Soils, Land, and Life
Developed for non-agricultural majors, Soils, Land and Life, 1st Edition, examines how and why various types of soil and land are used for human food production. Unbiased in approach, it discusses the physical and chemical land and soil requirements needed to produce food and how economic, social, and political environments influence agricultural productivity. Presenting an array of soil and land properties and farming methods--ranging from slash and burn to highly technical practices--the author draws on his 40 years of worldwide experience to give readers a glimpse at the historical developments, natural resource concerns, and farming practices impacting human food production today.
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Elements Essential for Life
Elemental Transfers in the Soil Land
Soils and Land with Unique Features
7 other sections not shown
acre agricultural amount animals available pool average bulk density calcium cerrado chemical fertilizers clay concentration contain corn crop plants cropland cultivation decompose deposited depth drainage eroded erosion essential elements essential nutrient evapotranspiration farmers farming Figure floodplains food crop production food crops food production geologic grain green manure groundwater growing season harvested human food inches infiltration inorganic ions irrigation kg ha"1 land surface landscape layer leaching legume lime limestone manure microbes moisture Mollisols Montmorillonite Morrow plots natural nitrogen nutrient elements organic carbon organic compounds organic matter organic pool organic residue organic soils oxides particles pH value phosphorus Photo plant growth plant roots potassium present rainfall removed river rock runoff runoff water saturated silicate minerals slash-and-burn slope soil material soil minerals soil pH soil surface soil temperature soils formed soluble specific subsoil temperate latitudes tillage trees tropical United vegetation Vertisols voids water table weather