skip to Main Content

Weed Management on Prevented Planting Acres

  • May 29, 2019

Persistent wet field conditions have increased the likelihood that many farmers will opt to take the prevented planting option through their crop insurance policy.  Even though no crop will be planted, weed control practices still should be implemented to reduce seed production from summer annual weed species.  Any weed seed produced in 2019 will add to future weed control costs.  The old weed science adage “One year’s seedling equals seven years weeding” reinforces the need to adequately manage weeds on prevented planting acres.…

Read This Article

Weed Management Reminders in a Wet Spring

  • May 17, 2019

Much of the vegetation visible from the road is comprised of winter annual species, including the now obvious yellow-flowered species cressleaf groundsel (a.k.a. butterweed) and yellow rocket.  Some summer annual weed species, including common lambsquarters, smartweeds giant ragweed and waterhemp, also have begun to emerge.  When field conditions become conducive for planting, several possible scenarios exist for the management of existing weed vegetation.  One possible scenario is that planting will occur before any type of weed management program (tillage or herbicide application) is implemented to control existing vegetation. …

Read This Article

Considerations for dicamba application restrictions

  • May 6, 2019

On March 1, 2019 the Illinois Department of Agriculture (IDOA) announced it will require Special Local Needs labels (referred to as 24(c) labels) during the 2019 growing season for the four commercial dicamba-containing products labeled for use in dicamba-resistant soybean varieties.  The Special Local Needs labels include five elements, one of which is a June 30 application deadline.  IDOA recognizes the importance of this technology to Illinois soybean growers and is taking this proactive step to reduce the instances of damage to dicot plant species (including sensitive soybean,…

Read This Article

Waterhemp Resistance to Group 15 Herbicides

  • March 15, 2019

The continual evolution of weed species and populations resistant to herbicides from one or more site-of-action groups represents one of the most daunting challenges facing weed management practitioners.  Waterhemp has evolved resistance to herbicides from more site-of-action groups than any other Illinois weed species, including resistance to inhibitors of acetolactate synthase (ALS), photosystem II (PSII), protoporphyrinogen oxidase (PPO), enolpyruvyl shikimate-3-phosphate synthase (EPSPS), hydroxyphenyl pyruvate dioxygenase (HPPD), and synthetic auxins.  The University of Illinois weed science program recently announced confirmation of waterhemp populations resistant to Group 15 herbicides (Table 1),…

Read This Article

IDOA ANNOUNCES STATE-SPECIFIC RESTRICTIONS ON USE OF HERBICIDE DICAMBA ON SOYBEANS FOR 2019

  • March 1, 2019

Goal to reduce off-target movement of dicamba products
SPRINGFIELD, IL – The Illinois Department of Agriculture (IDOA) announced today it will require Special Local Needs labels, including new restrictions, for the use of the herbicide dicamba on soybeans in Illinois for the 2019 growing season. Dicamba is primarily used on soybeans to control post-emergence broadleaf weeds.
On February 15, IDOA notified the manufacturers of the three dicamba-containing products approved for over-the-top application to dicamba-tolerant (DT) soybeans that additional application restrictions will be required for the 2019 growing season.…

Read This Article

Dicamba Buffers, Training and Licensing: What to Know for 2019

  • December 17, 2018

The United States Environmental Protection Agency (EPA) renewed the labels of three dicamba-containing products used in dicamba-resistant soybean varieties on October 31, 2018.  These renewed labels also contain new restrictions and requirements that did not appear on the original labels.  Each application must completely satisfy all label requirements and restrictions, but the following three new requirements might necessitate additional forethought and planning.
Additional in-field buffers
Fields that exist in counties that might harbor endangered terrestrial dicot plant species must have an in-field,…

Read This Article

Precautions for Dicamba use in Xtend Soybean

  • November 13, 2018

The extension weed science programs at The Ohio State University, Purdue University, and the University of Illinois recently collaborated to revise suggestions and precautions for use of dicamba in dicamba-resistant soybean.  The United States Environmental Protection Agency renewed labels of Xtendimax, Engenia, and FeXapan last October, and this updated extension weed science publication offers additional suggestions to help further reduce off-target dicamba movement.
Dicamba Precautions_2018 Update

Read This Article

Looking for Palmer amaranth Populations

  • August 27, 2018

The weed science programs at Southern Illinois University and the University of Illinois are participating in a research project sponsored by the United Soybean Board to survey and monitor the potential for the evolution of weeds with resistance to glufosinate and dicamba.  Early detection of evolved resistance to these herbicides could alert soybean farmers of the imposing threat in time for changes in management strategies that avoid herbicide failures.  Researchers in Illinois will collect seed from at least two of our most challenging weed species,…

Read This Article

Ewing Demonstration Center Celebrates 50 years of Continuous No-till Research at Agronomy Field Day on July 26

  • July 12, 2018

The University of Illinois Extension will host the Ewing Demonstration Center Agronomy Field Day on Thursday, July 26, 2018 at 9 a.m.  Every growing season presents challenges to production, and this year is no exception!  We are happy to host this summer field day to share with local growers current, ongoing agronomy research in southern Illinois, including cover crop trials on corn and soybeans, nitrogen management in corn, weed management in soybean, and our continuous no-till field,…

Read This Article

Reminder…University of Illinois Weed Science Field Research Tour

  • June 11, 2018

We would like to take this opportunity to once again extend the invitation to attend the 2018 University of Illinois Weed Science Field Day, to be held Wednesday, June 27th at the University of Illinois Crop Sciences Research and Education Center, located immediately south of the main campus on South Wright Street.  Coffee and refreshments will be available under the shade trees near the Seed House beginning at 8:00 a.m.  The tour will provide ample opportunity to look at research plots and interact with weed science faculty,…

Read This Article
Back To Top