PREFACE |
|
xiii | |
|
|
1 | (28) |
|
1.1 Functions of Soils in Our Ecosystem |
|
|
2 | (1) |
|
1.2 Medium for Plant Growth |
|
|
3 | (3) |
|
1.3 Regulator of Water Supplies |
|
|
6 | (1) |
|
1.4 Recycler of Raw Materials |
|
|
7 | (1) |
|
1.5 Habitat for Soil Organisms |
|
|
7 | (1) |
|
|
8 | (1) |
|
1.7 Soil as a Natural Body |
|
|
9 | (2) |
|
1.8 The Soil Profile and Its Layers (Horizons) |
|
|
11 | (2) |
|
|
13 | (3) |
|
1.10 Soil: The Interface of Air, Minerals, Water, and Life |
|
|
16 | (1) |
|
1.11 Mineral (Inorganic) Constituents of Soils |
|
|
16 | (2) |
|
|
18 | (2) |
|
1.13 Soil Water: A Dynamic Solution |
|
|
20 | (2) |
|
1.14 Soil Air: A Changing Mixture of Gases |
|
|
22 | (1) |
|
1.15 Interaction of Four Components to Supply Plant Nutrients |
|
|
22 | (2) |
|
1.16 Nutrient Uptake by Plant Roots |
|
|
24 | (2) |
|
1.17 Soil Quality, Degradation, and Resilience |
|
|
26 | (1) |
|
|
27 | (1) |
|
|
27 | (1) |
|
|
28 | (1) |
|
2 FORMATION OF SOILS FROM PARENT MATERIALS |
|
|
29 | (30) |
|
2.1 Weathering of Rocks and Minerals |
|
|
29 | (2) |
|
2.2 Physical Weathering (Disintegration) |
|
|
31 | (2) |
|
2.3 Chemical Weathering (Decomposition) |
|
|
33 | (1) |
|
2.4 Factors Influencing Soil Formation |
|
|
34 | (1) |
|
|
35 | (1) |
|
2.6 Residual Parent Material |
|
|
35 | (1) |
|
|
36 | (1) |
|
2.8 Alluvial Stream Deposits |
|
|
37 | (1) |
|
|
38 | (2) |
|
2.10 Parent Materials Transported by Glacial Ice and Meltwaters |
|
|
40 | (2) |
|
2.11 Parent Materials Transported by Wind |
|
|
42 | (1) |
|
|
43 | (2) |
|
|
45 | (2) |
|
2.14 Biota: Living Organisms |
|
|
47 | (3) |
|
|
50 | (1) |
|
|
51 | (1) |
|
2.17 Soil Formation in Action |
|
|
52 | (3) |
|
|
55 | (2) |
|
|
57 | (1) |
|
|
58 | (1) |
|
|
58 | (1) |
|
|
59 | (36) |
|
3.1 Concept of Individual Soils |
|
|
60 | (1) |
|
3.2 Comprehensive Classification System: Soil Taxonomy |
|
|
60 | (5) |
|
3.3 Categories and Nomenclature of Soil Taxonomy |
|
|
65 | (1) |
|
|
66 | (4) |
|
3.5 Entisols (Recent: Little If Any Profile Development) |
|
|
70 | (1) |
|
3.6 Inceptisols (Few Diagnostic Features: Inception of B Horizon) |
|
|
71 | (1) |
|
3.7 Andisols (Volcanic Ash Soils) |
|
|
71 | (1) |
|
3.8 Gelisols (Permafrost and Frost Churning) |
|
|
72 | (2) |
|
3.9 Histosols (Organic Soils without Permafrost) |
|
|
74 | (1) |
|
3.10 Aridisols (Dry Soils) |
|
|
75 | (2) |
|
3.11 Vertisols (Dark, Swelling and Cracking Clays) |
|
|
77 | (2) |
|
3.12 Mollisols (Dark, Soft Soils of Grasslands) |
|
|
79 | (2) |
|
3.13 Alfisols (Argillic or Natric Horizon, Medium to High Bases) |
|
|
81 | (1) |
|
3.14 Ultisols (Argillic Horizon, Low Bases) |
|
|
82 | (1) |
|
3.15 Spodosols (Acid, Sandy, Forest Soils, Low Bases) |
|
|
83 | (1) |
|
3.16 Oxisols (Oxic Horizon, Highly Weathered) |
|
|
84 | (1) |
|
3.17 Lower-Level Categories in Soil Taxonomy |
