MU Extension State Specialist Kevin Bradley discusses the importance of controlling marestail, or horseweed, prior to soybean planting at the 2013 Mizzou Pest Management Field Day.

MU Extension State Specialist Kevin Bradley shares characteristics that can help distinguish between waterhemp and Palmer amaranth at the 2014 Mizzou Pest Management Field Day.

University of Missouri Extension State Specialist Kevin Bradley describes how little dicamba and 2,4-D are required to injury sensitive soybean at the 2014 Mizzou Pest Management Field Day.

MU Extension State Specialist Kevin Bradley presents burndown programs for difficult to control marestail, or horseweed, at the 2015 Mizzou Pest Management Field Day.

Mizzou Weed Science graduate student Blake Barlow discusses early-season soybean injury due to preemergent herbicides and how visible injury does not always translate to yield loss at the 2015 Mizzou Pest Management Field Day.

Mizzou Weed Science graduate student Cody Cornelius and MU Extension State Specialist Kevin Bradley discuss the impacts of herbicide carryover on cover crops and how environmental factors play a role at the 2015 Mizzou Pest Management Fi

Mizzou Weed Science graduate student Jaime Farmer discusses the role of waterfowl in transporting weed seed, specifically pigweed seed from one area and introducing it into another area at the 2015 Mizzou Pest Management Field Day.

Herbicide program and application timing are important for control of cover crop species.

At least 16 species of blackberries occur in Missouri. Once established, these plants can be difficult to control given the creeping underground rootstock.

Metsulfuron can be effective on many broadleaf and brush species.

Mizzou Weed Science graduate student Derek Whalen presents his research on the use of cover crops for weed suppression in this 2016 video he filmed for the North Central Weed Science Society of America’s annual meeting.

The uncertainty of spring weather and the increasing challenges of controlling marestail at planting are two reasons that fall herbicide applications can be beneficial.

MU Extension State Specialist Kevin Bradley and Senior Research Specialist Mandy Bish discuss good stewardship of pesticide applications with focus on dicamba and 2,4-D in this 2016 University of Missouri Extension Production.

Herbicide Injury ID aids in the diagnosis of herbicide injury. Search by visible plant symptoms, herbicide trade names, active ingredients, or herbicide site-of-action numbers.

Herbicide Injury ID aids in the diagnosis of herbicide injury. Search by visible plant symptoms, herbicide trade names, active ingredients, or herbicide site-of-action numbers.

ID Weeds allows you to search for weeds by their common or Latin name, view a list of weeds, or identify weeds based on characteristics. It presents weed details and photos.

ID Weeds allows you to search for weeds by their common or Latin name, view a list of weeds, or identify weeds based on characteristics. It presents weed details and photos.

Cattle prefer grass-based diets; however, they will consume other plants when grass is unavailable. This research evaluated effects of herbicide applications when forage ground cover was a mixture of tall fescue and legumes.

Cultural control methods are needed to help control herbicide-resistant pigweeds, such as waterhemp.