Guidance for amending baseball infield soils to desired sand content using particle size analysis and precise depth calculations. A sample profile with 32.5% sand, 42.5% silt and 25% clay illustrates how to estimate and iteratively adjust sand additions to reach 50 or 60 percent sand in a 4 inch profile. The material also shows how to calculate 10 percent calcined clay, convert amendment depths into cubic yards and tons for standard infield dimensions, and complete final tilling, leveling, moistening and rolling steps for a blended, uniform surface.
- Starts with a Particle Size Analysis (PSA) and matching sampling and tillage depths to estimate how much sand is needed to reach 50 or 60 percent sand in the infield profile.
- Uses a sample soil (32.5% sand, 42.5% silt, 25% clay) and stepwise calculations with 0.7, 0.8, 0.9, 1.0 and 1.1 inches of added sand to approach target sand content.
- Details how to calculate 10 percent calcined clay in a 4 inch profile and convert amendment depths into cubic feet, cubic yards and tons for a 90′ base, 95-foot arc baseball infield.
- Outlines final preparation steps: till until soil is very loose without clay clods, blend sand evenly, level, moisten and roll, then optionally topdress additional calcined clay with a light nail drag.