|
|
85 | (4) |
|
3.18 Soil Surveys and Maps |
|
|
89 | (3) |
|
|
92 | (1) |
|
|
93 | (1) |
|
|
94 | (1) |
|
4 SOIL ARCHITECTURE AND PHYSICAL PROPERTIES |
|
|
95 | (36) |
|
|
96 | (1) |
|
4.2 Soil Texture (Size Distribution of Soil Particles) |
|
|
97 | (3) |
|
4.3 Soil Textural Classes |
|
|
100 | (4) |
|
4.4 Structure of Mineral Soils |
|
|
104 | (2) |
|
|
106 | (7) |
|
4.6 Pore Space of Mineral Soils |
|
|
113 | (2) |
|
4.7 Formation and Stabilization of Soil Aggregates |
|
|
115 | (6) |
|
4.8 Tillage and Structural Management of Soils |
|
|
121 | (4) |
|
4.9 Soil Properties Relevant to Engineering Uses |
|
|
125 | (4) |
|
|
129 | (1) |
|
|
129 | (1) |
|
|
130 | (1) |
|
5 SOIL WATER: CHARACTERISTICS AND BEHAVIOR |
|
|
131 | (27) |
|
5.1 Structure and Related Properties of Water |
|
|
132 | (2) |
|
5.2 Capillary Fundamentals and Soil Water |
|
|
134 | (1) |
|
5.3 Soil Water Energy Concepts |
|
|
135 | (5) |
|
5.4 Soil Moisture Content and Soil Water Potential |
|
|
140 | (3) |
|
5.5 The Flow of Liquid Water in Soil |
|
|
143 | (3) |
|
5.6 Infiltration and Percolation |
|
|
146 | (4) |
|
5.7 Water Vapor Movement in Soils |
|
|
150 | (1) |
|
5.8 Qualitative Description of Soil Wetness |
|
|
150 | (5) |
|
|
155 | (1) |
|
|
156 | (1) |
|
|
157 | (1) |
|
6 SOIL AND THE HYDROLOGIC CYCLE |
|
|
158 | (36) |
|
6.1 The Global Hydrologic Cycle |
|
|
159 | (1) |
|
6.2 Fate of Precipitation and Irrigation Water |
|
|
160 | (3) |
|
6.3 The Soil-Plant-Atmosphere Continuum |
|
|
163 | (4) |
|
6.4 Efficiency of Water Use |
|
|
167 | (2) |
|
6.5 Control of Evapotranspiration (ET) |
|
|
169 | (1) |
|
6.6 Control of Surface Evaporation (E) |
|
|
169 | (2) |
|
6.7 Percolation-Evaporation Balance |
|
|
171 | (2) |
|
6.8 Percolation and Groundwaters |
|
|
173 | (3) |
|
6.9 Enhancing Soil Drainage |
|
|
176 | (5) |
|
6.10 Septic Tank Drain Fields |
|
|
181 | (4) |
|
6.11 Irrigation Principles and Practices |
|
|
185 | (6) |
|
|
191 | (1) |
|
|
192 | (1) |
|
|
192 | (2) |
|
7 SOIL AERATION AND TEMPERATURE |
|
|
194 | (32) |
|
|
194 | (2) |
|
7.2 Means of Characterizing Soil Aeration |
|
|
196 | (1) |
|
7.3 Oxidation-Reduction (Redox) Potential |
|
|
197 | (3) |
|
7.4 Factors Affecting Soil Aeration |
|
|
200 | (2) |
|
7.5 Ecological Effects of Soil Aeration |
|
|
202 | (2) |
|
7.6 Aeration in Relation to Containerized and Ornamental Plants |
|
|
204 | (3) |
|
7.7 Wetlands and Their Poorly Aerated Soils |
|
|
207 | (3) |
|
7.8 Processes Affected by Soil Temperature |
|
|
210 | (4) |
|
7.9 Absorption and Loss of Solar Energy |
|
|
214 | (3) |
|
7.10 Thermal Properties of Soils |
|
|
217 | (4) |
|
7.11 Soil Temperature Control |
|
|
221 | (2) |
|
|
223 | (1) |
|
|
224 | (1) |
|
|
224 | (2) |
|
8 SOIL COLLOIDS: THEIR NATURE AND PRACTICAL SIGNIFICANCE |
|
|
226 | (26) |
|
