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Directors Report of the Experimental Results for 1946
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acid Agric alginate ammonia antibiotic appeared Appl applied autoclaved azobenzene BEWLEY Biol blotchy Carnation caterpillars cent Cheshunt chloropicrin Chron CM CM colour compounds concentration containing cucumber culture deficiency deposited Didymella Disease ecdysis eelworm effect experiments females flies flowers foliage fruit fungi Fungicides fungus Gardeners given in Table glasshouse Glasshouse Crops growth hoof and horn Hort incubation infected inoculated insecticides instar investigation isolated larvae leaf leaflets leaves lesions lycopersici males manure method mites Mosaic moths nitrate nitrification nitrogen normal nursery nutrient observed obtained OWEN parathion patulum period phosphate potash potassium pots production puparia red spider Red Spider Mite rhizosphere roots samples seed showed soluble solution SPEYER spores sprayed steamed plots steamed soil stem sterilized straw sulphate superphosphate surface symptoms temperature tests Tobacco Mosaic Virus tomato plants tomato seedlings U/F ratio unsteamed urea-formaldehyde variety virus weeks yield