Alfalfa County Soil Data
Alfalfa County, Oklahoma
Avg pH
6.5
Texture
Water
Drainage
N/A
Organic Matter
1.3%
Hydrologic Group
D
Data Story
About Soil in Alfalfa County, Oklahoma
Neutral Soils in Alfalfa County
Alfalfa County sits right at the national neutral point with an average pH of 6.51. This is significantly less acidic than the state average of 6.06, providing an ideal chemical balance for many crops.
Sandy and Light Workable Mix
The mix features a high 49.9% sand content balanced by 30.5% silt and 13.8% clay. This creates a light, workable soil that permits easy root penetration but may lose nutrients quickly.
Moderate Fertility and Water Capacity
Organic matter measures 1.29%, falling below the state average of 1.72%. The available water capacity of 0.132 in/in is also lower than the Oklahoma benchmark, indicating a need for consistent irrigation.
Slow Infiltration and Runoff Risks
The county is classified in Hydrologic Group D, suggesting slow infiltration rates despite the sandy surface. While specific drainage class data is limited, Group D soils often require careful management during heavy storms.
Perfect for Grains in Zone 7a
Located in Zone 7a, this soil is perfect for winter wheat and its namesake, alfalfa. Gardeners can capitalize on the neutral pH by planting a wide variety of vegetables without needing to adjust acidity.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group D — High Runoff
Clay soils with very slow infiltration rates. Highest runoff potential. These soils have a permanent high water table or are shallow over impervious material.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Water
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Alfalfa County have?
Alfalfa County's soil is classified as Water. This indicates the relative proportions of sand, silt, and clay — 50% sand, 30% silt, and 14% clay. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Alfalfa County's soil acidic or alkaline?
Alfalfa County's soil has a pH of 6.5, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Alfalfa County?
Drainage class data is not currently available for Alfalfa County.
What crops or plants grow well in Alfalfa County's soil?
Based on Alfalfa County's Water texture, pH of 6.5, and drainage class, the soil is well suited for vegetables, grains, and most field crops.
What USDA soil order is found in Alfalfa County?
The dominant USDA soil order for Alfalfa County is not currently available in our dataset.
Planning your lawn? View lawn care data for Alfalfa County on LawnByCounty.com →
Other Counties in Oklahoma
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.