| Yields of the Field Experiments 1971 | -1 |
| Yields of the Field Experiments 1971 | 1 |
| Contents 1971 | 3 |
| Conventions 1971 | 7 |
| Harvest Areas for Cereals | 8 |
| Experiments - Classicals | 9 |
| 71/R/BK/1 Broadbalk - Potatoes, Beans, Wheat | 9 |
| 71/R/HB/2 Hoosfield - Potatoes, Beans, Barley | 14 |
| 71/R/WF/3 Wheat and Fallow - Wheat | 21 |
| 71/R/EX/4 Exhaustion Land - Barley | 22 |
| 71/R/PG/5 Park Grass - Hay | 23 |
| 71/R/AG/6 Agdell - Barley, Potatoes | 25 |
| 71/R/BN/7 Barnfield - Beans, Sugar Beet, Potatoes | 30 |
| 71/R/GC/8 Garden Clover - Clover | 39 |
| 71/S/RN/1 Rotation I - Grass, Lucerne | 40 |
| 71/S/RN/2 Rotation II - Sugar Beet, Potatoes, Barley | 44 |
| Rotations | 50 |
| 71/R/RN/1 and 71/R/RN/2 Ley/ARABLE - Old Grass, Leys, Barley, Wheat | 50 |
| 71/W/RN/3 Ley/ARABLE - Leys, Potatoes, Rye, Carrots, Barley | 68 |
| 71/W/RN/4 Market Garden - Barley, Potatoes | 76 |
| 71/R/RN/5 Arable Reference Plots - Barley, Ley, Potatoes, Wheat, Kale | 80 |
| 71/W/RN/6 Arable Reference Plots - Old Grass, Sugar Beet, Barley, Ley, Potatoes, Oats | 84 |
| 71/R/RN/7 Residual Phosphate - Potatoes, Barley, Swedes | 88 |
| 71/R/RN/8 Cultivation/WEEDKILLER - Beans, S. Wheat, Potatoes, Barley | 92 |
| 71/R/RN/9 Cereal Disease Reference Plots - W. Wheat, S. Wheat | 99 |
| 71/R/RN/1 Irrigation - Potatoes, Beans | 101 |
| 71/W/RN/12 Organic Manuring - Leys, Rye | 107 |
| 71/W/RN/13 Intensive Cereals - Ley, Potatoes, Wheat, Barley | 111 |
| 71/W/RN/14 Long-term Phosphate - Barley, Potatoes | 116 |
| 71/W/RN/15 Rotation and Fumigation - Potatoes, Barley, Sugar Beet | 120 |
| Crop Sequences | 125 |
| 71/R/CS/1 Levels of N and K - Potatoes | 125 |
| 71/R/CS/2 Grazed Reference Plots - Old Grass | 128 |
| 71/R/CS/6 Wheat After Intensive Barley - Wheat | 130 |
| 71/R/CS/10 and 71/W/CS/10 Long-term Liming - Barley | 132 |
| 71/W/CS/11 Soil Structure - Wheat | 137 |
| 71/R/CS/13 N and Mg Levels to Old Grass - Old Grass | 139 |
| 71/R/CS/14 N P K to Old Grass - Old Grass | 143 |
| 71/W/CS/15 Direct Seeding - Wheat | 150 |
| 71/W/CS/16 Irrigation and Eelworms - Potatoes | 152 |
| 71/W/CS/20 Placement of Fumigant - Potatoes | 156 |
| 71/R/CS/24 P K and Take-all - Barley | 158 |
| 71/W/CS/28 Fumigants and Irrigation - Barley | 163 |
| 71/W/CS/33 Rates of Nematicides Dosage - Barley | 166 |
| 71/W/CS/34 Nematicides in Crop Sequence - Potatoes | 168 |
| 71/R/CS/41 Cultivations and Soil Invertebrates - Old Grass, New Grass | 170 |
| 71/R/CS/42 Effect of Invertebrates on Yield - Old Grass | 172 |
| 71/R/CS/43 Aqua Ammonia - Old Grass | 174 |
| 71/R/CS/44 Break Crops and Wheat - Barley | 178 |
| 71/R/CS/49 and 71/W/CS/49 Fumigant and N - W. Wheat, S. Wheat | 180 |
| 71/W/CS/51 Autumn and Spring Fumigants - Potatoes | 184 |
| 71/W/CS/52 Fumigants, Temik and N - S. Wheat | 186 |
| 71/W/CS/55 Fumigation and N - Beans | 188 |
| 71/W/CS/56 Nematodes and Verticillium - Potatoes | 190 |
| 71/R/CS/58 Crop Sequence and Take-all - S. Wheat | 192 |
| 71/R/CS/59 Break Crops and Wheat - Wheat | 195 |
| 71/W/CS/60 Glycoluril for Grass - Ryegrass | 197 |
| 71/R/CS/61 Fungicides - Old Grass | 199 |
| 71/W/CS/63 Nematodes and Verticillium - Potatoes | 202 |
| 71/W/CS/64 Fumigants and Ditylenchus - Onions | 204 |
| 71/W/CS/66 Dazomet and Nitrogen -maize | 206 |
| 71/W/CS/67 Much Fertiliser and Fym - Wheat | 208 |
| 71/R/CS/68 Ammonium Phosphates - Ryegrass | 210 |
| 71/R/CS/69 Early and Late Mildew - Barley | 213 |
| 71/R/CS/71 Weedkiller and Aqueous N - Old Grass | 215 |
| 71/R/CS/74 Break Crops and Wheat - Barley, Oats, Beans, Maize, Clover, Undersown Trefoil | 220 |
