Corn disease update and farewell

Last week, I visited all of the University of Illinois corn variety trials in the northern half of the state.  Gray leaf spot and northern leaf blight were beginning to appear in most of the locations, but were the most obvious at the trial located near Perry, IL (Pike County).

DSCN0119

“Young” lesions of northern leaf blight beginning to develop on a corn leaf.

DSCN0128

Gray leaf spot lesions developing on a corn leaf.

With the amount of rainfall received in the past few weeks, it is not surprising that these diseases were beginning to appear.  Since hybrids differ in their level of susceptibility to these diseases, not all hybrids in the trials had symptoms.  If the rainy conditions continue, then a foliar fungicide application sometime between tassel emergence and silking may need to be considered on hybrids that are the most susceptible.  Some general guidelines that may help make a foliar fungicide application decision follow:

  • On susceptible to moderately-susceptible hybrids:  consider a foliar fungicide if disease is present on the third leaf below the ear or higher on 50% of the plants prior to tasseling.
  • On intermediate hybrids:  consider a foliar fungicide if the field has a history of disease, if the previous crop was corn with at least 35% of the ground covered with residue, if disease is present on the third leaf below the ear or higher on 50% of the plants prior to tasseling, and if warm and humid weather has persisted.
  • On moderately-resistant to resistant hybrids:  foliar fungicides generally are not recommended, but scouting is important to confirm that diseases are not present.

The presence of diseases does make a difference in how profitable a fungicide application may or may not be.  From trials conducted at the University of Illinois from 2008 to 2014 at many environments (45 total environments) in Illinois, the results indicate that the overall yield response to foliar fungicides was 5.3 bushels/acre (see chart below).  However, this yield response was 9.5 bushels per acre when disease developed to affect at least 10% of the leaf area in untreated controls (in 17 of the environments).  In situations with low disease severity (disease developed to less than 10% of the leaf area in untreated controls), the average yield response was only 2.8 bushels per acre (in 28 of the environments).  Obviously, the marketing price of corn and the fungicide and application costs will determine if fungicide applications were profitable.  The chart below shows the profitability of fungicide applications under different yield response goals (3, 5, 8, and 11 bushels per acre).  The bottom line is that it takes a higher yield response to be profitable when corn marketing prices are lower.

Corn fung results 2014

Results from University of Illinois corn fungicide trials conducted from 2008 to 2014. All applications were made at tassel emergence (VT).

On a final note, my last day at the University of Illinois is today (June 30).  I will be moving to a similar position at the University of Kentucky, and will be based out of the Princeton Research and Education Center in the western part of Kentucky.  I want to thank the University of Illinois for my opportunities here and thank many of you for your support and interest.  There are no current plans to replace my position as Extension Plant Pathologist at the University of Illinois.  If you have field crop disease questions, the following contacts may be useful:

University of Illinois Plant Clinic

1102 S. Goodwin Ave.

Urbana, IL 61801

Tel: 217-333-0519

Email: plantclinic@illinois.edu

 

Commercial Agriculture Extension Educators:

Robert Bellm

Brownstown Agronomy Research Center

1588 IL 185

Brownstown, IL 62418

Tel: 618-427-3349

Email: rcbellm@illinois.edu

 

Dennis Bowman

Crop Sciences Research and Education Center

1102 S. Goodwin Ave.

Urbana, IL 61801

Tel: 217-244-0851

Email: ndbowman@illinois.edu

 

Russ Higgins

Northern Illinois Agronomy Research Center

14509 University Road

Shabbona, IL 60550

Tel: 815-824-2029

Email: rahiggin@illinois.edu

 

Angie Peltier

1000 North Main Street

PO Box 227

Monmouth, IL 61462

Tel: 309-734-5161

Email: apeltier@illinois.edu


Spring Cover Crop Field Day March 26th – Ewing Demonstration Center

Join us on Thursday, March 26th, 2015 for the  Spring Cover Crop Field Day at the University of Illinois Extension Ewing Demonstration Center.  Registration will start at 8:30 a.m. and the program will begin at 9:00 a.m., rain or shine.  The Ewing Demonstration Center is located at 16132 N. Ewing Rd; Ewing, IL 62836, on the north edge of the village of Ewing, north of the Ewing Grade School on north Ewing Road.  Watch for signs.

