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Posts From Justin Calhoun

The R3/R4 Fungicide Application: Reconsidering the Practice from Large-plot Strip Trial Data

The R3/R4 Fungicide Application: Reconsidering the Practice from Large-plot Strip Trial Data Updated

🕔12:47, 12.Jun 2026

Once again we’ve reached mid-season in the soybean crop. Over the past several days there have been lots of calls seeking clarification regarding the R3/R4 foliar fungicide application in soybean. The current blog post presents data from non-replicated, large plot strip trials conducted between 2018 and 2023 to determine the response of soybean to foliar fungicide application made automatically.

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Soybean Nodulation Issues

Soybean Nodulation Issues Updated

🕔16:03, 9.Jun 2026

There have been a lot of phone calls and text messages over the past few weeks about lack of nodulation in soybean. Most likely, there are more issues this year with high soybean acres, many of which have historically been

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2026 Row Crop County Meetings

2026 Row Crop County Meetings Updated

🕔11:24, 2.Feb 2026

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2025 Soybean Variety Demonstration Results

2025 Soybean Variety Demonstration Results Updated

🕔10:02, 5.Dec 2025

We had an incredible year with the soybean variety demonstration program with 30 plus sites across the state. With this being my first year in the role of state soybean specialist, running this program was without a doubt the most

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2026 Suggested Soybean Varieties for Mississippi

2026 Suggested Soybean Varieties for Mississippi Updated

🕔15:18, 28.Oct 2025

After taking a year off, the soybean “short list” is back. Below are the 2026 Soybean Variety Suggestions developed through Mississippi State University variety testing programs. To build this list, we use harvest data from both the MSU Official Variety

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2025 Soybean Variety Response to Iron Deficiency Chlorosis

2025 Soybean Variety Response to Iron Deficiency Chlorosis Updated

🕔10:00, 28.Oct 2025

With all the other things going on during the 2025 soybean season, we also received a lot of calls and questions about iron deficiency chlorosis (IDC). If you’re not familiar, IDC occurs in Mississippi mainly in the Black Belt region

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MS Ag Industry Council – 2025 MAIC Row Crop Update

MS Ag Industry Council – 2025 MAIC Row Crop Update Updated

🕔16:37, 18.Jul 2025

We welcome you to attend the Row Crop Update at the 2025 Mississippi Agricultural Industry Council Annual Convention. This event is hosted at Perdido Beach Resort in Orange Beach, Alabama on Tuesday, July 22 starting at 8:00am.

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Replant Considerations in Soybean

Replant Considerations in Soybean Updated

🕔16:55, 13.May 2025

Wet weather has been the story of this growing season thus far across the state. Rain has delayed soybean planting in many areas, especially on heavier soils, and what has been planted has probably been affected at least in some

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