| 71/R/CS/76 and 71/W/CS/76 Rates of N P K Fertiliser - Potatoes | 223 |
| 71/W/CS/77 Much Fertiliser and Fym - Potatoes | 227 |
| 71/W/CS/78 Nematodes and Verticillium - Potatoes | 229 |
| 71/W/CS/79 Chemicals and Scab - Potatoes | 231 |
| 71/S/CS/1 Row Spacing and Seed Rates After Intensive Wheat - Wheat | 233 |
| Annuals - Wheat | 235 |
| 71/R/WW/1 and 71/W/WW/1 Varieties and N - W. Wheat | 235 |
| 71/R/WW/2 Septoria - W. Wheat | 239 |
| 71/R/WW/3 Gaines, Seed Rates, N and Ccc - W. Wheat | 241 |
| 71/R/WW/4 Ethrel, Dust and Spray - W. Wheat | 243 |
| 71/R/WW/5 Weedkillers and Aqueous N - W. Wheat | 245 |
| 71/R/WW/6 and 71/BB/WW/6 Growth and Yield on Contrasted Sites - W. Wheat | 249 |
| 71/R/WW/7 Systemic Fungicides - W. Wheat | 253 |
| 71/R/WW/8 Benomyl and Eyespot - W. Wheat | 255 |
| 71/R/WS/2 Ethrel, Dust and Spray - S. Wheat | 257 |
| 71/R/WS/3 Dwarf Spring Wheat, Varieties, N and Ccc - S. Wheat | 259 |
| 71/R/WS/7 Effects of Blue/GREEN Algae - S. Wheat | 261 |
| Barley | 263 |
| 71/R/B/1 and 71/BB/B/1 Growth and Yield on Contrasted Sites - Barley | 263 |
| 71/R/B/2 and 71/W/B/2 Varieties, N and Ethirimol - Barley | 267 |
| 71/R/B/3 and 71/W/B/3 Rates, Forms and Methods of Applying N - Barley | 271 |
| 71/R/B/5 Control of Cereal Aphids and Bydv - Barley | 274 |
| 71/R/B/6 Weedkiller and Aqueous N - Barley | 276 |
| 71/R/B/7 Seed Rates, Row Spacing and Ethirimol - Barley | 279 |
| 71/R/B/8 Times of Applying Ethirimol - Barley | 281 |
| 71/R/B/9 Ethrel, Dust and Spray - Barley | 283 |
| 71/R/B/10 Systemic Fungicides - Barley | 285 |
| 71/R/B/11 Methods of Applying Systemic Fungicides - Barley | 287 |
| 71/R/B/12 Early and Late Mildew - Barley | 289 |
| 71/R/B/13 Methods of Applying N P K - Barley | 291 |
| 71/S/B/1 Varieties, N Rates and Times of Application - Barley | 293 |
| 71/S/B/2 N Rates After Grass and Arable - Barley | 296 |
| Beans | 298 |
| 71/R/BE/1 Chemical Control of Soil-borne Pathogens - Beans | 298 |
| 71/W/BE/1 Control of Sitona - Beans | 300 |
| 71/R/BE/2 and 71/W/BE/2 Effects of Sitona on Yield - Beans | 302 |
| 71/R/BE/3 Control of Vectors and Viruses - Beans | 304 |
| 71/R/BE/5 Effects of Aphids - Beans | 306 |
| 71/R/BE/6 Varieties and Broad bean Stain Virus - Beans | 308 |
| 71/R/BE/7 Row Spacing, Drills and Weedkillers - Beans | 310 |
| 71/R/BE/8 Photosynthetic Zones - Beans | 312 |
| 71/R/BE/9 Seed Rates, Row Spacing and Growth Regulators - Beans | 314 |
| Potatoes | 316 |
| 71/R/P/1 Seed Stocks, Diseases and Fungicides - Potatoes | 316 |
| 71/W/P/1 Seed Stocks, Diseases and Fungicides - Potatoes | 319 |
| 71/R/P/2 Chemicals and Seed-borne Fungi - Potatoes | 322 |
| 71/R/P/10 Spacing, Seed Size and Fertiliser - Potatoes | 324 |
| 71/R/P/11 Blight and Aphid Reference Plots - Potatoes | 328 |
| 71/R/P/13 Comparison of Fungicides - Potatoes | 331 |
| 71/R/P/15 Ethrel and N - Potatoes | 333 |
| 71/R/SC/1 Seed Spacing and N - Sweet Corn | 335 |
| 71/R/K/1 Virus Control - Kale | 336 |
| 71/R/BS/1 Aphids and Virus - Brussels Sprouts | 338 |
| 71/R/SB/1 Ethrel and Pre-treatment - Sugar Beet | 339 |
| 71/R/G/1 Weedkiller and Aqueous N - Grass | 341 |
| 71/R/M/4 N P Fertiliser (Phenylphosphonic Acid) for Barley - Mixed Crops | 346 |
| 71/R/M/5 Amidophosphates for Barley (Resown With Ryegrass), Potatoes and Kale - Mixed Crops | 348 |
| 71/E/1 Meteorological Records 1971 - Rothamsted | 352 |
| 71/E/1 Meteorological Records 1971 - Woburn | 353 |
| 71/E/1 Meteorological Records 1971 - Saxmundham | 354 |
| Conversion Factors | 355 |
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