| Yields of the Field Experiments 1980 | 1 |
| Contents | 3 |
| Conventions | 7 |
| Harvest Areas for Cereals | 8 |
| 80/R/BK/1 Broadbalk | 9 |
| 80/R/HB/2 Hoosfield | 14 |
| 80/R/WF/3 Wheat and Fallow | 18 |
| 80/R/EX/4 Exhaustion Land | 19 |
| 80/R/PG/5 Park Grass | 21 |
| 80/R/AG/6 Agdell | 26 |
| 80/R/BN/7 Barnfield | 30 |
| 80/R/GC/8 Garden Clover | 33 |
| 80/S/RN/1 Rotation I | 35 |
| 80/S/RN/2 Rotation II | 42 |
| 80/R/RN/1 and 80/R/RN/2 Ley Arable | 46 |
| 80/W/RN/3 Ley/ARABLE | 57 |
| 80/W/RN/4 Market Garden | 63 |
| 80/R/RN/5 Arable Reference Plots | 64 |
| 80/W/RN/6 Arable Reference Plots | 69 |
| 80/R/RN/7 Residual Phosphate | 76 |
| 80/R/RN/8 Cultivation/WEEDKILLER | 80 |
| 80/W/RN/12 Organic Manuring | 83 |
| 80/W/RN/13 Intensive Cereals | 88 |
| 80/W/RN/14 Long Term Phosphate | 92 |
| 80/W/RN/16 Effects of Deep Pk | 96 |
| 80/R/CS/10 and 80/W/CS/10 Long Term Liming | 98 |
| 80/W/CS/11 Soil Structure | 99 |
| 80/R/CS/13 N Levels to Old Grass | 101 |
| 80/W/CS/34 Nematicides in Crop Sequence | 105 |
| 80/W/CS/35 Nematicides Dosage | 112 |
| 80/W/CS/66 Dazomet and Nitrogen | 117 |
| 80/W/CS/99 Effects of Breaks on Take -all | 119 |
| 80/R/CS/130 Effects of Earthworm Inoculation | 122 |
| 80/R/CS/133 Control of Pathogens | 125 |
| 80/R/CS/140 Chemical Reference Plots | 127 |
| 80/R/CS/165 Sclerotinia Control | 131 |
| 80/W/CS/174 Sowing Dates and Ccn | 136 |
| 80/R/CS/200 and 80/W/CS/200 Factors Affecting Yield | 145 |
| 80/R/CS/202 Effects of Phialophora | 162 |
| 80/R/CS/203 Species Mixtures and Phialophora | 164 |
| 80/R/CS/211 Factors Affecting Eyespot | 166 |
| 80/R/CS/212 Seasonal Effects of Take-all | 170 |
| 80/R/CS/216 and 80/W/CS/216 Effects of Subsoiling & Deep Pk | 172 |
| 80/R/CS/230 Stubble Treatment and Light Leaf Spot | 175 |
| 80/W/CS/239 Late N | 177 |
| 80/R/CS/240 Effects of Mycorrhiza on Response to P | 179 |
| 80/W/CS/245 Minimum Cultivation and Deep Pk | 181 |
| 80/R/CS/246 Effects of Subsoiling & Deep Pk | 186 |
| 80/R/CS/247 Organic Matter and Earthworm Inoculation | 188 |
| 80/R/CS/248 Direct Drilling and Slug Control | 190 |
| 80/R/CS/250 Control of Cephalosporium | 192 |
| 80/W/CS/253 Late N | 194 |
| 80/S/CS/1 Fungicides, N and Growth Regulator | 197 |
| 80/R/WW/1 and 80/W/WW/1 Winter Wheat Varieties and N | 202 |
| 80/R/WW/2 and 80/W/WW/2 Winter Wheat Aqueous N and Nitrification Inhibitors | 207 |
| 80/R/WW/3 Winter Wheat Factors Limiting Yield | 210 |
| 80/W/WW/3 Winter Wheat Growth and Yield on a Contrasted Site | 224 |
| 80/R/WW/4 Winter Wheat Seed and Divided N Dressings | 229 |
| 80/W/WW/4 Winter Wheat Nematicides at Sowing | 231 |
| 80/R/WW/5 Winter Wheat Integrated Pest Control | 234 |
