Stephanie Porter
Outreach Agronomist
309-660-5302
stephanie.porter@ilsoy.org

Stephanie Porter
Outreach Agronomist
309-660-5302
stephanie.porter@ilsoy.org

STEPHANIE PORTER UPDATES

Region 4
09/05/2023, Montgomery
Stephanie Porter

After the recent heat, it appears that most crops have turned quickly over night. Early April planted corn is almost to black layer and early April plants soybeans are turning. Harvest will be here soon. Be sure to check corn stalk quality to know which fields to harvest first.

 
Region 4
08/25/2023, Montgomery
Stephanie Porter

It was a hot one and the early planted/earlier maturity corn and soybeans are starting to turn quickly. Corn is 1/2 to 3/4 milk line depending on maturity. Thus, far grainfill seems to be just fine, but would really like some rain to finish out the season. Many have started to watch out for stalk rot to know which corn fields to harvest first. Cercospora leaf blight started to show up in soybeans.

 
Region 4
08/09/2023, Montgomery
Stephanie Porter

Corn and soybeans are approaching the R5 growth stage. As I type this, we are finally getting a significant amount of rain. Dryer weather, hybrid resistance, and fungicide have kept diseases like gray leaf spot and tar spot at bay in corn. But Goss’ wilt and Northern Corn Leaf blight have just started to show up. Soybeans are loving the rain and could have potential to yield if diseases stay away. One plant was found that had stem canker.

 
Region 4
07/27/2023, Montgomery
Stephanie Porter

It was a good sign to see that the corn canopy was collecting as much sunlight as possible with little sunlight hitting the ground. We can’t complain, but would love more rain for corn grainfill. The insecticide application eliminated Japanese beetles and most disease. If you visit field edges where fungicide coverage was a scarce, you will find tar spot on lower leaf and gray leaf spot moving up the plant. Soybeans are hanging in there with no more insect pressure thanks to a recent insecticide application. Septoria brown spot is in the lower canopy.

 
Region 5
07/20/2023, Shelby
Stephanie Porter

Abigail Peterson unfortunately found red crown rot when scouting one of here cover crop side by side trials. I went there to investigate further and it is coming to light that this disease may have spread across Shelby County. We also found it in one field in Macon County.

 
Region 4
07/20/2023, Montgomery
Stephanie Porter

Corn pollination is complete. The cracks in the ground have me hoping for rain soon for grainfill. I unfortunately found that spot for the first time on our farm on a few lower leaves. We will continue to scout to see if the disease progresses and if the fungicide application holds. No report on our soybeans this week, but instead I headed to scout soybeans in Shelby Co.

 
Region 4
07/13/2023, Montgomery
Stephanie Porter

Corn is almost fully pollinated and recently had a fungicide/insecticide application. Soybeans have just reached R3 and Septoria brown spot is showing up in lower leaves. It’s almost getting dry again and we will need moisture for corn grainfill. High smoke in the air.

 
Region 4
07/05/2023, Montgomery
Stephanie Porter

Corn pollination is taking place. Soybeans will be approaching R3 (pod set) soon. Both corn and soybeans will be at the correct growth stage for fungicide and insecticide in about a week. There appears to be a lot of waterhemp escapes. Also saw minor corn snap and lodging.

 
Region 3
06/14/2023, Iroquois
Stephanie Porter

This field has now shown yellowing or K deficiency in large areas for this year and two years ago in corn. Very, dry which only enhances the K deficiency symptoms. No other fields in the area showing symptoms. No spring N was applied at or near planting. We plan to investigate further.

 
Region 4
06/10/2023, Montgomery
Stephanie Porter

Corn will reach tassel in 1 to 2 weeks. Soybeans will reach R3 in 1 to 2 weeks. Japanese beetles are moving in on field edges. Post herbicide applications have taken place in soybeans.