| Yields of the Field Experiments 1967 - Numerical Results | 1 |
| Contents 1967 | 7 |
| Classical Experiments | 13 |
| 67/R/BK/A/1 Broadbalk - Wheat | 13 |
| 67/R/HB/A/2 Hoosfield - Fallow | 17 |
| 67/R/HWF/A/3 Hoosfield - Wheat After Fallow | 19 |
| 67/R/AG/A/4 Agdell - Grass | 21 |
| 67/R/BN/A/5 Barnfield - Beans | 25 |
| 67/R/PG/A/6 Park Grass - Hay | 27 |
| 67/R/EX/A/7 Hoosfield Exhaustion Land - Fallow | 29 |
| 67/R/EGC/A/8 Rothamsted Garden - Clover | 31 |
| 67/S/SA/A/9 Saxmundham - Rotation 1 | 33 |
| 67/S/SB/A/10 Saxmundham - Rotation 2 | 37 |
| Rotation Experiments | 39 |
| 67/R/HIA/B/1 and 67/R/FLA/B/1 Ley and Arable Rotations | 39 |
| 67/R/B/2 and 67/W/B/2 Reference Plots (Era, Erg, Wera, Werf) | 55 |
| 67/W/WGM/B/3 Green Manuring | 65 |
| 67/W/WLA/B/4 Ley and Arable Rotations | 67 |
| 67/W/WMG/B/5 Market Garden Soil | 79 |
| 67/R/RP/B/6 Residual Phosphate Rotation | 95 |
| 67/R/CW/B/7 Cultivation-weedkiller Rotation | 99 |
| 67/W/WCW/B/8 Cultivation-weedkiller Rotation | 105 |
| 67/W/WIC/B/9 Intensive Cereals | 109 |
| Crop Sequence Experiments - Crops in 1967 | 115 |
| 67/R/LM/C/1 K, Mg and Na - Barley | 115 |
| 67/R/IB/C/2 Intensive Barley Growing - Cereals | 121 |
| 67/R/LL/C/3 and 67/W/WLL/C/3 Long-term Liming - Barley | 125 |
| 67/R/AF/C/4 Levels of N and K - Grass 10th Year | 129 |
| 67/R/AQ/C/5 Cereal Disease Reference Plots - Wheat | 133 |
| 67/R/AZ/C/6 Row Spacing N and Paraquat - Lucerne 4th Year | 135 |
| 67/R/IR/C/7 Irrigation - Beans and Barley | 141 |
| 67/W/WEAH/C/8 Soil Structure 2 Woburn - Early Carrots | 145 |
| 67/R/EPG/C/9 N P K - Old Grass (Park Grass Plot 5 Microplots) | 147 |
| 67/R/EPG/C/10 N P K and Cutting - Old Grass (Park Grass Plot 6 Microplots) | 157 |
| 67/R/BH/C/11 Sod Seeding and Pests - Winter Wheat | 159 |
| 67/R/BJ/C/12 Intensive Winter Wheat - Winter Barley | 161 |
| 67/R/BP/C/13 Legumes and Barley - Barley | 163 |
| 67/R/BQ/C/14 Previous Crops and N for Barley 1965-67 - Barley | 167 |
| 67/R/BY/C/15 Previous Crops and N for Barley 1966-67 - Barley | 169 |
| 67/R/EQ/C/16 Rate of Action of P Fertilisers 1965-67 - Ryegrass | 173 |
| 67/R/ER/C/17 Rate of Action of P Fertilisers 1966-67 - Barley and Ryegrass | 175 |
| 67/R/EBR/C/18 and 67/R/EBS/C/18 Formalin and N - 2 Sites - Winter Wheat | 177 |
| 67/W/WEBO/C/19 Fumigants - Barley | 181 |
| 67/R/BZ/C/20 Lucerne Virus Control - Lucerne and Lucerne/COCKSFOOT 3rd Year | 185 |
| 67/R/CA/C/21 Levels and Forms of N for Beans - Winter Wheat | 189 |
| 67/R/ECC/C/22 and 67/W/WECD/C/22 Dd and Dazomet - Spring Wheat | 191 |
| 67/S/SC/C/23 Intensive Wheat - Winter Wheat | 195 |
| 67/W/WOM/C/24 Organic Manuring - Potatoes and Grass | 197 |
| 67/W/WCE/C/25 Irrigation and Eelworm - Potatoes | 201 |
| 67/W/WBW/C/26 Direct Seeding - Spring Wheat | 205 |
| 67/R/CU/C/27 Legumes and Barley - Various Crops | 207 |
| 67/R/CK/C/28 and 67/W/WCN/C/28 Potato Haulms - Potatoes | 211 |
| 67/R/EA/C/29 Soil Sterilants - Winter Wheat | 215 |
| 67/R/EZ/C/30 N and Growth Regulators - Beans | 217 |
