Archive | Weeds

WICST has intensively studied weed seed and weed populations in the six cropping systems, and has determined that the relationship between weed seedbanks and weed pressure is not as simple as many believe. But after many years, trends have shown that grass weeds have increased in the organic grain system to a point of limiting yields. New management tools have been used to address the weed pressure

Cash Grain Cropping System Impact on Weed Populations Processes, 2002

One of the major concerns over reducing the chemical inputs to a cropping system is whether the new system is going to be able to control weed populations. Traditional methods in the study of the effect the cropping systems on weed populations introduce cropping systems over existing seedbanks in random fashion and take measurements of [...] 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 »

Weed Seed Bank Changes on WICST: 1990 to 1998

Crop management systems influence various aspects of the soil, not the least of which are weeds. The rotation, tillage system, intensity of herbicide use, and integration (or lack there of) of herbicides with other control practices will certainly affect the weed seed bank. While this principle is well recognized, seed bank data to [...] More »

1995 weed seed bank and biomass results

This report is a continuation of the weed seed bank sampling on WICST.  Samples were collected and then germinated in the greenhouse. Authors: Jerry Doll, Tom Mulder, and Joshua Posner More »

Finding the niche for mechanical weeding in corn

Concern about present levels of pesticide use has prompted many agriculturalists to reevaluate current practices and policies. Herbicides have been of particular concern due to detection in some surface and groundwater sources. In 1988, 60% of herbicide used in the U.S. was for corn weed control (Regnier and Jahnke, 1990). Water quality [...] More »

Best Management Practices for Corn Weed Control

Increased concern about the effects of pesticides in the environment and the desire to reduce purchased input costs are the driving forces behind reducing herbicide use. Field studies were done at two locations for two seasons to identify integrated weed management practices that are both effective and economical. The objectives of this research [...] More »