purdue weed science
"A weed is simply a misguided plant"
Weed Science is the study of vegetation management in agriculture, aquatics, horticulture, right-of-way, essentially anywhere plants need to be managed. It involves the study of all the tools available for this purpose such as cropping systems, herbicides, management techniques and seed genetics. However, it is not just the controlling of plants, but the study of these plants. This includes plant ecology, physiology, and the genetics of plants species that have been identified to have impact on the economy and our ecology.
At Purdue University Weed Science is not a department, but a discipline that can be found in two different departments: Botany & Plant Pathology and Horticulture and Landscape Architecture. These Departments have or have had faculty and staff that work in the realm of Weed Science or vegetation management. Because the discipline can be found in two different departments, expertise in specific areas of Weed Science was divided. This web page was built to cross the departmental bridge and bring the discipline and topic to one site. It was built to better serve the public and support the County Extension System.
Which Residual Herbicide Should I Use for Waterhemp Control in Soybeans?
Bill Johnson and Marcelo Zimmer One of the topics that we get many questions about is picking a residual herbicide for soybean production that helps with waterhemp control. This topic has even greater importance as we get closer to the 2022 growing season and the uncertainty about the supply of many of our commonly used…READ MORE
Does AMS Color Influence Weed Control with Glyphosate and Glufosinate?
Measuring Pesticides: Overlooked Steps to Getting the Correct Rate (PPP-96 – Rev 2020)
Differentiating 2,4-D and Dicamba Injury on Soybeans (WS-56 - May 2019)
ATS and Burndown Herbicide Treatments (Apr 2019)
A Quick Guide to Using LibertyLink Soybeans Effectively (Nov 2017)
Response of Roundup Ready Soybean Yield to Dicamba Exposure (Aug 2017)
Cressleaf Groundsel (May 2017)
Successful Annual Ryegrass Termination with Herbicides (WS-52-W – Dec 2015)
Residual Herbicides and Fall Cover Crop Establishment (Aug 2015)
Adjuvants Alone Won’t Solve Glyphosate Resistance (July 2015)
Wild Garlic Control in Indiana No-till (Apr 2015)
Star-of-Bethlehem Management (Apr 2015)
Starting Next Year Now: The Utility of Fall Herbicide Applications (Sep 2014)
Soybean Seedling Injury (May 2014)
Control of Marestail in No-till Soybeans (2014)
Palmer Amaranth Biology, Identification, and Management (WS-51-W – Nov 2013)
Control of Dandelion in No-till Corn and Soybean (May 2013)
The Influence of Spray Water Quality on Herbicide Efficacy (Mar 2012)
Weed Management in Pastures: Spiny Pigweed (WS-44-W – Mar 2011)
Weed Management in Pastures: Beefsteak Plant (Perilla Mint) (WS-43-W – Nov 2010)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Common Ragweed (GWC-14 – Jan 2010)
Guide to Toxic Plants in Forages (WS-37 – June 2008)
Diagnosing Herbicide Injury on Garden and Landscape Plants (ID-184-W – Mar 2008)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Waterhemp (GWC-13 – Nov 2007)
The Ancient Horsetail (WS-29-W – May 2007)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Common Lambsquarters (GWC-11 – May 2007)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Giant Ragweed (GWC-12 – Feb 2007)
The Glyphosate, Weeds, and Crops Series: Understanding Glyphosate to Increase Performance (GWC-2 – Dec 2006)
Facts About Glyphosate-Resistant Weeds (GWC-1 – Dec 2006)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Wild Buckwheat (GWC-10-W – Apr 2006)
The Glyphosate, Weeds, and Crops Series: Biology and Management of Horseweed (GWC-9-W – Apr 2006)
Dodder: A Parasite in the World of plants (WS-34-W – Feb 2006)
Kudzu in Indiana (WS-30-W – Sep 2005)
The Infamous Giant Hogweed (WS-32-W – Oct 2004)