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foreword by The Earl of Radnor
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1+0 Sitka spruce acid acres agricultural ammonium sulphate Ampthill average Bagley Basal basic slag blocks Boletus bracken Broadcast sowing bulky organic calcium calcium nitrate Calluna Calluna heathland Calluna raw humus cent chloropicrin compost conifers crop ectotrophic mycorrhizal effect estates experimental experiments extract factor fertilizer Forestry Commission formalin formalin drench forms fungi growth Harwood Dale heathland Height In Inches hoppus feet hopwaste compost Hymenomycetes increased Kennington Extension land logging manuring Mean ments mycorrhizal associations mycorrhizal Hymenomycetes Nagshead nitrate nitrogen Nltro-Chalk Norway spruce Number of plants nurseries nutrients Old Kennington organic manures partial sterilization phosphate phosphorus Plate potassium chloride private forestry production rate per sq.yd responses Ringwood Rothamsted samples sand sawmills Scots pine season seedbeds short roots SITKA SPRUCE SEEDLINGS soil species steam sulphur summer superphosphate Sweden Swedish Table timber tion tractor transplant beds Treatments applied trees Wareham wood woodlands