x

AgProfessional Magazine

AgProfessional magazine is a monthly magazine that provides editorial and advertising for agronomic and business management solutions specifically to agricultural retailers/distributors, professional farm managers and crop consultants.

View Current Issue/Archives | Subscribe to the Magazine
AgProfessional Magazine
x

The latest news and information of specific interest to farm managers, crop consultants, ag retailers and the ag industry professionals serving them is delivered weekly on Monday in this e-newsletter.

View Current Issue | Subscribe Now | View Archives

News specific to inform, educate and assist ag retailers is delivered in this e-newsletter weekly each Thursday. Circulation is limited to only ag retailer/distributor management and employees.

View Current Issue | Subscribe Now | View Archives
Newsletters
Advertise on this site


Market Commentary

Closing Comment 05/16


Corn futures closed higher on Wednesday. Corn contract closed strong, reversing losses in overnight trade. Strong export demand for US corn lifted prices. Exporters reported sales of 900,000 tonnes of corn to China, of which an increase of 240,000 tonnes is reported as new sales for delivery in 2012/13. July is 22 3/4 cents higher at $6.20 and December is 11 3/4 cents higher at $5.26 1/4.
Market Info
Home > Resource Centers > Corn > Corn Nitrogen Rate Calculator Update

Corn Nitrogen Rate Calculator Update

April 20, 2011
Source: Iowa State University

The Corn Nitrogen Rate Calculator Web tool is a resource that aids nitrogen (N) rate decisions for corn production and is helpful in determining the effect of fertilizer and corn price on application rates. The method for calculating suggested N rates is based on a regional (Corn Belt) approach to N rate guidelines. Details on the approach are provided in the regional publication Concepts and Rationale for Regional Nitrogen Rate Guidelines for Corn. This approach and the Corn Nitrogen Rate Calculator are now being used by seven states across the Corn Belt: Iowa, Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin.

Nitrogen (N) Response Trials Added
The Iowa N response database in the calculator was recently updated, with response trials added from 2010 research. There are now 200 trials for corn following soybean and 101 trials for corn following corn. Being able to easily update the database with recent data is one of the many advantages to this dynamic database approach for corn N rate guidelines. Having new response trial data allows rapid updating with changing hybrid genetics, rotations and climatic conditions.

With the updated database, calculated N rates have increased slightly from previous years. The table below gives the N rate at the maximum return to N (MRTN) and the profitable N rate range from the updated calculator for several N:corn grain price ratios. You can work with any price of N and corn you wish when running the calculator. Output information includes the N rate at the MRTN, the profitable N rate range, the net return to N application, the percent of maximum yield, and the selected N fertilizer product rate and cost.



Resources for N Rate Decisions
The Corn Nitrogen Rate Calculator Web tool.

The regional publication Regional Nitrogen Rate Guidelines for Corn (PM 2015) can be ordered through any ISU Extension county office, from the ISU Extension Online Store at https://www.extension.iastate.edu/store, or by calling 515-294-5247. An electronic copy of the publication is available here.

The ISU Agronomy Extension Soil Fertility Web site 
 

Comments (0)

Leave a comment 
Name (required)
e-Mail (required)
Location (required)

Comment: