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Soil plays a crucial role in producing food and fiber, serving as a foundation for infrastructure, providing minerals, participating in photosynthesis, filtering water, hosting organisms, and decomposing waste. Factors like parent material, climate, living organisms, topography, and time influence soil formation. Soil consists of air, minerals, organic matter, and water. The texture of soil is determined by different-sized particles such as sand, silt, and clay. Understanding soil composition and texture is essential for sustainable land management.
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1/15/03 SOIL (dEn) Sam Vang (Soil Conservationist) USDA-Natural Resources Conservation Service 4625 W Jennifer Ave, Suite 125 Fresno, CA 93722 Phone: (559) 276-7494 Ext. 3 - Fax: (559) 276-1791 E-mail: sam.vang@ca.usda.gov
Why Is Soil Important?(apxnhyXjdEnczJjmeqvAmsBAqxnhlAy?) • Produces food and fiber (fledoAhAnaalRaqZJojhn>Dj hUm) • Foundation for roads and houses (apxnboDnIhgmR n>daHuAsAgjbAgnaHZonaalRrnunhunTAj) • Provides minerals (iron/silica) (IhgSXwyAkontADjC aakDmRn>d, tUvYADj: ahlxk/TAddenSAypUnhEn) • Important in photosynthesis (sBAqXntK*kAnrADyaaT oAkAdQojwzd)
Why Is Soil Important? continued..(apxnhyXjdEnczJjmeqvAmsBAqxnhlAy?) tK*.. • Filters water (tojnB{ATUJvipInItgdEn) • Home to organisms (plants, animals, and others)(IhgTEJaweJjwAoAsXyaakDseJjTEJmESEved, tUvYADj: wzd, sXd, aalRoekhlAyYADj) • Waste decomposer (TBAIhgseJjQojoZJnCahnu*AapEJylR lAylUjidg) ESSENTIAL NATURAL RESOURCE
What factors influence soil formation?(aamDnhyXjTEJwAIhgse*joZ*nkAy mAapxndEnidg?)
Soil Forming Factors(hAgYADjTE*apxnbK*akedQojdEn) • Parent Material(hEn) • Climate(dEnWAgoAkAd) • Living Organisms(cBAwvkaamDwyAdtADjC) • Topography(w<mmEpRaTd) • Time(kAlavlA)
The Four Components of Soil(sEJsvDnpRkobQojdEn) Air (oAkAd) 25% Mineral (TAdpRkob cAkwZ{ndEn) 45% O.M.(wzdfUlTEJahnuDAapEy)5% Water (nB{A) 25%
Different Sized Soil Particles(amxddEnTEJaatktADjkxn) Largest Sand Medium Silt Smallest Clay (amxdIhDyTEJs>d) (amxddEnSAy) (amxdkAj) (amxddEnQE[aTuA) (amxdnogyTEJs>d) (amxddEnhnVDv)
Soil Textural Triangle(H<psAmhlVDmTEJISgqBAnvnawZJoIhgH<gcXkSnenQojdEn) apeaSxndEnhnVDv apEaSxndEnQE[aTuA dEndAk apEaSxndEnSAy
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