Cover crops have many benefits to the soil, environment, and overall crop production and management.  Topics covered during this field day program include:

Challenges of Grazing Lush Spring Forage

–          Travis Meteer, Extension Educator, U of I Extension

Techniques for Planting into Cover Crop Residue

–          Mike Plumer, Private Consultant

Understanding the Soil Profile Beneath Your Feet

–          Bryan Fitch, Resource Soil Scientist, NRCS

Which One to Choose? Cover Crop Species Selection and Demonstration Trial Tour

–          Nathan Johanning, Extension Educator, U of I Extension

Some of the program highlights will be the demonstration trial planting of cover crops, including 17 different cover crops and combinations illustrating first hand the characteristics of the cover crops and what benefits they bring to your soil and crop production system.  Also, (weather and soil conditions permitting) we will have a soil pit dug, exposing the soil profile, where NRCS Resource Soil Scientist, Bryan Fitch will lead us through the characteristics of our southern Illinois soils to enhance understanding of the importance of a healthy soil.  Also Certified Crop Advisor CEU credits will be available (2.0 Soil & Water Management & 1.0 Crop Management) for the program.

This field day will be free and open to anyone interested in learning more about cover crops.  A light lunch will be provided and this is a great way to talk to fellow growers to learn more from their challenges and successes incorporating cover crops into their cropping systems.  Please call the Franklin County Extension Office at 618-439-3178 for more information and to register by March 24th.  We hope to see you there!


Dates and Locations for the 2015 University of Illinois Corn & Soybean Classics

The dates and locations for the January 2015 University of Illinois Corn & Soybean Classics are set.  Our next series of meetings marks the 18th year of the Classics and will continue the program’s tradition of providing our clientele with the most current and timely information related to crop production, marketing and pest management.

The dates and meeting locations for the 2015 Corn & Soybean Classics are:

▸ January 7 (Wednesday): Peoria Par-A-Dice Hotel

▸ January 8 (Thursday): Moline i wireless Center

▸ January 9 (Friday): Malta Kishwaukee College

▸ January 12 (Monday): Springfield Crowne Plaza

▸ January 13 (Tuesday): Champaign I Hotel and Conference Center

▸ January 14 (Wednesday): Mt. Vernon Holiday Inn

Please mark your calendar and plan to join us at one of these locations.  We will provide additional information related to the program in a future issue of the Bulletin.

 


2014 Ewing Demonstration Center Fall Field Day

2014 Ewing Demonstration Center Fall Field Day

The University of Illinois Extension will host its annual Ewing Demonstration Center Fall Field Day on Thursday, September 11, 2014 at 9 a.m.  The Ewing Demonstration Center at is located at 16132 N. Ewing Rd; Ewing IL 62836, on the north edge of the village of Ewing, north of the Ewing Grade School on north Ewing Road.  Watch for signs.

The ongoing research plots this year consist of a soybean cover crops trial, LibertyLink soybean variety trial, insecticide/fungicide trial on soybeans, corn population study, drought tolerant corn hybrid evaluation, and new this year a pumpkin variety trial.

 

The topics to be discussed at Field Day include:

Fusarium Head Blight (Scab) and Vomitoxin Management in Wheat

  • Carl Bradley, Extension Specialist, Plant Pathology, University of Illinois Extension

Sky High Crop Scouting; Unmanned Aerial Drones

  • Dennis Bowman, Extension Educator, University of Illinois Extension

Alternative Forages and Harvesting Methods

  • Teresa Steckler, Extension Educator, Commercial Ag, University of Illinois Extension

Palmer Amaranth: Coming (Soon) to a Field Near You

  • Robert Bellm, Extension Educator, Commercial Ag, University of Illinois Extension

Cover Crops and Weed Management

  • Nathan Johanning, Extension Educator, Small Farms Local Foods, University of Illinois Extension

Refreshments will be provided by Franklin County Farm Bureau.

The field day is free and open to anyone interested.  A light lunch will be provided and registration is recommended by September 8, 2014 for an accurate meal count.

For additional information or to register, contact Marc Lamczyk at University of Illinois Extension Office in Franklin County at 618-439-3178 or lamczyk@illinois.edu.

 


2014 Field Day August 7 at Dixon Springs Ag Center

The 2014 Dixon Springs Agronomy and Horticulture Field Day presented by the University of Illinois, Department of Crop Sciences will be held on Thursday, August 7 at the Dixon Springs Ag Center.  The research center is located on IL Route 145, near Glendale, IL, 25 miles south of Harrisburg and 25 miles north of Paducah, KY.

Tours will start at 9:00 AM with the final bus leaving at 9:30. A lunch to follow will be provided by sponsors and UI Extension.

The following presenters will speak about current conditions and management challenges in field crop and horticulture production.

  • Carl Bradley: Fungicide Resistance
  • Angie Peltier: Corn Nematodes, The Hidden Menace in Your Fields
  • Jake Vossenkemper: Nitrogen on Soybeans
  • Rachel Cook: Tillage is Recreational, Fertilizer is Essential: A 44 Year Study
  • Jeff Kindhart: High Tunnels, Hydroponics and Mushrooms

For more information contact John Pike at 618-695-2441 or by email at jpike@illinois.edu


Brownstown Agronomy Research Center Field Day – August 6

The 2014 Brownstown Agronomy Research Center Field Day, presented by the University Of Illinois Department Of Crop Sciences, will be held on Wednesday, August 6. Extension researchers and specialists will address issues pertinent to the current growing season. The tour will start at 8 a.m. and will last about two and a half hours. It will be followed by lunch provided by U of I Extension.

Shaded tour wagons will take participants to each stop. These topics will be addressed:

  • N Fertilizer for Soybean:  Where’s the Yield? – Jake Vossenkemper, U of I
  • Tillage is Recreational, Fertilizer is Essential – Dr. Rachel Cook, SIU
  • Field Crop Diseases & Fungicide Treatments – Dr. Carl Bradley, U of I
  • Corn Nematodes:  the Hidden Menace in Your Fields – Dr. Angie Peltier, U of I
  • Factors Contributing to a Healthy Soil – Troy Fehrenbacher, NRCS

The 208-acre Brownstown Agronomy Research Center has been conducting crop research on the claypan soils of southern Illinois since 1937. More than 30 research and demonstration projects are conducted at the Center every year. Visitors are always welcome.

The research center is located south of Brownstown on IL Route 185, approximately 4 miles east of the IL Route 40 / 185 junction.

For more information, contact Robert Bellm (618-427-3349); rcbellm@illinois.edu
Visit us on the web at http://web.extension.illinois.edu/barc/


Bringing 2014 Crop Management Conference Presentations to Your Desktop

Each year the University of Illinois Extension’s Crop Management Conference series brings 13 hours of training to farmers, Certified Crop Advisors and other professionals working in agriculture. Extension personnel captured the audio from four different presentation during the 2014 Crop Management Conferences. Personnel in the Extension Web Development Team synced visual content with the captured audio to produce interactive online courses.

Three courses have been completed and one in still in development. Dr. Emerson Nafziger’s crop management presentations “Getting High Corn Yields in a Lower-Corn-Price World” and “Planning and Using Data from On-Farm Trials” and Dr. Mike Gray’s integrated pest management presentation, “Update on the Troublesome Injury to Bt Corn” are now available and Dr. Carl Bradley’s integrated pest management presentation, “Wheat Disease Identification & Management” will be available soon.

How to access the lessons. On the next rain-day, these and 11 courses covering soil and water management topics and two others covering integrated pest management topics are open for public viewing free of charge on the University of Illinois Extension CCA webpage.

Course topics are listed in a column along the right-hand side of the homepage under the heading, “Other Online Courses”, while topic descriptions are located below the text on the right (Figure).

When a person clicks on one of the topics, a small green window with the selected topic as a heading will pop up (Figure).

To view the course, click on the words, “Begin Course” under the topic heading (Figure).

CCAs looking for CEUs. To obtain continuing education units, Certified Crop Advisors must register, log-in, pay a small fee, view each slide in its entirety and complete a short quiz.


Northern Illinois Agronomy Research Center Agronomy Day, July 10th

The Northern Illinois Agronomy Research Center will be hosting its summer Agronomy Day on Thursday, July 10 in Shabbona. Join University of Illinois Extension specialists and researchers as they address issues pertinent to the 2014 crop growing season.

The program begins at 9:00 a.m. and will finish with a noon meal provided at no cost. It is open to all who wish to attend and there is no registration fee. Certified crop adviser continuing educational units will be available.

