The report of Forest Research for the year ending March 1951. The report includes:
Introduction
Summary of the year’s work
Part 1: Work carried out by the Forestry Commission staff:
– Forest tree seed investigations
– Experimental work in nurseries
– Natural regeneration of scots pine woods in the highlands
– Position of planting on ploughed heathland
– Provenance studies
– Work on afforestation problems in Scotland and northern England, 1950-51
– Oak and larch mixtures at the early pole stage
– Survey of plantations on open cast iron stone mining areas in the midlands
– Derelict woodland investigations
– Influence of shade on the height growth and habit of beech
– Climate and soil in relation to beech growth in Britain
– Chemical control of woody weed growth
– Effect of high pruning on bark-peeling costs in Douglas fir
– Forest genetics
– Persistence of late-flushing characters in Norway and Sitka spruce
– Poplars and poplar cultivation
– Studies of growth and yield
– Census of woodlands
– Tree diseases in Great Britain, 1950-51. A general review
– Forest entomology
– Machinery research
– Photography
– Library and documentation work
– Publications
Part 2: Research undertaken for the Forestry Commission by workers attached to universities and other institutions:
– Sub-committee on nutrition problems in forest nurseries—summary report on 1950 experiments
– Researches in soil mycology
– Influence of tree growth on soil profile development
– Mineral nutrient studies in heathland plantations
– Research into the physical and chemical properties of forest soils
– Soil faunal investigations
– Botanical studies of the variation in certain conifer species
– Investigations on fomes annosus in East Anglian pine plantations
– Effect of partial sterilisation on the fungal flora of an old forest nursery soil
– Megastigmus insects attacking conifer seeds
– Nesting of titmice in boxes, 1950