data will be provided using grower equipment as outlined within the NC Corn Yield Contest Rules & Regulations. Participating growers will enter this contest in 2017 and in 2018.


If interested, or for more information, contact your local NC State Extension office. (County Center locations can be found by selecting “County Centers” at the top of this web page.)