U2U Decision Support Tools - Corn Split Nitrogen Application

Welcome to the Corn Split N decision support tool.

This product is designed to help farmers and farm advisors understand the risks and benefits of using post-planting nitrogen (N) application for corn production. The Corn Split N tool combines historical weather and fieldwork data with economic considerations to determine the feasibility and profitability of completing a second (split) N application within a user-specified time period. This tool may help you with decisions that:
  • Increase corn yields
  • Reduce nitrogen costs
  • Reduce nitrogen losses to the environment
  • Affect the likelihood of completing in season fieldwork
With the Corn Split N tool you can quantify the costs and benefits of post-planting nitrogen applications for your farming operation to help your bottom line and the environment.
To get started, click on any location within the gray area of the map or use the search feature.
x
Tool Tips:
  • Use white user location icon ( ) in upper right hand corner of map to zoom to current location of computer being used.
  • Use the layer icon ( ) in the upper right hand corner of the map to control your viewing options.
  • Tested with browsers: Internet Explorer 11 & later; FireFox 27.0 & later; Chrome 33.0 & later; Safari 6.1.6 & later.
This tab allows you to customize inputs for your farm and view summarized results.
Location: Bureau Co., Illinois; Region: 1
Yield penalty for not getting post-planting N applied: bu/acre
Yield benefit from post-planting N application: bu/acre
Reduced N applied due to post-planting N application: lbs/acre
Yield penalties/benefits and reduced N usage are critical inputs. The provided default values should be adjusted with help from Univ. Extension specialists or crop consultants to ensure accuracy for your soil and climatic conditions. More info
Nitrogen Price ($/lb):$/lb Corn Price ($/bu):$/bu
Sidedress Cost ($/acre):$/acre
Implement width (ft):
Implement speed (mph):
Field efficiency:
Acres worked per hour: 16.4
Acres:
Calculated hours needed: 91.7
Hours in field per day:
13
Days worked in 7:
Days in selected period: 21
Average days suitable in period: 11.2
Average hours suitable in period: 167
Economic Analysis using Field Work Days Data from the last n Years.
ScenariosAcresUnits/acreDollars/unitTotal Dollars
Input Acres Completed
Additional cost of post-planting fertilizer application0000
Yield loss due to unfertilized acres0000
Yield gain due to post-planting fertilization0000
Nitrogen saved (lb) due to post-planting fertilization0000
Net Benefit of Post-planting N application on n acres0
Average Scenario
Additional cost of post-planting fertilizer application0000
Yield loss due to unfertilized acres0000
Yield gain due to post-planting fertilization0000
Nitrogen saved (lb) due to post-planting fertilization0000
Average Net Benefit of Post-planting N application on n acres0
Worst Case Scenario
Additional cost of post-planting fertilizer application0000
Yield loss due to unfertilized acres0000
Yield gain due to post-planting fertilization0000
Nitrogen saved (lb) due to post-planting fertilization0000
Worst Case Net Benefit of Post-planting N application on n acres0
Best/Max Case Scenario
Up to nnnn acres of post-planting N application completed in 1 year out of 33 years, or 3% of years
Breakeven Scenario
Number of acres (out of nnnn acres) requiring post-planting N application to breakeven
Note: This information is educational and should not be the sole source of information used to make a management decision.
Total Dollars are rounded to nearest thousand.
Summary of Acres Completed using 33 years of Field Work Days History
Acres Completed if Start on xxxx and End on These Dates
Completion Percentileendweek-1endweekendweek+1endweek+2
500000
600000
700000
800000
850000
900000
950000
Note: Percentiles are based on USDA Crop Progress & Condition Reports for each Crop Reporting District (CRD). Actual field work days are determined by weather, soil texture and drainage. Each point in the figure to the right is a single year for the selected CRD.
Crop Calendar Summary
Corn StageEstimated GDD to reach StageEstimated Date of StageOccurs within this range for all years (1981 - 2014)
V2368Jun 06-
V4536Jun 14-
V6704Jun 21-
V8872Jun 28-
V101040Jul 05-
Note: post-planting application using ground vehicles for application should be completed by V10.

Disclaimer on the Use of Data and Products from the HPRCC


Climate products and tools are developed by the HPRCC and its partner Regional Climate Centers to provide users with a means to routinely access recent weather and climate data. While applied research has demonstrated that the use of such data in decision making can reduce risk and lower a user's cost, it must be pointed out that near-real-time data are preliminary in nature and sometimes contain errors. Although care is taken to remove known errors, it is possible that some data will change after receipt of written records and final quality control steps. Users are therefore forewarned to consider any negative impact that errant data might have on their business and use preliminary data and information at their own risk.


The HPRCC is not responsible for the misuse or abuse of data provided through our services, both online and full-service.


Through use of the data services through the HPRCC website, you atuomatically agree to the terms of use and disclaimer.