Articles Archive
Displaying 1 - 10 of 18 items
Flooding and Freezing Effects on Wheat and Corn
By Chad Lee
Published
on Apr. 11, 2025
Articles in this newsletter address the rainfall totals received since the first of April and the expected nitrogen losses from those conditions. There are other concerns about how the wheat crop will recover from the excessive rains. The following are some expectations and assumptions. Be cautious with these.
A Soggy and Cool Start to Spring Planting 2025
By Matt Dixon
Published
on Apr. 11, 2025
Between relentless rainfall and subfreezing temperatures, the start of this growing season has been anything but ideal. According to data from the Ag Weather Center, Kentucky averaged 7.56 inches of rain last week.
After a Big Rain: N Loss, Erosion, and Other Things
By John Grove, Chris Teutsch, Edwin Ritchey, Brad Lee, and Glynn Beck
Published
on Apr. 11, 2025
As we write this article, it is still raining – towards an unknown but large amount of rainfall (Fig.1).
Early Planted Soybean Does Benefit from Good Soil Fertility
By John Grove
Published
on Mar. 30, 2025
I’ve been reading in both popular and scientific press that for soybean fields with low fertility, early planting substitutes for addition of needed soil-based nutrition (Allen, 2025, Loman et al., 2024).
Corn Nitrogen Rate Recommendations: AGR-1 Updates
By John Grove and Edwin Ritchey
Published
on Mar. 30, 2025
Corn fertilizer nitrogen (N) rate recommendations had not been deeply reexamined in 20 years. Additionally, there have been no substantial change to AGR-1 (Ritchey and McGrath, 2020) corn N management recommendations since the 2004-2005 version of the document. Information on the use of urease inhibitors was added at that time.
Corn Yield Contest Analysis: What Has Driven Yield in Last 6 Years?
By Mohammad Shamim and Chad Lee
Published
on Mar. 30, 2025
The Kentucky Corn Yield Contest is organized jointly by the University of Kentucky and the Kentucky Corn Growers Association. The yield contest can provide valuable insights into the highest-yielding corn fields across the state.
2025 Corn, Soybean, Wheat Fungicide Efficacy Guides Now Available
By Kiersten Wise and Carl Bradley
Published
on Mar. 30, 2025
The 2025 fungicide efficacy tables for foliar diseases of corn and soybean, and for soybean seedling diseases have been updated, and are now available through the Crop Protection Network website: https://cropprotectionnetwork.org/.
Grain Crop Phosphate and Potash Rate Recommendations: AGR-1 Updates
By John Grove and Edwin Ritchey
Published
on Mar. 30, 2025
Grain crop fertilizer phosphate (P2O5) and potash (K2O) maintenance rate recommendations in AGR-1 (Ritchey and McGrath, 2020) have not been reexamined since their inception - 1992. Other UK extension faculty (G. Schwab, pers. comm.; B. Lee, pers.
Historical Corn and Soybean Yield Improvement in Kentucky
By Dennis Egli
Published
on Mar. 24, 2025
It won’t be long before Kentucky farmers start planting the 2025 corn and soybean crops. At this time of the year, farmers are always optimistic, expecting record yields if the weather cooperates. This expectation is a result of the yield trends over the last nearly 100 years.
