Evaluating Germination Patterns of Horseweed in the Mid-Atlantic Region
Sustainable Production
AgricultureCrop protectionHerbicide
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Matt Morris, University of Maryland
Co-Principal Investigators:
Mark VanGessel, University of Delaware
Project Code:
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

This research objective is to determine the timing of horseweed germination across various sites in the Mid-Atlantic region, to see if patterns are shifting. Seedlings emerge in all but winter months. Previous research found that most of the population emerged in the fall, and could be controlled then. However, farmer observations indicate more horseweed may be emerging in the spring. Understanding the current emergence period for horseweed will allow farmers to select the best burndown approach. Fall-emerging plants need to be controlled in fall or early spring. However, patterns have changed, either an effective residual herbicide should be recommend or the burndown should be delayed to late spring.

Key Benefactors:
farmers, agronomists, Extension agents

Information And Results
Final Project Results

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.