About 135,000 results
Open links in new tab
  1. Soil - Wikipedia

    Soil, also commonly referred to as earth, is a mixture of organic matter, minerals, gases, water, and organisms that together support the life of plants and soil organisms. Some scientific definitions …

  2. Web Soil Survey - Home

    Jul 31, 2019 · The site is updated and maintained online as the single authoritative source of soil survey information. Soil surveys can be used for general farm, local, and wider area planning.

  3. Soil | Definition, Importance, Types, Erosion, Composition, & Facts ...

    Jan 2, 2026 · The evolution of soils and their properties is called soil formation, and according to pedologists, five fundamental soil formation processes influence soil properties.

  4. What Is Soil Made Of? Understanding the Living System That Sustains ...

    4 days ago · Soil is a living system of minerals, organic matter, water, and microbes that supports plants, filters water, and sustains ecosystems worldwide.

  5. Soil Composition and Types - Geology Science

    Nov 4, 2024 · Understanding soil composition and types is essential for sustainable agriculture, land management, and environmental conservation. This article delves deeper into the components of …

  6. Soils | U.S. Geological Survey - USGS.gov

    Aug 1, 2025 · Soils are the foundation of terrestrial systems, storing water and nutrients that support forests, crops, and human societies. Geology, climate, ecosystems, and human activities all affect soils.

  7. Soil Survey Map - ArcGIS

    Explore detailed soil survey maps and data using the ArcGIS Soil Survey Map application.

  8. soils - Michigan State University

    A desirable soil is a loam with enough sand to drain well yet with enough clay and silt to hold to hold moisture. Silt-sized grains also contain nutrients and help make a soil workable.

  9. What Is Soil - GeeksforGeeks

    Jul 23, 2025 · Soil is the top layer of the earth's crust composed of mineral particles, organic matter, water, and air. It's a living, dynamic ecosystem that supports plant life and plays a vital role in the …

  10. What is soil? - Mississippi State University Extension Service

    Soil is a living, dynamic resource that supports plant life. It is made up of different size mineral particles (sand, silt, and clay), organic matter, and numerous species of living organisms.