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Ailsa Craig average barrow Bone Flour bone meal bone-meal border carbolic acid carbon dioxide Cent Cheshunt Comet Complete Artificials less corms cresylic acid crop cucumber houses cyanide damping diseased plants dung effect eggs Experimental experiments foliage Formaldehyde fruit fumigation fungi fungus gallons glasshouses growers growth hoofs Improved Ailsa Craig inches increase infected inoculated July June killed Kondine Red large number Lea Valley leaf leaves lime loam loam and dung manurial treatment Manx Marvel Market Garden Industries Mulch naphthalene nitrogen obtained Paris green pest Phosphates pipes plots potash pots red spider roots season seedlings Sept Series spider spraying square yard stable manure Station Steam stem sterilised straw manure sulphate of potash superphosphate Tabic Table temperature tomato tomato houses tomato plants Tons per Acre top dressings Total untreated vapour Variety Verticillium wilt woodlice woodlouse yield