skip to Main Content

Conditions favorable for Fusarium head blight (scab) in southern Illinois

  • May 9, 2013

Wheat plants are now beginning to head out and flower in parts of southern Illinois. During this critical time of wheat development, wheat becomes susceptible to infection by Fusarium graminearum, the causal agent of Fusarium head blight (FHB; also known as scab) (Fig. 1).  This disease can cause reduced grain yield, test weight, and quality.  In addition, the fungus can produce toxins that will contaminate grain such as deoxynivalenol (DON; also known as vomitoxin). …

Read This Article

University of Illinois Weed Science Field Research Tour

  • May 7, 2013

We invite you to attend the 2013 University of Illinois Weed Science Field Day on Wednesday, June 26th at the University of Illinois Crop Sciences Research and Education Center, located immediately south of the main campus.  Coffee and refreshments will be available under the shade trees near the Seed House beginning at 8:00 a.m.
Similar to past years, we will car pool to the fields where participants can join in a guided (but informal) tour format. …

Read This Article

Determining How Much Nitrogen Is Present

  • May 6, 2013

Fall Nitrogen
With a still fresh memory of the drought conditions during last year, recent rains have reduced concerns over water availability for the start of the 2013 growing season, but at the same time, concerns over nitrogen (N) loss have increased. Nitrogen loss is difficult to predict because it depends in many factors such as time of N application, type of N source, soil type and temperature, and the amount of precipitation received. While it is difficult to know how much N is lost without a direct analysis of soil N,…

Read This Article

Wheat – foliar disease update and outlook

  • May 3, 2013

Symptoms of some foliar diseases of wheat are apparent in Illinois wheat fields, and the threat of other diseases is on the horizon. Current wheat diseases that have been observed in the state are Septoria and Stagonospora leaf blotch, Barley yellow dwarf, and other virus diseases.
Of these diseases, only the fungal leaf blotches (Septoria/Stagonospora) can be managed with foliar fungicides.  Although a flag leaf emergence timing for a foliar fungicide application may be recommended sometimes,…

Read This Article

Control Weeds before Planting

  • May 1, 2013

Wet soil conditions have caused delays in both planting and efforts to control existing weed vegetation.  Much of the existing weed growth is comprised of winter annual species, such as common chickweed, henbit, purple deadnettle, etc., but emergence of several summer annual species also has begun.  The growth of all species has accelerated with warmer temperatures and abundant soil moisture.  Several species of winter annuals are flowering and could produce viable seed before they are controlled with either tillage or herbicides. …

Read This Article

Corn Herbicide/Insecticide Precautions

  • April 25, 2013

A recent article published in this Bulletin by Dr. Mike Gray (“Soil Insecticide Use on Bt Corn Expected to Increase this Spring Across Much of Illinois”) provides insights and data that suggest the use of at-planting soil-insecticides in corn is likely to increase this season.  Many insecticide choices are available to farmers, but several of these could restrict the option to use certain corn herbicides.  Specifically, using an organophosphate (OP) insecticide at planting or after corn emergence could restrict the use of herbicides that inhibit either the ALS or HPPD enzymes. …

Read This Article

Herbicide Resistance: Are Soil-Applied Herbicides Immune?

  • April 16, 2013

The continual evolution of weed species and populations resistant to herbicides from one or more mechanism-of-action families represents one of the most daunting challenges faced by weed management practitioners.  Currently in Illinois, biotypes of 12 weed species have been confirmed resistant to one or more herbicide mechanisms of action.  Resistance to herbicides that inhibit the ALS enzyme is the most common type of resistance in Illinois.  Waterhemp has evolved resistance to more herbicide mechanisms of action than any other Illinois weed species,…

Read This Article

Applying Dicamba Prior to Planting

  • April 9, 2013

Dicamba is a growth regulator herbicide that can be used to control existing weed vegetation prior to crop planting.   Several commercially-available products contain dicamba, but not all products are specifically labeled for application prior to crop (especially soybean) planting.  Clarity may be applied before planting no-tillage corn at rates ranging from 8 (on coarse soils or medium- and fine-textured soils with less than 2.5% organic matter) to 16 (medium- and fine-textured soils containing 2.5% or greater organic matter) fluid ounces. …

Read This Article

Remain Aware of the Potential for Herbicide Carryover in 2013

  • April 8, 2013

Ideally, soil-residual herbicides should provide several weeks of weed control but not persist long enough in the soil environment to cause damage to rotational crops.  Dry soil conditions, similar to what most of Illinois experienced during the 2012 growing season, often slow the rate of herbicide degradation and increase the potential for damage to rotational crops from herbicide carryover.  Some remember the dry growing season of 1998 and the problems encountered in 1989 due to the persistence of one or more soil-residual herbicides that did not adequately degrade in the dry soil conditions of 1988. …

Read This Article

University of Illinois hosts International Agronomy Day

  • March 27, 2013

Agriculturists around the world are invited to engage in a global food production discussion during International Agronomy Day at the University of Illinois on August 26.
The U of I Department of Crop Sciences encourages producers from around the globe to participate in this unique forum bringing its nationally renowned faculty together to share the latest in agronomy, weed science, crop production, pest management, agricultural economics and more.
German Bollero, head of the Department of Crop Sciences,…

Read This Article
Back To Top