Adair County Soil Data
Adair County, Missouri
Avg pH
6.4
Texture
Silt Loam
Drainage
N/A
Organic Matter
2.9%
Hydrologic Group
N/A
Data Story
About Soil in Adair County, Missouri
Neutral Soils in Adair County
Adair County’s soil sits at a pH of 6.43, which is nearly identical to the national median of 6.5. While specific taxonomic data is limited for this region, the soil is significantly less acidic than the Missouri state average of 6.09.
A Balanced Silt-Heavy Mix
The mix of 25.4% sand, 50.3% silt, and 24.2% clay creates a balanced medium for plant roots. This composition offers good workability for farmers while the clay content ensures the soil retains necessary minerals and structure.
Strong Water Storage Potential
With an Available Water Capacity of 0.196 in/in, Adair exceeds the state average of 0.183, helping crops withstand dry spells. Organic matter sits at 2.92%, which is lower than the state’s 4.74% average but remains above the national benchmark of 2.0%.
High Productivity Soil Scores
Specific drainage and hydrologic data are unavailable for this area, though the county's overall soil score of 74.7 suggests a high baseline for productivity. Local growers should monitor moisture levels closely during peak summer months as data is limited.
Zone 6a Gardening Success
Located in USDA Hardiness Zone 6a, this soil is well-suited for staples like sweet corn and tomatoes. With a soil score well above the state average, Adair is an excellent place to start a productive backyard vegetable patch.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Adair County have?
Adair County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 25% sand, 50% silt, and 24% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Adair County's soil acidic or alkaline?
Adair County's soil has a pH of 6.4, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Adair County?
Drainage class data is not currently available for Adair County.
What crops or plants grow well in Adair County's soil?
Based on Adair County's Silt Loam texture, pH of 6.4, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Adair County?
The dominant USDA soil order for Adair County is not currently available in our dataset.
Planning your lawn? View lawn care data for Adair County on LawnByCounty.com →
Other Counties in Missouri
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.