| 67/R/EAA/C/31 Formalin and N - Grasses | 219 |
| 67/R/EAB/C/32 Ibdu - Grass | 223 |
| 67/R/EAT/C/33 N and 67/W/WEAQ/C/33 N - Fixation - Lucerne and Grass | 227 |
| 67/W/WEAM/C/34 Placement of Fumigant | 237 |
| 67/S/SAX/SS/1/C/35 Soil Sterilization | 239 |
| 67/R/CJ/C/36 Levels and Placement of N - Spring Beans | 241 |
| 67/R/EB/C/37 Chemical Control of Take-all - Winter Wheat | 243 |
| 67/R/EAV/C/38 Stimulated Grazing | 245 |
| 67/W/WCL/C/39 Levels of N - Spring Beans | 253 |
| 67/W/WCM/C/40 Ploughsole Dd - Sugar Beet | 255 |
| 67/W/WECG/C/41 Cereal Cyst Nematode - Barley and Spring Wheat | 259 |
| 67/W/WEC/C/42 Nematode Resistant Barley - Barley - Pathogen Infested Site | 261 |
| 67/W/WEAU/C/43 Nematode Resistant Barley - Barley - Pathogen Free Site | 263 |
| 67/S/SAX/B/1/C/44 Formalin N and Lime - Barley | 265 |
| 67/S/SAX/RCL/1/C/45 Phosphate and Potash - Red Clover | 269 |
| 67/S/SAX/LU/1/C/46 Phosphate and Potash - Lucerne | 271 |
| 67/S/SAX/G/1/C/47 N and Cutting - Grass | 273 |
| Annual Experiments | 275 |
| 67/R/RW101/DA/1 Winter Wheat - Seed Rates, Methods of Sowing and Bulb Fly | 275 |
| 67/R/RW201/DA/2 Winter Wheat - Ccc and Eyespot | 277 |
| 67/R/RW301/DA/3 Winter Wheat - Ccc | 279 |
| 67/R/RW401/DA/4 Winter Wheat - Spun and Drilled Seed | 281 |
| 67/R/RW512/DA/5 Spring Wheat - Comparison of Combines | 283 |
| 67/R/RW601/DA/6 Spring Wheat - Effect of Gaps | 285 |
| 67/R/RW701/DA/7 Spring Wheat - Ccc | 287 |
| 67/R/RW801/DA/8 and 67/W/WW301/DA/8 Spring Wheat - Anhydrous Ammonia | 289 |
| 67/W/WW101/DA/9 Spring Wheat - Ccc and Irrigation | 293 |
| 67/W/WW201/DA/10 Spring Wheat - Sowing Dates and N | 297 |
| 67/R/BG1/DA/11 Winter Wheat - Sowing Date and Bulb Fly | 299 |
| 67/R/RB101/DB/1 Barley - Spun and Drilled Seed | 301 |
| 67/R/RB301/DB/3 Barley - Spraying and Wheelmarks | 303 |
| 67/R/RB201/DB/2 Barley - Comparison of Combines | 307 |
| 67/R/RBE/101/DC/1 Spring Beans - Rhizobium Strains | 309 |
| 67/R/RP2/1/DD/1 Potatoes - Effect of Gaps | 311 |
| 67/R/RP3/1/DD/2 Potatoes - Oospora (Skin Spots) | 313 |
| 67/R/RP4/1/DD/3 Potatoes - Oospora (Dead Eyes) | 317 |
| 67/R/RP5/1/DD/4 Potatoes - Rhizoctonia | 319 |
| 67/R/RP6/1/DD/5 Potatoes - Gangrene | 321 |
| 67/R/RP7/1/DD/6 Potatoes - Rhizoctonia and Storage | 323 |
| 67/R/RP8/1/DD/7 Potatoes - Oospora Free Seed | 327 |
| 67/R/RP9/1/DD/8 Potatoes - Blight and Aphid Attack | 329 |
| 67/R/RP10/1/DD/9 and 67/W/WP1/1/DD/9 Potatoes - Chitting and Scab | 331 |
| 67/R/RP12/1/DD/11 and 67/R/RP12/21/DD/11 Potatoes - Transmission of Scab - 2 Sites | 333 |
| 67/R/RP11/1/DD/10 Potatoes - Varieties N and Scab | 335 |
| 67/S/DE/1 Sugar Beet - Soil Compaction | 337 |
| 67/R/RG101/DF/1 Grass - Anhydrous Ammonia | 341 |
| 67/R/RG201/DF/2 Grass - N and Damage | 345 |
| 67/R/RRA101/DG/1 Oilseed Rape - Row Spacing, Seed Rate and N | 351 |
| Miscellaneous Data | 355 |
| 67/E/1 Meteorological Readings - Rothamsted | 355 |
| 67/E/1 Meteorological Readings - Woburn | 356 |
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