Welcome to Purdue University

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.

For information regarding this web site and its content please contact Marcelo Zimmer or Bill Johnson.


​​​​​Featured Articles

Differentiating 2,4-D and Dicamba Injury on SoybeansWS-56 / PPP-126 (Free PDF available)
ATS and Burndown Herbicide TreatmentsATS and Burndown Herbicide Treatments
Factors Affecting Herbicide Carryover in 2018Factors Affecting Herbicide Carryover in 2018
Precautions for Dicamba Use in Xtend SoybeansDicamba Precautions
Response of Roundup Ready Soybean yield to Dicamba ExposureResponse of Roundup Ready Soybean yield to Dicamba Exposure
Wet Weather Corn Weed Management ChallengesWet Weather Corn Weed Management Challenges
Cressleaf Groundsel (Packera glabella)Cressleaf Groundsel (Packera glabella)
Methods to Control "Volunteer" Corn in a Corn Replant SituationFailed Corn Stand Termination
Spring Burndown Applications To Weeds and Cover CropsSpring Burndown Applications
Poison HemlockPoison Hemlock
Liberty Link Quick GuideLiberty Link Quick Guide
Late Burndown and Cleanup of Failed BurndownsLate Burndowns
Terminating Cover Crops: Successful Annual Ryegrass Termination with HerbicidesRyegrass Termination PDFURL to Free Download of PDF
Residual Herbicides and Fall Cover Crop EstablishmentResidual Herbicides and Fall Cover Crop Establishment
Adjuvants Alone Won’t Solve Glyphosate ResistanceAdjuvants Alone Won't Solve Glyphosate Resistance-PDF
Giant Ragweed Should Be a Driver Weed For Many Indiana FarmersGiant Ragweed Driver Weed
Wild Garlic Control in Indiana No-tillWild Garlic Control in Indiana No-till
Star-of-Bethlehem ManagementStar of Bethlehem Management
 Palmer Amaranth Time-Lapse, Late GrowthYouTube Video: Late Palmer Growth
Palmer Amaranth Time-Lapse, Early Growth YouTube Video: Early Palmer Growth
Starting Next Year Now: The Utility of Fall Herbicide ApplicationsFall Herbicide Applications
Soybean Seedling InjurySoybean Seedling Injury
Postemergence Residual Corn HerbicidesCorn Post Stages
Newly Emerging Palmer AmaranthNewly Emerging Palmer Amaranth
Spring Greenup Applications, Winter Annual Burndowns and Cover Crop TerminationGreenup and Burndown
Identifying Palmer Amaranth in The Field YouTube Video
Palmer amaranth Seedling IDYouTube Video
Take Action: Resistant Weeds PosterPDF
Take Action: Herbicide Classification ChartPDF
Stunted, Burned, and Crinkled Soybean PlantsPDF
Carrot Family Look-a-likesPDF
Scout And Identify Pigweed Species NowPDF
Control of Dandelion in No-till Corn and SoybeanPDF
Spring Burndown Applications to Weeds and Cover CropsPDF
Palmer Amaranth Biology, Identification, and Management in IndianaPDFURL
Palmer Amaranth Populations Confirmed in IndianaPDF
Measure Pesticides Carefully: Why Overlooking This Step Affects Results, Safety, and Your Bottom LinePDF
The Influence of Spray Water Quality on Herbicide EfficacyPDF
Terminating Cover Crops: Successful Cover Crop Termination with HerbicidesPDF
Control of Marestail in No-till SoybeansPDF
Waterhemp - an Emerging Weed Problem in IndianaPDF
Glyphosate's Impact on Field Crop Production and Disease Development PDFHTML
Glyphosate - Manganese Interactions and Impacts on Crop Production: The ControversyPDF


Weed Control Guide
Take Action Take Action: Herbicide Classification Chart

 Content Editor

More >>