Archive | 10th Technical Report (2003&2004)

Summary of the 14th and 15th years of WICST and related projects

Corn and Soybean Plant Population data from Arlington Research Station and Lakeland Ag Complex

Population data from both conventional and organic systems are shown with seeding rate and pre-harvest populations from 1992-2004 at Arlington and 1992-2000 at Lakeland. More »

Rotational Grazing with Dairy Heifers on WICST: Pasture and Heifer Productivity (1993-2004)

Whereas more and more of the milk stream is coming from large dairies with more than 1000 animal units (1 AU=1000 lb cow), managed (rotational) grazing is an increasingly important part of the landscape. In a recent study by PATS, researchers reported that managed grazing farms consistently generated more farm income and had lower [...] More »

Gross Margins of the WICST Cash-Grain Systems: 2003 and 2004

Profitability is one of the key factors that drive management decisions. Farming is no exception. Successful commodity farming, i.e. cash-grain production, is dependent upon producing and marketing large volumes of grain as efficiently as possible. Large acreage, large machinery, and large debts are all part of the business. However, growing interest in organic production [...] More »

The Grass Ley: An Alternative Forage System for Improved Manure Management

Wisconsin dairy farmers have limited opportunities to spread manure, due to seasonal weather conditions and existing cropping systems. Spring manure spreading is not ideal, since moist soil is more prone to compaction, and may delay corn planting and/or germination due to colder, wetter conditions. The typical crops grown by a dairy farmer (alfalfa and [...] More »

A Note on SOC, SON, and POM on WICST Plots

Soil organic matter is one of the most important attributes of a soil because it affects nutrient cycling, soil structure, and water availability. Maintaining, or better yet, increasing soil organic carbon (SOC) content is an important measure of the sustainability of a cropping system. In fact, the USDA has developed a Soil Conditioning Index (SCI) [...] More »

Soil Acidification Processes in Agroecosystems of WICST

Soil acidification associated with nitrogen inputs, both as acid-forming fertilizers and biological nitrogen fixation, has been noted in a variety of agroecosystems. Previously reported acidification rates range from 1.1 to 11.4 kmol ha–1 yr–1, largely associated with crop productivity and nitrate leaching losses. The objective of this research was to determine acidification rates at the [...] More »

Manure management on a township scale: Using a land evaluation approach in Wisconsin

Abstract In Wisconsin, increased attention to manure management means many farmers will need to look beyond their farm gate in order to correctly manage livestock manure. By integrating easily accessible information at the county level, and with local insight, a series of maps were developed to help land use planners and farmers envision manure management on [...] More »

Linking Farms: Reconnecting Dairy and Cash-Grain Farms through Shared Manure Management I. Production Results and Nutrient Budgets from 2003 and 2004

Current trends in the Wisconsin dairy sector show that average herd size is increasing, with a growing proportion of the milk stream produced on farms of 500 animal units (AU) or more (one animal unit = 1000 lbs animal live weight, WASS, 2004). In addition, these larger farms have higher stocking rates (PATS, 1997), [...] More »

Linking Farms: Reconnecting Dairy and Cash-Grain Farms through Shared Manure Management: II. Assessing Weed Pressure from Manure Applications on Corn Grain Fields

Due to higher stocking rates, suburban land development, and stricter nutrient management regulations, Wisconsin dairy farmers are looking beyond their own land for areas to spread manure. One possible alternative is to transport and apply manure to nearby, willing cash-grain farmers’ land. However, grain farmers have concerns that adding manure to their fields may increase [...] More »

Weed Seedbank Community Changes on the Wisconsin Integrated Cropping Systems Trial (WICST): 1992-2004

The goal of this study was to compare the effect of six different cropping systems over a 14-year period on: •Weed seed density; •The weed seed community; and, •To statistically test the hypothesis developed at the onset of the Wisconsin Cropping Systems Trial (WICST) at ARL UW- Research Station trial in 1990 Authors: H. Kümmel, J. Doll, J. Posner, [...] More »