8.1 Properties of Soil Colloids |
|
|
227 | (2) |
|
|
229 | (1) |
|
8.3 Fundamentals of Layer Silicate Clay Structure |
|
|
230 | (2) |
|
8.4 Mineralogical Organization of Silicate Clays |
|
|
232 | (4) |
|
8.5 Genesis of Soil Colloids |
|
|
236 | (2) |
|
8.6 Sources of Charges on Soil Colloids |
|
|
238 | (3) |
|
|
241 | (1) |
|
8.8 Cation Exchange Capacity |
|
|
241 | (4) |
|
8.9 Availability of Exchangeable Cations as Plant Nutrients |
|
|
245 | (1) |
|
|
246 | (2) |
|
8.11 Soil Colloids and Environmental Quality |
|
|
248 | (1) |
|
|
249 | (1) |
|
|
250 | (1) |
|
|
251 | (1) |
|
9 SOIL ACIDITY, ALKALINITY, AND SALINITY |
|
|
252 | (38) |
|
|
253 | (3) |
|
9.2 Sources of Alkalinity |
|
|
256 | (2) |
|
|
258 | (2) |
|
9.4 Variability in Soil pH |
|
|
260 | (4) |
|
9.5 Soil Reaction: Correlations |
|
|
264 | (1) |
|
9.6 Determination of Soil pH |
|
|
265 | (2) |
|
9.7 Methods of Intensifying Soil Acidity |
|
|
267 | (1) |
|
9.8 Decreasing Soil Acidity: Liming Materials |
|
|
268 | (1) |
|
9.9 Reactions of Lime in the Soil |
|
|
268 | (1) |
|
9.10 Lime Requirements: Quantities Needed |
|
|
269 | (2) |
|
9.11 Practical Considerations |
|
|
271 | (2) |
|
9.12 Ameliorating Acidity in Subsoils |
|
|
273 | (1) |
|
9.13 Alkaline and Salt-Affected Soils |
|
|
273 | (1) |
|
9.14 Development of Salt-Affected Soils |
|
|
274 | (1) |
|
9.15 Measuring Salinity and Alkalinity |
|
|
275 | (1) |
|
9.16 Classes of Salt-Affected Soils |
|
|
276 | (3) |
|
9.17 Selective Tolerance of Higher Plants to Saline and Sodic Soils |
|
|
279 | (2) |
|
9.18 Management of Saline and Sodic Soils |
|
|
281 | (2) |
|
9.19 Reclamation of Saline Soils |
|
|
283 | (2) |
|
9.20 Reclamation of Saline-Sodic and Sodic Soils |
|
|
285 | (2) |
|
|
287 | (1) |
|
|
288 | (1) |
|
|
288 | (2) |
|
10 ORGANISMS AND ECOLOGY OF THE SOIL |
|
|
290 | (32) |
|
10.1 The Diversity of Organisms in the Soil |
|
|
290 | (2) |
|
|
292 | (4) |
|
10.3 Organism Abundance, Biomass, and Metabolic Activity |
|
|
296 | (1) |
|
10.4 Earthworms and Termites |
|
|
297 | (4) |
|
|
301 | (2) |
|
10.6 Roots of Higher Plants |
|
|
303 | (2) |
|
|
305 | (1) |
|
|
306 | (4) |
|
|
310 | (2) |
|
|
312 | (1) |
|
10.11 Conditions Affecting the Growth of Soil Microorganisms |
|
|
312 | (2) |
|
10.12 Beneficial Effects of Soil Organisms |
|
|
314 | (1) |
|
10.13 Soil Organisms and Damage to Higher Plants |
|
|
315 | (2) |
|
10.14 Ecological Relationships Among Soil Organisms |
|
|
317 | (3) |
|
|
320 | (1) |
|
|
320 | (1) |
|
|
321 | (1) |
|
|
322 | (35) |
|
11.1 The Global Carbon Cycle |
|
|
322 | (2) |
|
11.2 The Process of Decomposition in Soils |
|
|
324 | (4) |
|
11.3 Factors Controlling Rates of Decomposition and Mineralization |
|
|
328 | (5) |
|
11.4 Humus: Genesis and Nature |
|
|
333 | (2) |
|
11.5 Composts and Composting |
|
|
335 | (3) |
|
