Archive | 9th Technical Report (2001&2002)

Summary of the 12th and 13th years of WICST, the last report that includes the Lakeland Ag Complex site.

A Comparison of Low Input Systems on WICST

Marginal profits, increasing pest pressure, and concern for pollution hazard have resulted in increased interest in including small grains in corn-soybean rotations and using less inputs.  Data from the WICST trials show environmental advantages of using a chemical free three-phase system but yields were often lower than in the high input systems.  Researchers have [...] More »

WICST Soil test P and K at Depth - Lakeland Site

Starting in 1990, one treatment (phase) from each system was inititated.  By 1993, all phases of each system were up and running.  Soil cores were pulled from the surface to 3 feet into the profile every 7 years since the plot was entered into the trial. Data will be analyzed to determine in nutrient stratification [...] More »

WICST Soil Test P and K at Surface- Lakeland Site (1992-2002)

Yearly soil test P and K (ppm) from Lakeland site at 6″ depth.  Data is by phase and is averaged across 4 reps per year. More »

Identifying Value-Added Traits in Expanded Cropping Systems: An Update on Exploratory Trials

Research from the Wisconsin Integrated Cropping Systems Trial indicates that “expanded rotations” (longer than just corn-soybean) are important for the environmental sustainability of Wisconsin agriculture. Agronomic work is on going for the addition of small grains, hay, and canning crops to the common corn-soybean rotation. Many of these options are quite productive and [...] More »

Cover crop after wheat harvest for reduced N-leaching and increased forage production

The objective in this trial was to help transition from the small grain phase to the subsequent corn phase, including the addition of manure. The conflict is if manure is added, it is better to incorporate it, and if incorporated, the grower will loose the ground cover that is afforded by the wheat stubble. [...] More »

Winter Rye Following Corn Silage for Reduced N-leaching and Increased Forage Production

Objective was to measure the effect of rye cover crop following corn silage on subsequent forage yields and soil nitrates. Author: Jim Stute, Joshua Posner More »

Superimposed Manure Additions on WICST Plots at Lakeland Ag Complex

Manure additions were superimposed onto the existing WICST plots at LAC to measure environmental and production impact on the following corn phase. Authors: Jim Stute, Joshua Posner More »

Prairie Establishment on Prime Agricultural Soils

This project, initiated in 1999, had two objectives: 1) to learn how to reestablish prairie on rich agricultural soils; and 2) to establish a natural “check” for environment variables (e.g soil health variables, CO2 sequestration) in the heart of the core cropping systems trial. The experimental variables for prairie establishment were high and low [...] More »

Using Pre-Plant Nitrate Test to Reduce N Inputs on Corn: 11-Year History on the WICST Plots

Accurately predicting the nitrogen needs of corn can improve farmers’ profits and reduce nitrogen losses to the environment. In Wisconsin, it is a common practice to apply nitrogen for corn just prior to planting. The Preplant Nitrate Test (PPNT) was developed by Bundy et al (1995) to assess residual or “carryover” nitrate-N from the [...] More »

Crop Rotation Effecst in Soil Hydraulic Properties

Cropping systems and their attendant tillage regimens are studied at a wide range of space and time scales, from average crop yield of a field over a decade, to microbial diversity within a cm3 of soil at an instant in time. Study of soil hydraulic characteristics at a point in time and at [...] More »