| 80/R/WW/6 Winter Wheat Weedkillers and Pests | 236 |
| 80/R/WW/7 Winter Wheat Fungicides and Soil-borne Diseases | 238 |
| 80/R/WW/8 Winter Wheat Predators and Polythene Barriers | 240 |
| 80/S/WW/1 Winter Wheat Factors Affecting Yield | 242 |
| 80/R/WS/1 Spring Wheat Fungicides and Alternaria | 248 |
| 80/R/B/1 Winter Barley Rhynchosporium Control in a Serially Balanced Design | 251 |
| 80/W/B/1 Winter & Spring Barley Mildew Sensitivity to Ethirimol | 253 |
| 80/R/B/2 Winter Barley Sowing Dates and Pathogen Control | 257 |
| 80/R/B/3 Winter Barley Dates of Sowing, N and Growth Regulator | 261 |
| 80/R/B/7 and 80/W/B/7 Spring Barley Varieties, N and Aphicide | 266 |
| 80/R/B/8 and 80/W/B/8 Spring Barley Physiological Study on Contrasted Sites | 269 |
| 80/R/B/9 Spring Barley Controlled Drop Application of Tridemorph | 272 |
| 80/R/B/14 Spring Barley Sowing Dates and Aphicides | 274 |
| 80/R/O/1 Spring Oats Varieties and Stem Nematode | 276 |
| 80/R/BE/1 Winter Beans Fungicides | 278 |
| 80/R/BE/2 Winter Beans Control of Sitona | 280 |
| 80/R/BE/4 Spring Beans Precision Sowing | 281 |
| 80/R/BE/5 Spring Beans Effects of Pest and Pathogen Control | 283 |
| 80/R/BE/6 Spring Beans Control of Sitona | 285 |
| 80/R/BE/7 Spring Beans Pyrethroids and Sitona | 287 |
| 80/R/BE/9 Spring Beans Fungicides | 288 |
| 80/R/BE/10 Spring Beans Rates and Times of Applying Entomorphthora | 290 |
| 80/R/BE/11 Spring Beans Species of Entomophthora | 292 |
| 80/R/BE/12 Spring Beans Varieties | 294 |
| 80/R/BE/13 Spring Beans Foliar Nutrition | 295 |
| 80/R/BE/16 Spring Beans Vicia Cryptic Virus | 297 |
| 80/R/BB/1 Broad Beans Vicia Cryptic Virus | 299 |
| 80/R/RA/1 Winter Oilseed Rape Fungicides | 301 |
| 80/R/RA/2 Winter Oilseed Rape Stubble Treatment & Phoma | 303 |
| 80/R/PE/1 and 80/W/PE/1 Peas Control of Pathogens | 305 |
| 80/R/PE/2 Peas Control of Sitona | 314 |
| 80/R/FE/1 Fenugreek N and Rhizobium | 316 |
| 80/W/PH/1 Phaseolus Rhizobium Inoculation Study | 318 |
| 80/W/PH/2 Phaseolus Rhizobium Strains | 320 |
| 80/R/MA/1 Forage Maize Rates & Times of N | 322 |
| 80/W/MA/1 Maize Effects of Heterodera Avenae | 324 |
| 80/R/P/4 Potatoes Effects of Spacing and Lodging | 326 |
| 80/W/P/5 Potatoes Varieties and Potato Cyst Nematode | 329 |
| 80/R/P/6 Potatoes Seed Treatment and Tuber Size | 331 |
| 80/R/P/7 Potatoes Varieties and Times of Applying Fungicides | 333 |
| 80/R/G/1 Grass Liquid Fertiliser and Nitrification Inhibitors | 335 |
| 80/E/1 Meteorological Records 1980 - Rothamsted | 339 |
| 80/E/1 Meteorological Records 1980 - Woburn | 340 |
| Conversion Factors | 341 |
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