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Weeds
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Palmer amaranth confirmed in Stephenson County

Posted by Russel Higgins - Weeds

It is not quite time to close the chapter on the 2015 growing season in northern Illinois. A late season discovery of Palmer amaranth in a Stephenson county field should encourage area farmers to rethink weed management plans for 2016. After notification from an area agronomist, Stephenson County Extension staff collected and delivered amaranth samples to the lab of Dr. Patrick Tranel on the Un...

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Weeds Kub

Late season weeds

Posted by Russel Higgins - Weeds

This has been a challenging year to control weeds in corn and soybean fields in northern Illinois. In some fields early season rains prevented intended soil applied herbicides. Our wettest June on record compounded issues by delaying post applications. Drowned out areas in fields are now  populating with weeds including pigweed species, Giant ragweed and grasses. With much of the grain fill period...

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Giant ragweed control update

Posted by Russel Higgins - Weeds

In 2014 a northern Illinois agronomist reported that labeled glyphosate applications had failed to successfully control Giant ragweed (GRW) in a LaSalle County field. With the agronomists and growers cooperation an area of the field was left untreated and seed collected from the GRW at maturity. The seed sample was delivered to the University of Illinois Department of Crop Sciences and allowed...

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Crops are not the only things emerging in fields

Posted by Russel Higgins - Weeds

I encourage farmers to scout planted fields to evaluate crop stands, planter performance, and look for emergence issues. It is also an important time to evaluate the efficacy of pre-emergence herbicides. Waiting until we finish with soybean planting may leave fields with weeds that have already exceeded the size where they can successfully be controlled with post herbicide applications. Scoutin...

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Scouting weeds pre-harvest

Posted by Russel Higgins - Weeds

In a recent Bulletin article Dr. Aaron Hager, University of Illinois Weed specialist reminds farmers to be alert for amaranth or pigweed species in your fields. http://bulletin.ipm.illinois.edu/?p=2754 In his article Dr. Hager shared that identification of the various species becomes much more reliable when reproductive stru...

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Northern Illinois Palmer amaranth field day

Posted by Russel Higgins - Weeds

My commercial agriculture educator peers and I were planning a late growing season trip to Tennessee to learn how researchers are dealing with Palmer amaranth. The discovery of an established Palmer population in Kankakee County eliminated the need to travel. Instead, the Palmer came to us. Dr. Larry Steckel, Extension Weed Specialist from the University of Tennessee will be one of the speakers pr...

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July 10th Agronomy Day Program - Doug Maxwell

Weed resistance update from NIARC Agronomy Day

On July 10th at the NIARC Agronomy day, Doug Maxwell, principal research specialist from the University of Illinois Department of Crop Sciences shared weed control research underway at the research center. Attendees had the opportunity to view herbicide, herbicide combinations and programs effectiveness on the spectrum of northern Illinois weeds in both corn and soybean settings. A collection of p...

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Evaluating emergence

With most field work halted due to weather, it is an opportune time to visit emerged corn fields (you may need boots). Especially those that were planted in less than ideal conditions. What can we look for? Check emerged population, measure 1/1000 of an acre (17 feet 5 inches for 30 inch rows) and count corn seedlings. Look for variations in population...

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Weed resistance in northern Illinois

Posted by Russel Higgins - Weeds

It's never to early to start thinking about weed resistance and strategies to have in place if resistant populations are identified in your fields. While resistant populations of Palmer amaranth and Horseweed (Marestail) have garnered much of the attention in Illinois, another member of the pigweed family deserves attention. As part of a United Soybean Board funded project, growers submitted Wa...

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Early season weeds

Early season weeds

Posted by Russel Higgins - Weeds

For some who have been unable to till or burndown fields, the first flush of weeds are well established. Joining the winter annuals including Henbit, Chickweed, and Horseweed (Marestail) are the early emerging summer annuals including Lambsquarters and Giant ragweed. If you are interested in what weeds will germinate next, download the Weed Emergence Sequence document....

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Dr. Mike Gray
2014 Corn and Soybean Classic - Malta

Corn & Soybean Classic

The Corn and Soybean Classic moved through northern Illinois yesterday. This is the 17th year of the University of Illinois outreach program that brings agronomy and economic research from the University to the rest of the state. I was part of an audience of nearly 100 that garnered some interesting facts from the speakers. Here are just a few; Jim Angel...

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Visit with campus specialists

Posted by Russel Higgins - Weeds

Yesterday the commercial agriculture educators had the opportunity to visit with campus specialists to garner updates from the 2013 growing season. The information that most resonated with me was shared by Dr. Aaron Hager, Associate Professor of Weed Science at the University of Illinois. Northern Illinois has been dealing with its own set of problematic weeds in 2013 including Giant rag...

