44 Environmental Geoscience (Posters)

Wednesday, 11 March 2026
9:00 AM - 12:00 PM
RCC, Lower Level Hall

Analysis of No-till Agriculture's Effect on Soil Quality Through the Growing Season, Fayette County, Iowa

Paper number: 44-2
Program: Technical Sessions
Time: 9:00 AM – 9:00 AM

Authors

Abstract

This study analyzes soil quality in southwest Fayette County, Iowa, within the Iowan Surface landform. Soil collected between fields using till and no-till agricultural methods has exhibited differences in major nutrient ions (Nitrogen, Phosphorus, Potassium) levels in Kenyon series soils. Samples taken from O and A horizons, approximately 5 inches deep, and selected based on field proximity and soil similarities. This research was selected to address the regional shift towards more sustainable agriculture and a gap in knowledge regarding soil composition and change over a single growing season. The tested fields are located in northeast Iowa, containing Kenyon series soils, an area characterized by thick, rich, loamy topsoil, primarily used for corn and soybean production. Soil collection and analysis through XRF and wet chemistry testing resulted in data pointing to a decrease in ion concentration variation throughout the agricultural season in soils not disturbed by tillage. Based on these results, landowners may benefit from exploring no-till agriculture as a sustainable alternative to full tillage and a way to preserve needed minerals throughout the growing season.

Geological Society of America Abstracts with Programs. Vol. 58, No. 1

doi: 10.1130/abs/2026SE-411567

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