The Bulletin Archives - Page 46 of 79

Optimal Use of The Fusarium Head Blight Prediction Tool

May 9, 2018
Nathan Kleczewski

With the recent rain blast and rain forecast in the next week, coupled with the wheat crop starting to move into flowering within the next 7-14 days, it is important to start thinking about Fusarium head blight risk. I recently wrote an expanded article on the use of the FHB prediction tool that can be found by clicking here.
Some early flowering varieties will likely flower by the weekend. Most varieties are near flag leaf and will require another 7 –…

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Update on wheat in Illinois

May 4, 2018
Nathan Kleczewski

This past week we spent a few days surveying wheat fields throughout the state in order to see how the crop is progressing as well as better understand what disease related issues we may be experiencing. Most of the crop was near flag leaf emergence (Feekes growth stage 8/9) with a few fields near boot in locations further south. The good news is that of the 26 fields we looked at, none had any stripe rust,…

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University of Illinois Weed Science Field Research Tour

May 3, 2018
Aaron Hager

The weed science program at the University of Illinois invites all weed management practitioners to our annual weed science field tour, which will be held on Wednesday, June 27 at the Crop Sciences Research and Education Center (a.k.a. South Farm), located south of campus on Wright Street extended. Registration will begin at 8:00 a.m. and refreshments (coffee, juice, and doughnuts) will be available. Preregistration is not required, but please let us know in advance if you will be bringing a large group of participants so we can plan accordingly for meals.…

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When scouting soybeans, don’t just scout the foliage

May 3, 2018
Chelsea Harbach

The following is posted on behalf of Dr. Nathan Kleczewski, Field Crops Pathologist for Growmark. This content is from the Field Crop Disease Hub webpage Dr. Kleczewski curated.
Sudden death syndrome (SDS) is a disease of concern for soybean producers in Illinois and the surrounding region. The disease is caused by a soilborne fungus (Fusarium vilguliforme) that persists season to season in soybean residue and as resistant spores. Fields affected with SDS may have stand issues early in the season and develop interveinal chlorosis or necrosis (yellow or brown foliage with veins remaining green) after R3. …

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Insect Observations/Trap Data for the Week Ending 4/27/18

April 27, 2018
Kelly Estes

Spring insect activity is off to a slow start, but is expected to pick up with the recent warming trend.
Piatt, Madison, Montgomery, and Sangamon counties all recorded significant moth flights this week. Projected potential cutting dates are identified in the map below. Remember, these dates are just estimates, scouting should occur before and after the potential cutting dates.

True armyworm numbers have been very low. Armyworm traps are just getting going, so reports for this week are broken down into a general area of the state.…

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Black Cutworm Moth Flight Beginning

April 23, 2018
Kelly Estes

Soil temperatures and field activity are increasing along with moth migration from the south. Insect traps (figure 1) are out around the state and we’ve been capturing both true armyworm and black cutworm moths for over a week. In fact, we recently had our first significant black cutworm moth flights recorded in Montgomery and Champaign counties (figure 2). We expect activity to increase with both of these insects over the coming weeks. As both corn and soybean planting progress,…

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The 2018 small grains fungicide sheet is now available

April 20, 2018
Nathan Kleczewski

We have published the 2018 small grain fungicide recommendation guide. Please find a link to the guide and more information at the Illinois Field Crop Disease blog, which can be accessed by clicking here
Email alerts to new posts on the Illinois Field Crop Disease Blog can be found by subscribing for updates, which is located at the right side of the webpage.…

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Positive Signs after a Slow Start to Corn Planting

April 19, 2018
Emerson Nafziger

Parts of Illinois received some precipitation for the third Sunday in a row (starting with Easter) on April 15, and in a few places, also for the third Sunday in a row, it came partly in the form of snow. That streak should end this weekend, and less rain and warmer temperatures are predicted to move in for the rest of April.
Some ammonia went on late last week and there was planting activity in places,…

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Slug Management in Illinois Field Crops

April 19, 2018
Nick Seiter

Authors: Nick Seiter, Talon Becker, and Nathan Johanning
Slugs can be a difficult pest to manage when conditions are favorable for them, which has been the case often (particularly in southern Illinois) over the last couple of years. These mollusks can damage both corn and soybean early in the season, along with a variety of other crops; however, they have the potential to be especially problematic in soybean, where they can kill the cotyledons and ultimately reduce stands.…

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Cool season viruses in wheat

April 14, 2018
Chelsea Harbach

The following is posted on behalf of Dr. Nathan Kleczewski, Field Crops Pathologist for Growmark. This content is from the Field Crop Disease Hub webpage Dr. Kleczewski curated.
Currently, most small grains are approaching jointing or just past jointing in many parts of the state. Now is the time that you most likely will start to see early season viral diseases in some fields, specifically Wheat Soilborne Mosaic Virus and Wheat Spindle Streak Virus.…

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