Increasing nitrogen efficiency

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

As we move toward fall fertilization season and planning for spring 2012, the question of nitrogen (N) stabilizers comes up. Can we apply a material with our N fertilizer to protect it from loss? SDSU Extension Soils Specialist, Ron Gelderman and SDSU Extension Field Specialist, Mark Rosenberg address this question in the following article.

Timing and placement is key when applying additives

Nitrogen in the form of urea can be lost through ammonia volatilization when surface applied. Eventually all forms of nitrogen will convert to nitrate and are subject to leaching or denitrification losses. For growers to obtain a bigger bang for their applied N buck, different N materials and nitrogen additives may be used, but timing and placement is the key.

Nitrogen materials applied in the fall should be delayed until after soil temperatures are below 50 degrees. As of Oct. 16, soil temperatures at the 4-inch depth were still ranging from 51 to 57 degrees. In addition, N should be either incorporated with tillage or, with no-till, it should be injected into the soil. If this is not possible or practical, N applications should be delayed until late winter or early spring, and there is no snow cover. At these times conditions are usually cool and moist and do not favor ammonia volatilization.

If surface N applications need to be made later in the spring, a urease inhibitor should be considered with the application. For coarse textured soils in eastern South Dakota and medium textured soils in southeastern South Dakota, which have a profile full of water, growers should consider use of a nitrification inhibitor with spring N applications.

Effective urease and nitrification inhibitors are discussed in a new publication "Nitrogen Extenders and Additives for field crops" and can be found at

Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...

Comments (0) Leave a comment 

e-Mail (required)


characters left

Blend and Bulk Tower Systems

Waconia Towers provide speed, efficiency and reliability that only gravity-fed systems can offer. Towers are available with up to 300 ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form