Index

Acid rain 226

Afforestation 218

Agricultural systems 65

Agricultural commodities 7

Algae 302

Alley crop160

Allophane 112

Aluminium 108

Animal

- excreta 48

- products 45

Anoxic 336, 338, 356

Apatite 107

- deposition, 205

- fluxes of P 326

Bacteria 250, 339, 357

Bioassays 310

Bioavailability 175, 196, 271

Biomass accumulation 303

Bran 11

Buffering capacity 75

Calcite 113

Calcium 108

- phosphate authigenic 350

- carbonate 265, 141, 339

Capital constraints 34

Carbonates 140

Cattle 17, 45

C : P ratio 132

Cell quota 303

CENTURY 135

Cereals 11

Cheese/Whey 17

Chelation 125

Chlorophyll 298, 314

- maximum 318

Clay minerals 113

Clear-cutting 187

Climate change 227

Cocoa 11

Coffee & Tea 11

Competition (species) 259

Composting 89

Conservation tillage 187, 194

Continental shelves 327

Cropping 49, 68, 160

Cultivars (plant) 92

Cultivation 68, 132

Dams 248, 326

Decomposition 129

Deforestation 149, 202

Desorption 116

Detection limit 306

Diffusion 123

Discharge 180, 246, 286

Drainage 189

- basin 288

Economics 55

Environmental loads 51

Enzyme 126

Equilibrium phosphate concentration 178, 179, 267

Erosion 195

- wind 183, 185

Erosion-Productivity Impact Calculator 134

Erythrina fusca 161

Estuaries 312, 313, 318, 321, 333

European Agriculture 43

Eutrophication 201, 255, 272, 302

Evapotranspiration 231

Extension 40

Extracting agent 351

Fertilizer 10, 30, 79, 85

- application 281

- mixtures 85

- placement 88

- prices 281

- quality 79

- recommendations 32

- soluble 80

- subsidies 38

- use 30

Fibre crops 11

Floodplain 250

- lakes 317

Fluorapatite 332, 335

Fodder 51

Food security 27

Forest 202

Fractionations 350

Gliricidia sepium 161

Global P balance 25

Goats 45

Ground water 231, 232

Growth Rate 142, 302, 303

Half-saturation constant 306

Heavy metal 94

- accumulations 97

Horses 45

Human

- activity 325

- food chain 99

Humic compounds 113

Immobilisation 131

Impoundment 248

Infrastructure 36

Inositol 114

Intensity 75

Iron 108, 338, 357

- compounds 338

- oxide 122

Isotopic exchange 117

- kinetics 295

Labour 36

Lakes

- tropical 316, 317

- saline 316

Lake "whiting" 265

Land

- degradation 150

- rehabilitation 151

- tenure 34

- use 46, 202

Landscape 202, 205, 207

- structure 222

Leaching 158, 204, 206

Leaf fall 145, 361

Legislation 54, 56

Legumes 124

Leucena leucocephala. 160

Liebig's (1840) law 304

Light limitation 304

Limiting nutrient 258, 293

Litter 129, 157

- fall 146, 361

Livestock 9

Maintenance requirement 78

Malt 11

Mangrove 354

- soils 356

Manure 53, 281

Marketing 40

Meadows 218, 229

Meat 17

Metal contaminants 93

Michaelis-Menten 257

Micro-organisms 125, 128

Milk 17, 45

Mineralisation 131

Modelling 74, 77, 120, 133, 191, 269, 299, 305

Mulch 166

Mycorrhizal fungi 127, 156, 166, 167

Mycotrophism 156

Nitrogen 256

N : P ratio 341,215, 242, 243, 263, 294, 315, 344

Nutrient 262

- management 86

- interactions 76, 87

- limitation 341

- ratios 262, 343

- translocation 145

- uptake 142

Oceans 251

- near-shore 335

- pelagic 343

Oilseed cake 11

On-farm trials 32

Oxalate 145

Oxi-hydroxides 357

Oxidation-reduction 122

Palm oil 91

Pastures 134

Patch ecotone 207, 221

Pedogenesis 61

Permissible rates 54

Phosphatase 127, 310

Phosphate fractions

- BAP 331

- DOP 173, 348

- PP 172, 178, 197

- POP 173

- SOP 172

- SRP 172, 174, 177, 194, 197, 231, 236, 384

- TPP 348

Phosphate rock 22, 83, 81, 93, 153, 161

- acidulation 85

- thermal 85

Phosphorus

- cycling 166

- loads 286

- microbial 128

- organic 128

- plant-available 139

- primary mineral 107

- slow release 81

- requirements 66

- soil solution 63

- sorption 65

Photo reduction 206

Physiological indices 310

Phytoplankton 259, 291

Pigeon pea 144

Pigs 17, 45

Plant tests 71

Plant adaptations 141

Plant uptake 122

Ploughing 182

Point of Zero Salt Effect 112

Policy 55

Pollution 171, 293

- Point source 240

- Non-point 171, 201, 184, 235, 284

Polyphosphate 129

Population density 236, 237

Population growth 27

Poultry 45

Precipitation 108, 249, 265

Price 37

Primary production 341

Profitability 32

Radionuclides 93, 103

- Ra 103

- Sr 95

- Th 103

- U 103

Rainfall 185

Redfield ratio 309

Redox 267

- potential 356

Research 40

Rhizosphere 124, 125, 128

Riparian 196, 208, 211, 229

Risk 35

River 246

- sediment flux 329

- total P flux 325

- transport 252

Rock phosphate > phosphate rock

Root 122, 142

- mat 156, 157

- system 231

Rubber 91

Runoff 177, 180, 186, 188, 192

Sediment 178, 296, 334, 209, 264, 335

- burial 327

- estuarine 335

- deep sea 327, 340

- transport 178

Sedimentation 209

Sewage 90, 237, 240, 242, 276

Sheep 17, 45

Shifting cultivation 155

Silica 264

Slope 202

Soil

- solution 140

- tests 72, 194

- types 277

Sorption 110

- curves 115

spiralling length 247

Structural adjustment 37

Subsidy 281

Subsistence farming 168

Sugarcane 91

Sulfate 249

Sulphur 89

Tile drainage 188

Tillage 205

- erosion 181

Trade 10

Trophic status 215

Turbidity maxima 334

Uptake kinetics 257

Urban 31, 237, 289

Value-cost-ratio 32

Waste recycling 90

Watershed 185, 207, 236, 289

Weathering 64

Whole-lake manipulations 311

Yield coefficient 253

Yield response 74