"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.

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​​​​​Featured Articles

Title    PDF    URL    Differentiating 2,4-D and Dicamba Injury on Soybeans WS-56 / PPP-126 (Free PDF available) ATS and Burndown Herbicide Treatments ATS and Burndown Herbicide Treatments Factors Affecting Herbicide Carryover in 2018 Factors Affecting Herbicide Carryover in 2018 Precautions for Dicamba Use in Xtend Soybeans Dicamba Precautions Response of Roundup Ready Soybean yield to Dicamba Exposure Response of Roundup Ready Soybean yield to Dicamba Exposure Wet Weather Corn Weed Management Challenges Wet Weather Corn Weed Management Challenges Cressleaf Groundsel (Packera glabella) Cressleaf Groundsel (Packera glabella) Methods to Control "Volunteer" Corn in a Corn Replant Situation Failed Corn Stand Termination Spring Burndown Applications To Weeds and Cover Crops Spring Burndown Applications Poison Hemlock Poison Hemlock Liberty Link Quick Guide Liberty Link Quick Guide Late Burndown and Cleanup of Failed Burndowns Late Burndowns Terminating Cover Crops: Successful Annual Ryegrass Termination with Herbicides Ryegrass Termination PDF URL to Free Download of PDF Residual Herbicides and Fall Cover Crop Establishment Residual Herbicides and Fall Cover Crop Establishment Adjuvants Alone Won’t Solve Glyphosate Resistance Adjuvants Alone Won't Solve Glyphosate Resistance-PDF Giant Ragweed Should Be a Driver Weed For Many Indiana Farmers Giant Ragweed Driver Weed Wild Garlic Control in Indiana No-till Wild Garlic Control in Indiana No-till Star-of-Bethlehem Management Star of Bethlehem Management  Palmer Amaranth Time-Lapse, Late Growth YouTube Video: Late Palmer Growth Palmer Amaranth Time-Lapse, Early Growth YouTube Video: Early Palmer Growth Starting Next Year Now: The Utility of Fall Herbicide Applications Fall Herbicide Applications Soybean Seedling Injury Soybean Seedling Injury Postemergence Residual Corn Herbicides Corn Post Stages Newly Emerging Palmer Amaranth Newly Emerging Palmer Amaranth Spring Greenup Applications, Winter Annual Burndowns and Cover Crop Termination Greenup and Burndown Identifying Palmer Amaranth in The Field YouTube Video Palmer amaranth Seedling ID YouTube Video Take Action: Resistant Weeds Poster PDF Take Action: Herbicide Classification Chart PDF Stunted, Burned, and Crinkled Soybean Plants PDF Carrot Family Look-a-likes PDF Scout And Identify Pigweed Species Now PDF Control of Dandelion in No-till Corn and Soybean PDF Spring Burndown Applications to Weeds and Cover Crops PDF Palmer Amaranth Biology, Identification, and Management in Indiana PDF URL Palmer Amaranth Populations Confirmed in Indiana PDF Measure Pesticides Carefully: Why Overlooking This Step Affects Results, Safety, and Your Bottom Line PDF The Influence of Spray Water Quality on Herbicide Efficacy PDF Terminating Cover Crops: Successful Cover Crop Termination with Herbicides PDF Control of Marestail in No-till Soybeans PDF Waterhemp - an Emerging Weed Problem in Indiana PDF Glyphosate's Impact on Field Crop Production and Disease Development PDF HTML Glyphosate - Manganese Interactions and Impacts on Crop Production: The Controversy PDF

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