Knox County Soil Data
Knox County, Nebraska
Avg pH
6.9
Texture
Silty clay loam
Drainage
Well drained
Organic Matter
2.2%
Hydrologic Group
C
Data Story
About Soil in Knox County, Nebraska
Productive Mollisols of Knox County
Knox County soil has a pH of 6.94, which is very close to neutral and slightly higher than the state average. These soils belong to the Mollisols order, known globally for their naturally fertile surface horizons. The county's soil score of 51.3 reflects a solid foundation for varied agricultural uses.
Rich Silty Clay Loam
The dominant texture is silty clay loam, formed from 39.9% silt and 21.5% clay. This mix provides a good balance between nutrient retention and drainage, making it very desirable for farming. The 37.9% sand content ensures the soil doesn't become too heavy or impenetrable.
Steady Growth Potential
Organic matter content stands at 2.24%, which is above the national average of 2.0% but trails the Nebraska average of 3.32%. The available water capacity is 0.165 in/in, just below the state benchmark of 0.172. These numbers suggest a reliable soil that responds well to standard fertilization practices.
Well Drained and Reliable
The soil is classified as well drained and falls into hydrologic group C. This indicates that while the soil has a slower infiltration rate when wet, it generally manages water effectively for most crops. This drainage class makes the land suitable for a wide range of agricultural and development projects.
Cultivate Success in Zone 5a
In Hardiness Zone 5a, Knox County's silty clay loam is perfect for growing hearty vegetables like pumpkins and squash. The near-neutral pH and Mollisol heritage offer a great starting point for any home gardener. Dig in this spring and take advantage of these well-drained, fertile acres.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group C — Moderate-High Runoff
Soils with slow infiltration rates, often with a layer that impedes downward water movement. Higher clay content restricts drainage.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Silty clay loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Knox County have?
Knox County's soil is classified as Silty clay loam. This indicates the relative proportions of sand, silt, and clay — 38% sand, 40% silt, and 21% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Knox County's soil acidic or alkaline?
Knox County's soil has a pH of 6.9, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Knox County?
Knox 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 Knox County's soil?
Based on Knox County's Silty clay loam texture, pH of 6.9, 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 Knox County?
Knox County's dominant soil order is Mollisols. Mollisols are fertile, dark-colored soils that formed under grassland vegetation. They are among the most productive agricultural soils in the world.
Planning your lawn? View lawn care data for Knox County on LawnByCounty.com →
Other Counties in Nebraska
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.