Stone County Soil Data
Stone County, Arkansas
Avg pH
5.5
Texture
Sandy loam
Drainage
Well drained
Organic Matter
11.4%
Hydrologic Group
B
Data Story
About Soil in Stone County, Arkansas
Acidic Ultisols of the Ozark Plateau
Stone County's dominant soils are Ultisols, which are highly weathered and naturally acidic. At a pH of 5.53, the soil aligns closely with the Arkansas state average but remains well below the national median of 6.5.
Sandy Loam Textures for Fast Drainage
With a composition of 43.3% sand and 28.3% silt, the dominant sandy loam texture allows for easy tilling and aeration. The low 14.5% clay content helps prevent waterlogging, making it a favorite for gardeners who prefer lighter soils.
State-Leading Organic Matter Concentrations
Stone County boasts an impressive 11.41% organic matter, nearly triple the state average of 4.15%. This extraordinary fertility compensates for a lower water capacity of 0.107 in/in, which is drier than the Arkansas average.
Well Drained with Moderate Infiltration
Classified as well drained, these soils belong to hydrologic group B, which indicates a moderate rate of water transmission. This makes Stone County land exceptionally versatile for building projects and diverse agricultural uses.
Superior Natural Fertility in Zone 7b
The high organic content in hardiness zone 7b is perfect for specialty herbs and heirloom vegetables that require rich nutrients. While the soil dries out faster than others, the high fertility makes it a powerhouse for Ozark growers.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group B — Moderate Runoff
Moderately deep, moderately well-drained soils with moderate infiltration rates. Good balance of drainage and water retention.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Sandy loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Stone County have?
Stone County's soil is classified as Sandy loam. This indicates the relative proportions of sand, silt, and clay — 43% sand, 28% silt, and 14% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Stone County's soil acidic or alkaline?
Stone County's soil has a pH of 5.5, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Stone County?
Stone County has a dominant drainage class of "Well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Stone County's soil?
Based on Stone County's Sandy loam texture, pH of 5.5, and Well drained, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Stone County?
Stone County's dominant soil order is Ultisols. Ultisols are highly weathered, clay-rich soils common in humid regions. They are low in natural fertility and often require lime and fertilizer for agriculture.
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Other Counties in Arkansas
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.