11.6 Direct Influences of Organic Matter on Plant Growth |
|
|
338 | (1) |
|
11.7 Influence of Organic Matter on Soil Properties and the Environment |
|
|
339 | (2) |
|
11.8 Management of Amount and Quality of Soil Organic Matter |
|
|
341 | (2) |
|
11.9 Carbon Balance in the Soil-Plant-Atmosphere System |
|
|
343 | (1) |
|
11.10 Factors and Practices Influencing Soil Organic Matter Levels |
|
|
344 | (5) |
|
11.11 Soils and the Greenhouse Effect |
|
|
349 | (3) |
|
11.12 Organic Soils (Histosols) |
|
|
352 | (2) |
|
|
354 | (1) |
|
|
355 | (1) |
|
|
355 | (2) |
|
12 NITROGEN AND SULFUR ECONOMY OF SOILS |
|
|
357 | (34) |
|
12.1 Influence of Nitrogen on Plant Growth and Development |
|
|
358 | (1) |
|
12.2 Origin and Distribution of Nitrogen |
|
|
358 | (1) |
|
|
359 | (1) |
|
12.4 Immobilization and Mineralization |
|
|
359 | (2) |
|
12.5 Ammonium Fixation by Clay Minerals |
|
|
361 | (1) |
|
12.6 Ammonia Volatilization |
|
|
361 | (1) |
|
|
362 | (2) |
|
12.8 The Nitrate Leaching Problem |
|
|
364 | (2) |
|
12.9 Gaseous Losses by Denitrification |
|
|
366 | (5) |
|
12.10 Biological Nitrogen Fixation |
|
|
371 | (1) |
|
12.11 Symbiotic Fixation with Legumes |
|
|
372 | (3) |
|
12.12 Symbiotic Fixation with Nonlegumes |
|
|
375 | (2) |
|
12.13 Nonsymbiotic Nitrogen Fixation |
|
|
377 | (1) |
|
12.14 Addition of Nitrogen to Soil in Precipitation |
|
|
377 | (1) |
|
12.15 Reactions of Nitrogen Fertilizers |
|
|
378 | (1) |
|
12.16 Practical Management of Soil Nitrogen in Agriculture |
|
|
378 | (1) |
|
12.17 Importance of Sulfur |
|
|
379 | (2) |
|
12.18 Natural Sources of Sulfur |
|
|
381 | (2) |
|
|
383 | (1) |
|
12.20 Behavior of Sulfur Compounds in Soils |
|
|
383 | (2) |
|
12.21 Sulfur Oxidation and Reduction |
|
|
385 | (1) |
|
12.22 Sulfur Retention and Exchange |
|
|
386 | (1) |
|
12.23 Sulfur and Soil Fertility Maintenance |
|
|
387 | (2) |
|
|
389 | (1) |
|
|
389 | (1) |
|
|
390 | (1) |
|
13 SOIL PHOSPHORUS, POTASSIUM, AND MICRONUTRIENTS |
|
|
391 | (44) |
|
13.1 Role of Phosphorus in Plant Nutrition and Soil Fertility |
|
|
392 | (1) |
|
13.2 Effects of Phosphorus on Environmental Quality |
|
|
393 | (4) |
|
13.3 The Phosphorus Cycle |
|
|
397 | (3) |
|
13.4 Organic Phosphorus in Soils |
|
|
400 | (2) |
|
13.5 Inorganic Phosphorus in Soils |
|
|
402 | (1) |
|
13.6 Solubility of Inorganic Phosphorus in Acid Soils |
|
|
403 | (3) |
|
13.7 Inorganic Phosphorus Availability at High pH Values |
|
|
406 | (1) |
|
13.8 Phosphorus-Fixation Capacity of Soils |
|
|
406 | (4) |
|
13.9 Practical Control of Phosphorus Availability |
|
|
410 | (1) |
|
13.10 Potassium: Nature and Ecological Roles |
|
|
411 | (1) |
|
13.11 Potassium in Plant and Animal Nutrition |
|
|
411 | (1) |
|
13.12 The Potassium Cycle |
|
|
412 | (3) |
|
13.13 The Potassium Problem in Soil Fertility |
|
|
415 | (2) |
