Independent on-farm researcher Marion Calmer checks in from Alpha, Ill., with a preview of his 2024 National Strip-Tillage Conference presentation, “Did Strip-Till Solve My Nutrient Stratification Problems?”

Over the last 5 years, Calmer has been examining fertility levels vertically in his soil profile. This inch-by-inch examination uncovered a serious nutrient stratification problem on his farm that was costing him up to $135,000 annually. The No-Till Legend switched back to strip-till in 2023 for the first time since 1995 in an effort to solve his nutrient stratification problems.

During a general session presentation, Calmer will bring a new perspective on phosphorous (P) and potassium (K) application and share the latest data on the impact strip-till is having on his stratified soils. Plus, Univ. of Illinois strip-till research specialist Jared Fender will join Calmer on stage to help sort out his struggles with synchronizing strip location to crop rotation. 

Head to to download the program and reserve your spot for the conference, Aug. 8-9, in Madison, Wis.