Comparing Extractants in Estimating Potassium Availability

In an article recently published in the Soil Science Society of America Journal, researchers report on soil health indicator changes during the transition from four years of tilled organic row crops through three years of grass–legume sod, with or without two composted manure applications during row cropping. Soil physical health indicators bulk density and aggregation, chemical indicators organic matter and bioavailable phosphorus, and sod biomass were measured during the three-year transition.