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The Nature and Properties of Soils
Nyle C. Brady,Ray R. Weil +1 more
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TLDR
The Soils Around Us 2 Formation of Soils from Parent Materials 3 Soil Classification 4 Soil Architecture and Physical Properties 5 Soil Water: Characteristics and Behavior 6 Soil and the Hydrologic Cycle 7 Soil Aeration and Temperature 8 Soil Colloids: Seat of Soil Chemical and Physical Activity 9 Soil Acidity 10 Soils of Dry Regions: Alkalinity, Salinity, and Sodicity 11 Organisms and Ecology of the Soil 12 Soil Organic Matter 13 Nitrogen and Sulfur Economy of Soiles 14 Soil PhAbstract:
1 The Soils Around Us 2 Formation of Soils from Parent Materials 3 Soil Classification 4 Soil Architecture and Physical Properties 5 Soil Water: Characteristics and Behavior 6 Soil and the Hydrologic Cycle 7 Soil Aeration and Temperature 8 Soil Colloids: Seat of Soil Chemical and Physical Activity 9 Soil Acidity 10 Soils of Dry Regions: Alkalinity, Salinity, and Sodicity 11 Organisms and Ecology of the Soil 12 Soil Organic Matter 13 Nitrogen and Sulfur Economy of Soils 14 Soil Phosphorus and Potassium 15 Micronutrients and Other Trace Elements 16 Practical Nutrient Management 17 Soil Erosion and Its Control 18 Soils and Chemical Pollution 19 Geographic Soils Information 20 Prospects for Global Soil Quality Appendix A Soil Classification: World Resource Base Autralian and Canadian Systems Appendix B SI Units, Conversion Factors, Periodic Table of the Elements and Scentific Names of Plants Mentioned Glossary Indexread more
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Journal ArticleDOI
Pyrosequencing-based assessment of soil pH as a predictor of soil bacterial community structure at the continental scale.
TL;DR: The results suggest that the structure of soil bacterial communities is predictable, to some degree, across larger spatial scales, and the effect of soil pH on bacterial community composition is evident at even relatively coarse levels of taxonomic resolution.
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The rhizosphere microbiome: significance of plant beneficial, plant pathogenic, and human pathogenic microorganisms
TL;DR: The main functions of rhizosphere microorganisms and how they impact on health and disease are reviewed and several strategies to redirect or reshape the rhizospheric microbiome in favor of microorganisms that are beneficial to plant growth and health are highlighted.
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Variations in microbial community composition through two soil depth profiles
TL;DR: Using PLFAs as biomarkers, it is shown that Gram-positive bacteria and actinomycetes tended to increase in proportional abundance with increasing soil depth, while the abundances of Gram-negative bacteria, fungi, and protozoa were highest at the soil surface and substantially lower in the subsurface.
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Ecology of a Grazing Ecosystem: The Serengeti
TL;DR: Great species diversity was associated with greater biomass stability through the seasons, greater resistance to grazing by a single species of ungulate in both the wet and dry seasons, and greater resilience after grazing, and specific properties of trophic web members were identified that produced greater functional stability in more diverse communities.
Journal ArticleDOI
Primary Production of the Central Grassland Region of the United States
TL;DR: In this paper, an analysis of data collected at 9500 sites throughout the central United States confirmed the overwhelming importance of water availability as a control on production of aboveground primary production.