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Weed Management
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Updated: October 24, 2024
Iron-based Herbicides
An examination of the efficacy of iron-based herbicides. These selective, broadleaf herbicides contain the active ingredient chelated iron.
Updated: October 24, 2024
Agronomy News-August 2022
Agronomy News-August 2022, Volume 13, Issue 4. Topics in this issue are Small Grain Variety Trials, Palmer Amaranth Control in Organic Systems, Possible Changes to Atrazine Use, Japanese Stiltgrass Identification and Control, Sampling for Nematodes in Soybeans, Sprayer and Pesticide Twilight Meeting, Broiler Grower Settlements, New Rules for Processing Food Wastes and Residuals, Webinar: Solar On The Farm, Pasture and Grazing Workshops, Grain Market Report, Weather Outlook, and Regional Crop Reports.
Updated: October 24, 2024
Japanese Stiltgrass Identification and Management
Now is the time to scout pasture and hay fields for Japanese stiltgrass and take note of its locations. This invasive grass is typically seen in wooded areas, but unfortunately has been creeping into fields. Once the seed heads start to form in another month or two, you’ll want to have the mower ready.
Updated: October 24, 2024
Assessing Herbicide Options for Preplant Weed Control in Soybean
Starting clean, or weed-free, is a critical component of any weed management program. In 2022, growers experienced either a lack of or higher cost of glyphosate-based herbicides that are typically used to control weeds prior to planting soybean. In a study sponsored by the Maryland Soybean board and conducted at the University of Maryland’s Central Maryland and Wye Research and Education Centers, different glyphosate-based and non-glyphosate based herbicide treatments were evaluated for their ability to provide effective preplant weed control (Table 1). These treatments included both single and sequential herbicide applications.
Updated: October 24, 2024
Evaluating Late Season Burndown Options for Palmer Amaranth
A common question asked by farmers dealing with herbicide resistant Palmer amaranth is, “What are the most effective burndown options in situations where Palmer amaranth is larger then the ideal 3-4 inch control range?”
Updated: October 24, 2024
Assessing Options for Italian Ryegrass Control Prior to Soybean Planting
Italian ryegrass is a winter annual weed that often needs to be managed prior to soybean planting. In Maryland, populations of Italian ryegrass have been confirmed to be resistant to group 1 (Axial, Select) and group 2 (Harmony, PowerFlex) herbicides, but recent populations have appeared to develop resistance to glyphosate (Figure 1). With limited herbicide options, preplant control of Italian ryegrass will be challenging for growers.
Updated: October 24, 2024
Considerations for Burndown Programs in 2023
It’s that time of year when growers are considering which herbicides to include in their burndown programs. Utilizing effective herbicides will help to ensure less weed competition at planting. However, growers should consider not only what herbicides they plan to use in their burndown programs, but also the weed species present in the field.
Updated: October 24, 2024
Efficacy of Weed Management Tactics
This is a poster that provides the relative effectiveness of various integrated weed management tactics for summer annual crops. The chart helps identify the most effective tactics to manage weeds.
Updated: October 24, 2024
Invasives in Your Woodland: Canada Thistle
Canada Thistle is also known as creeping thistle, as well as green or perennial thistle, depending on the source. Others express their opinion about it by calling it hard thistle and cursed thistle. Canada thistle is an aggressive and colonial perennial, with both male and female plants. It is considered a noxious weed in Maryland and many other areas across the U.S.
Updated: October 24, 2024
New Ecological Mitigation Menus to Reduce Pesticide Runoff
New Ecological Mitigation Menus to Reduce Pesticide Runoff
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