Division of Extension
Extension specialists and educators provide timely resources and information to help Wisconsin crop producers and their agricultural consultants manage crops efficiently and profitably.
Dr. Steven Hall, assistant professor and extension cropping systems and water quality specialist, explores how nitrate leaching responds to nitrogen inputs from both synthetic fertilizer and manure in Wisconsin cropping systems.
This article provides insight into various approaches to calculate and verify manure-nitrogen availability (N credits). We explore: 1) approaches used to calculate plant available N (PAN) from manure that can be used for planning N applications; 2) research methods used to develop “book values” or availability coefficients; 3) soil test indices that might help farmers determine manure N availability from a specific manure application.
Incorporating Off Farm Wastes in Nutrient Management Planning Summary Limiting Nutrient for Material Application Application restrictions near wells and/or buildings Application restrictions based on depth to ground water and bedrock Application restrictions near surface water Winter (frozen or snow covered ground) spreading restrictions Use of wood ash to adjust soil pH SnapPlus V3 Help and […]
This article provides guidance related to the importance of using the same lab to assess changes in soil health over time, in addition to the importance of sampling at a consistent time of year and depth when collecting samples for soil health evaluation.
In this video, Scott Reuss, regional crops educator, UW–Madison Extension, presents findings from multi-year research trials investigating optimal sulfur application rates for winter wheat in northeastern Wisconsin.
In this video, Dan H. Smith explores practical tips for calculating seed needs, managing storage conditions, and evaluating the economic value of straw and nutrient exports.
Explore 2024 Nitrogen Optimization Pilot Program activities, projects, and program details.
High soil pH does not have to derail your yield goals. With smart fertility planning, informed seed choices, and targeted nutrient management, Wisconsin farmers can manage high pH zones effectively.
An overview of the following soil health indicators: Soil Organic Matter (SOM), Soil Organic Carbon (SOC), Potentially Mineralizable Carbon (MinC), Permanganate Oxidizable Carbon (POXC), Total Nitrogen (TN), Potentially Mineralizable Nitrogen (PMN), Autoclaved Citrate Extractable (ACE) Protein, and Aggregate Stability (AS).
In this video, Hava Blair, researcher, UW–Madison Department of Soil and Environmental Sciences, presents an in-depth overview of the Wisconsin Phosphorus Index (P Index), a modeling tool used to estimate phosphorus runoff from agricultural fields to nearby surface waters.
In this video, Kelsey Hyland and Laura Paletta from UW–Madison Extension’s Ag Water Program explore phosphorus stratification in Wisconsin agricultural soils and its implications for water quality.
Chris Clark and Landon Baumgartner, UW–Madison Extension Nutrient and Pest Management Team, discuss why getting seed depth right is the key to achieving uniform emergence and strong roots.
