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