More than 45 individual research projects encompassing corn, soybean, oats and cover crops are under way. Current studies include evaluating crop rotations, date of planting, row spacing, plant populations, crop diseases, variety comparisons and crop nutrient management. Studies demonstrating herbicide and insecticide efficacy will be signed allowing visitors to evaluate their current or future pest management programs side by side.

Weather permitting; presentations will take place outside, next to research plots. Guests will be transported by tour wagons. Field topics include:

–        Nitrogen Fertilization for Soybean –  Dr. Emerson Nafziger, Professor and Extension Specialist, Crop Production

–        Corn Rootworm Resistance  and Product Efficacy –  Dr. Mike Gray, Professor and Extension Specialist, Entomology, and Assistant Dean for ANR Extension Programs

–        Fungicide Resistance – Dr. Carl Bradley, Associate Professor and Extension Specialist, Plant Pathology

–        Advances in Nozzle Technology – Matt Gill , Field Research Assistant

–        2014 Weed Control Challenges – Doug Maxwell, Principal Research Specialist, University of Illinois Department of Crop Sciences

–        Soybean Maturity, Planting Date, and Flowering Intensity Effects on Yield  –  Jake Vossenkemper, Graduate Research Assistant in Crop Sciences, University of Illinois

The 160-acre Northern Illinois Agronomy Research Center is located north of Shabbona and has been used for crop research since 1948. It is the northernmost research center within the University of Illinois Crop Sciences department that is dedicated primarily to row crop research. Visitors are always welcome.

The research center is located at 14509 University Road, about a half mile east of Shabbona on U.S. Route 30 then then 5 miles north on University Road. Perry Road, which runs from the Steward exit (#93) on I-39 to south of DeKalb, is a quarter mile north of the Center. For more information, contact Russ Higgins at 815-274-1343 or email rahiggin@illinois.edu.


Cover Crop Field Day March 28th at the Ewing Demonstration Center

Hearing a lot about cover crops lately but unsure if or how they will work for you? Then plan to attend the Cover Crop Field Day at the University of Illinois Extension Ewing Demonstration Center on March 28, 2014 starting at 10 AM.  The field day offers the latest information on cover crops uses – from livestock grazing, soil erosion and compaction reduction, increasing soil organic matter, to increasing future nutrient availability.

Topics for the tour include:

–          Cover Crop Termination, Mike Plumer, private consultant

–          Cover Crop Success and Failures, Panel Discussion

–          New Farm Bill, FSA Update, Bruce Morrison, Hamilton Co. FSA

–          Tour of Cover Crop Plots at EDC, Nathan Johanning, Extension Educator,  Small Farms and Local Foods.

The center is located  north of Ewing, IL (Ewing is about 20 minutes south of Mt. Vernon) on the North Ewing Rd. (watch for signs).  Ewing Demonstration Center started as a soil fertility experiment farm and has been in existence for over 100 years.

This program is free of charge and will start promptly at 10 AM, rain or shine, so dress appropriately.  A light lunch will be provided.  For questions or to register contact Marc Lamczyk U of I Extension, Franklin Co. at 439-3178.

 

Nathan R. Johanning

Extension Educator, Local Food Systems and Small Farms

University of Illinois Extension, Unit 26 serving Franklin, Jackson, Perry, Randolph, and Williamson Counties

402 Ava Rd.

Murphysboro, IL  62966

Phone:  (618)687-1727  Fax:  (618)687-1612

http://web.extension.illinois.edu/smallfarm/

 


The 2014 University of Illinois Corn & Soybean Classic

The 2014 University of Illinois Corn & Soybean Classic begins in two weeks!  Even though the pre-registration deadline has passed you still can register to attend by visiting the on-line registration site (http://www.cropsciconferences.com/Corn_Soybean/Registration/), or you may simply register on-site at the venue you attend.  The 2014 Classic will feature nine presentations made by speakers from the Illinois State Water Survey, USDA/ARS, Department of Natural Resources and Environmental Sciences, Department of Agricultural and Consumer Economics, and the Department of Crop Sciences.  You can see the entire program and read additional information about each topic and speaker by visiting http://www.cropsciconferences.com/program/9/

 

On behalf of my Classic colleagues, I wish each of you a safe and joyous holiday season.