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Updated: September 26, 2022
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: September 26, 2022
Thoughts on the Control of Palmer Amaranth in Organic Systems
An article on the control of Palmer amaranth in organic systems that will discuss the biology, Palmer amaranth weaknesses, management considerations, early detection, and elimination, managing populations in organic systems, considering cultural techniques/growing practices that are less conducive to palmer amaranth, strategic tillage, cultivation, and crop rotation/fallowing.
Updated: September 26, 2022
Minimizing Combine Weed-Seed Movement
Harvest is fast approaching for grain producers; some of which have already begun shelling corn in recent days. Though this time of year often marks the end of the season, some decisions we make at harvest have lasting effects on subsequent growing seasons; one of which is weed control. If weeds are allowed to mature and set-seed, harvest equipment can be highly effective at retaining, and transporting weed seeds from field to field, as well as dispersing weed seeds across the field, further increasing the weed seed bank.
Updated: August 10, 2022
Roots in Research - Yield of 2020 - CMREC - Upper Marlboro
Take a look at the research happening here at the Central Maryland Research and Education Center in Upper Marlboro (CMREC-UM). Even though we are one of the smallest Research and Education Centers (RECs) in the State, our scope of research is quite vast. Here at CMREC-UM you will find research on agronomy, cover crops, forestry, horticulture, irrigation, livestock, water quality and more.
Updated: August 9, 2022
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: July 27, 2022
Roots in Research 2019
Roots in Research - Yield of 2019 - Upper Marlboro CMREC
Updated: May 9, 2022
Branching Out - Winter 2022
Read some "parting thoughts" from Extension Forester Jonathan Kays prior to his retirement. Our regular features include the "Woodland Wildlife Spotlight," "Invasives in Your Woodland," plus the events calendar, the Brain Tickler challenge, and the News and Notes section.
Updated: January 21, 2022
Common Groundsel: Identification and Management in Nursery and Landscape Settings
Common Groundsel: Identification and Management in Nursery and Landscape Settings
Updated: November 15, 2021
Options for Postemergence Common Ragweed Control in Enlist E3 Soybean
In Maryland, populations of common ragweed have developed resistance to three herbicide groups, Group 9 (glyphosate), Group 2 (FirstRate, Synchrony), and Group 14 (Flexstar, Valor). These herbicide-resistant populations limit options for effective postemergence control. Even though alternative herbicides are available, control can be inconsistent when applied to common ragweed plants exceeding 4” tall (Figure 1).
Updated: September 3, 2021
Time to Pull Palmer Amaranth
Lately, I have seen several fields with Palmer amaranth flowers (Figure 1). It is imperative that these plants be managed before harvest (Palmer amaranth is listed as a noxious weed in Maryland and Delaware). At this point, mowing or herbicides will not improve yield nor prevent Palmer from germinating next year. Plants need to be physically removed from fields. Palmer amaranth has both male and female flowers on separate plants (Figure 2), and focus should be placed on removing the seed-producing females first. A single female can produce approximately 600,000 seeds per plant, and these seeds can remain viable for six years. Palmer seed matures within 2 weeks of flowering and if left unchecked, a single plant can infest an entire field within a few years (Figure 3).
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