|
13.14 Forms and Availability of Potassium in Soils |
|
|
417 | (2) |
|
13.15 Factors Affecting Potassium Fixation in Soils |
|
|
419 | (1) |
|
13.16 Practical Aspects of Potassium Management |
|
|
420 | (1) |
|
13.17 Importance of Micronutrient Elements |
|
|
421 | (1) |
|
13.18 Role of the Micronutrients |
|
|
422 | (1) |
|
13.19 Source of Micronutrients |
|
|
422 | (2) |
|
13.20 Factors Affecting the Availability of Micronutrients |
|
|
424 | (5) |
|
13.21 Need for Nutrient Balance |
|
|
429 | (1) |
|
13.22 Soil Management and Micronutrient Needs |
|
|
430 | (2) |
|
|
432 | (1) |
|
|
432 | (1) |
|
|
433 | (2) |
|
14 PRACTICAL NUTRIENT MANAGEMENT |
|
|
435 | (38) |
|
14.1 Goals of Nutrient Management |
|
|
435 | (3) |
|
14.2 Environmental Quality |
|
|
438 | (3) |
|
14.3 Soil-Plant-Atmosphere Nutrient Cycles |
|
|
441 | (3) |
|
14.4 Recycling Nutrients through Animal Manures |
|
|
444 | (2) |
|
14.5 Storage, Treatment, and Management of Animal Manures |
|
|
446 | (2) |
|
14.6 Industrial and Municipal By-Products |
|
|
448 | (1) |
|
14.7 Sewage Effluent and Sludge |
|
|
449 | (1) |
|
14.8 Practical Utilization of Organic Nutrient Sources |
|
|
450 | (1) |
|
14.9 Inorganic Commercial Fertilizers |
|
|
451 | (6) |
|
14.10 The Concept of the Limiting Factor |
|
|
457 | (2) |
|
14.11 Fertilizer Application Methods |
|
|
459 | (3) |
|
14.12 Timing of Fertilizer Application |
|
|
462 | (1) |
|
14.13 Diagnostic Tools and Methods |
|
|
462 | (1) |
|
14.14 Plant Symptoms and Field Observations |
|
|
463 | (1) |
|
14.15 Plant Analysis and Tissue Testing |
|
|
463 | (1) |
|
|
463 | (5) |
|
14.17 Site-Specific Nutrient Management |
|
|
468 | (1) |
|
14.18 Broader Aspects of Fertilizer Practice |
|
|
469 | (1) |
|
|
470 | (1) |
|
|
471 | (1) |
|
|
471 | (2) |
|
15 SOIL EROSION AND ITS CONTROL |
|
|
473 | (38) |
|
15.1 Significance of Soil Erosion and Land Degradation |
|
|
474 | (2) |
|
15.2 On-Site and Off-Site Effects of Accelerated Soil Erosion |
|
|
476 | (4) |
|
15.3 Mechanics of Water Erosion |
|
|
480 | (2) |
|
15.4 Factors Affecting Erosion by Water |
|
|
482 | (7) |
|
15.5 Conservation Tillage |
|
|
489 | (4) |
|
15.6 Control of Accelerated Erosion on Range and Forest Land |
|
|
493 | (2) |
|
15.7 Erosion and Sediment Control on Construction Sites |
|
|
495 | (4) |
|
15.8 Wind Erosion and Its Control |
|
|
499 | (4) |
|
15.9 Land Capability Classification as a Guide to Conservation |
|
|
503 | (3) |
|
15.10 Progress in Soil Conservation |
|
|
506 | (1) |
|
|
507 | (1) |
|
|
508 | (1) |
|
|
509 | (2) |
APPENDIX A U.S. SOIL TAXONOMY SUBORDER MAP AND LEGEND |
|
511 | (4) |
APPENDIX B CANADIAN AND FAO SOIL CLASSIFICATION SYSTEMS |
|
515 | (4) |
APPENDIX C SI UNIT CONVERSION FACTORS AND PERIODIC TABLE OF THE ELEMENTS |
|
519 | (4) |
GLOSSARY |
|
523 | (24) |
INDEX |
|
547 | |