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16 plants Ailsa Craig attacked average bone-meal carbolic acid carbon dioxide Cent Cheshunt chrysalides Comet Complete Artificials less cresylic acid Crops in lbs cucumber cucumber houses cyanide diseased plants eelworm effect eggs experimental foliage Forced Growth Formaldehyde fruit fumigation fungi fungus gallons given glasshouse greenhouse growers grown hoofs Hot Water house acre inches increase infection inoculated July June Kondine Red Lea Valley leaf leaves lime loam and dung Manurial Experiments manurial treatment Mosaic disease moths Mulch Naphthalene nitrate of soda nitrogen obtained pest phosphates pipes plots pots roots season seed seedlings Sept Series set of 16 Sodium cyanide Soil Sterilisation spiders spores spraying square yard Station Steam stem Sterilisation sulphate of potash superphosphate Table temperature tomato tomato houses tomato plants Tons per Acre top dressings Total trade nurseries Untreated Variety Verticillium wilt woodlice woodlouse yield