SoilDx Dashboard

All your SoilDx operations at a glance

Soil Diagnostics, Inc. News and Articles

Tag archives: fertisaverN

RSS feed of fertisaverN

Last update on .

Calculating Delta Yield is equal parts art and science
Calculating Delta Yield is equal parts art and science

If your soil is not likely to respond to added fertilizer, the question of "how much yield will you get if you add fertilizer" does not arise. However, if the probability calculated in the previous step suggests that added fertilizer will have some benefit, then we need to estimate how much benefit might we expect, in terms of additional bushels per acre. This additional production is called Delta Yield.

Last update on .

Response to added fertilizer is a function of N:C ratio as well as the water availability in the root zone.
Response to added fertilizer is a function of N:C ratio as well as the water availability in the root zone.

Microbes either uptake nitrogen when their environment is carbon rich in a process called immobilization, or release nitrogen in the form of plant-available nitrate (NO3- in the process of mineralization. The carbon to nitrogen ratio and the soil pH are important factors in this metabolic switch.

Last update on .

A screen capture from the MRTN calculator for Central IL showing no relationship between optimal corn yields and optimal fertilization rates.
A screen capture from the MRTN calculator for Central IL showing no relationship between optimal corn yields and optimal fertilization rates.

An economically optimum nitrogen rate (EONR) is a nitrogen rate that maximizes the returns on investments in nitrogen application. This rate depends on how responsive your soil is, how weather affected the growing season, current costs for various forms and applications of nitrogen and projected revenues from the yield. Calculating a true EONR prospectively is very difficult. However a simpler form of the EONR is often referenced in calculators like the Maximum Return to Nitrogen (MRTN).

Key takeaways

Making a recommendation for optimal nitrogen application to maximize profitability involves the following steps:

  1. Determining if your soil will respond to added nitrogen
  2. Estimating how much additional yield you could obtain from the soil
  3. Determining how much nitrogen is required for this additional yield
  4. Making corrections based on historic data, tillage and other relevant management practices

Last update on .

Making nitrogen rate recommendations requires several pieces of information, including historic yields, management practices, soil types and of course current soil tests. In this second part we look at the three key soil tests needed to make good recommendations.

Key takeaways

Three soil tests are important to make a good recommendation:

  • The FertiSaver-N test measures the amount of mineralizable nitrogen in the soil
  • The Loss on Ignition (LoI) test measures the amount of carbon in the soil
  • The pH test measures how conducive the soil is to optimal biological activity.

Last update on .

Protecting your private information is our priority. This Statement of Privacy applies to the http(s)://(www.)soildx.com; http(s)://(www.)soildiagnostics.com and Soil Diagnostics, Inc. and governs data collection and usage. For the purposes of this Privacy Policy, unless otherwise noted, all references to Soil Diagnostics, Inc. include http(s)://(www.)soildx.com; http(s)://(www.)soildiagnostics.com and Soil Diagnostics. The Soil Diagnostics website is a Soil Diagnostics, Inc. Equipment Control and Report Generation site. By using the Soil Diagnostics website, you consent to the data practices described in this statement. 

Last update on .

Agreement between user and https://www.soildx.com 

Welcome to https://www.soildx.com. The https://www.soildx.com website (the "Site") is comprised of various web pages operated by Soil Diagnostics, Inc. ("Soil Diagnostics"). https://www.soildx.com is offered to you conditioned on your acceptance without modification of the terms, conditions, and notices contained herein (the "Terms"). Your use of https://www.soildx.com constitutes your agreement to all such Terms. Please read these terms carefully, and keep a copy of them for your reference. 

Last update on .

Soil Diagnostics Inc's Kaustubh Bhalerao and University of Illinois Professor Richard Mulvaney were invited to a discussion on The 21st WILL Radio AM 580 program, a production of Illinois Public Media. Also on the show were Tim Smith (Cropsmith) and Dan Towery of Ag Conservation Solutions. The entire show is archived here. Our conversation begins at 24:00 minutes into the show.