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INTRODUCTION by G D Holmes Director of Research
WORK CARRIED OUT BY FORESTRY COMMISSION
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acre Alice Holt Allerston annosus aphids application assessment B.Sc basal area beneﬁt Broxa cent Clocaenog compared conﬁned conﬁrm Corsican pine crops damage dazomet deﬁciency dicamba differences double mouldboard Douglas ﬁr drain drainage effect Enmag experiments fertiliser ﬁeld ﬁrst ﬁve foliage Forest Hampshire Forestry Commission germination grafting Grand ﬁr growing season hectare height growth increase infection inﬂuence Inverness-shire investigation Kennington kg/ha Kielder Forest Kirkcudbrightshire lb/acre levels Lodgepole pine methods mouldboard ploughing needle nitrogen Norway spruce nurseries peat phosphate pine and Sitka planting PLATE plots potassic superphosphate potassium production provenances Radnor Forest Report Research root samples Scotland Scots pine Section seed showed signiﬁcant Silviculture Sitka spruce soil South species sprayed stumps sulphate superphosphate survival Table Thetford Thetford Chase timber transplants treatment trees trials tubed seedlings Wales Wareham Wareham Forest weed control Western hemlock winter wood year’s Yield Class