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Palmer amaranth update

On September 24th Dr. Aaron Hager penned a Palmer amaranth distribution update in the Illinois Bulletin. Dr. Hager shared that recent research conducted in Illinois by Dr. Adam Davis, USDA-ARS plant ecologist at the University of Illinois, demonstrated that there are few landscape-level barriers to the establishment of Palmer amaranth populations in Illinois, and that these populations, o...

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Palmer amaranth confirmed in Grundy County

Posted by Russel Higgins - Weeds

UPDATE - Palmer Amaranth in Illinois -   9/24/2013 http://bulletin.ipm.illinois.edu/?p=1689 Not news that I'm excited to share, Palmer amaranth has been confirmed in northern Illinois. Dr. Aaron Hager, associate professor and weed science specialist, shared that a plant tissue sample from Grundy County was s...

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Weed escapes, a sign of future issues?

Posted by Russel Higgins - Weeds

The 2013 planting season brought with it several challenges, for some that included the inability to spray a soil applied residual herbicide in their soybean. To limit or slow the spread of resistant weeds, university weed specialists have been recommending a two pass program including the use of a soil applied residual herbicide. While some northern Illinois fields still had acceptable control wi...

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Time to revisit fields

If you haven't already done so, this would be a great time to revisit your corn and soybean fields. Pollination is complete and a trip in the corn field should not result in being covered in pollen. What to look for in the fields? Starting with corn pollination success, pull several random ears and evaluate how well the field/hybrid pollinated.   ...

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Are the weeds dead?

Three tenths of an inch of rain over the weekend, putting the NIARC at .69 inches in July. Like many growers we are keeping a close eye on some over-sized weeds that were treated with post applications of herbicide. Experience has told us that weeds we thought were dead, actually were not! This is especially true when dealing with Giant ragweed. A busy day at the NIARC, Lisa Gonzini rated herbicid...

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A time for boots

Posted by Russel Higgins - Weeds

Starting on Friday, .47, 1.45, .31, .96, .36 (so far); measurable rainfall on five consecutive days totaling 3.55 inches with more in the forecast. Crops are struggling in saturated soils but evaluations go on at the NIARC. Lisa Gonzini had to break out the tall boots to evaluate her herbicide applications in the weed control plots. We are adding a Corn rootworm root rating component to...

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Horseweed issues moving north

Posted by Russel Higgins - Weeds

Be on the lookout for weeds surviving glyphosate applications in your soybean. Horseweed, commonly called marestail in Illinois, has long been an issue in southern Illinois and for no-tillers across the state. Glyphosate resistant populations have been identified and are the cause for considerable headaches for growers who deal with this problematic weed. It appears northern Illinois is not immune...

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What we have learned from weeds

Posted by Russel Higgins - Weeds

Harvest has begun at the NIARC, early planted soybean are being harvested to allow the planting of winter wheat, weather permitting we should keep on harvesting from this date on. As crops matured in northern Illinois and dropped leaves on corn and soybean plants prior to harvest, producers have the opportunity to visually evaluate the effectiveness of their herbicide program i...

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Giant ragweed trial

The most problematic weed at the NIARC (and much of northern Illinois) is Giant ragweed. Area farmer and NIARC advisory board member Ken Beck visited the center today and posed in front of a check (no herbicide) area at one of our trials. Look very closely to find the soybean under the towering ragweed! in addition to our traditional herbicide trials that deal with our population of Giant rag, we...

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Amaranth, oh my!

Posted by Russel Higgins - Weeds

This morning I had the opportunity to attend the Region II Illinois Soil and Water Conservation Districts meeting. I enjoyed visiting with regional representative Joe Bybee and many of the county representatives in attendance. One of the topics we discussed in relationship to cover crops was the looming weed issues in production agriculture in Illinois. For those who have attended meetings or f...

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Vince

Despite the year, the research continues

I expect few predicted the 2012 growing season. I had high expectations when trials went in the ground at the NIARC. Unfortunately, we have been reminded of the effect Mother Nature can have upon the livelihood of those involved in production agriculture. With precipitation she can be generous or not, and unless you invest in irrigation there is little one can do. There have been many suggestio...

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Francis Childs Lite

Posted by Russel Higgins - Corn Weeds

One research project at the NIARC has been dubbed "Francis Childs Lite", a nod to the Iowa farmer who set a world record for corn yield of 442 bushels in 2002. Our study is comparing tillage systems, N-rate, fungicides, and fertility systems. Dave Lindgren side-dressed 32% in that experiment today. Also today we planted soybean in our date of planting study. This is our final scheduled planting fo...

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Rainy morning, active afternoon

Posted by Russel Higgins - Weeds

Light rain in the morning did little to dampen activities at the NIARC, by mid morning we were able to apply post herbicides on V4 corn, and soil samples were collected from one of the entomology studies. The most colorful activity of the day was accomplished by Vince Filiceti, a researcher for Dr. Adam Davis. Vince had the task of marking locations for future weeds to be planted in a continuation...

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