Fundamentals of Soil ScienceA revised, comprehensive, introductory text covering soil science. Designed for undergraduates majoring in agriculture. Provides a balance between principles and practice, integrating all environmental topics. Covers temperate versus tropical and humid versus arid regions. Includes many photos of Asian and Canadian soils and agronomic practice. Examines tropical and northern soils, acidity in soils, and soil formation. |
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Page 115
... creased . A 2- to 7 - fold increase in salt con- centration is common for many rivers . Along the Rio Grande River ... creases in salt . The Colorado River , one of the largest , experiences a 21 - fold salt increase between Grand Lake ...
... creased . A 2- to 7 - fold increase in salt con- centration is common for many rivers . Along the Rio Grande River ... creases in salt . The Colorado River , one of the largest , experiences a 21 - fold salt increase between Grand Lake ...
Page 228
... creases the rate of chemical reactions two to three times . Increased weathering and clay content occur with an average in- crease in soil temperature . Jenny summa- rized the results of many studies of soils formed from igneous rocks ...
... creases the rate of chemical reactions two to three times . Increased weathering and clay content occur with an average in- crease in soil temperature . Jenny summa- rized the results of many studies of soils formed from igneous rocks ...
Page 381
... creases , the velocity of runoff water in- creases , which increases its erosive power . A doubling of velocity of runoff water in- creases kinetic energy or erosive power four times , and causes a 32 - time increase in the amount of ...
... creases , the velocity of runoff water in- creases , which increases its erosive power . A doubling of velocity of runoff water in- creases kinetic energy or erosive power four times , and causes a 32 - time increase in the amount of ...
Contents
CHAPTER | 1 |
Soil as a Medium for Plant Growth | 11 |
CHAPTER 2 | 21 |
Copyright | |
44 other sections not shown
Common terms and phrases
absorb accumulation acid acre agriculture Alfisols aluminum amount animals areas argillic horizon Aridisols bacteria base saturation bulk density calcium carbon cation exchange capacity centimeters color corn crease crops decomposed decomposition decreases deficiency depth drainage dry soil effect Entisols erosion factors fertilizer Figure forest grams hectare Histosols humid humus Inceptisols increase ions iron kaolinite kilograms land layer leaching lime loam magnesium manure matric potential meters microorganisms mineral moist Mollisols nitrate nitrogen nitrogen fixation nutrients occur organic matter content oxide Oxisols oxygen parent material peds percent phosphate phosphorus plant growth plow pore space potassium production reduced regions result salinity salt sand shown in Fig sloping sodium soil development soil horizon soil moisture regime soil particles soil pH Soil Sci soil solution soil surface soil temperature soil water soluble Spodosols sulfur surface soil texture tillage tion trients ture Ultisols uptake USDA vegetation Vertisols weathering wheat yields