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Forestry Commission (UK government department responsible for protection and expansion of Britain's forests and woodlands.) Elwes, Henry John, and Henry, Augustine, 1906 The trees of Great Britain & Ireland BHL Monograph.Includes rare introduced trees.Seven volumes and seven volumes of excellent black and white plates.
The grub population consists mainly of first instars in early- to mid-August, second instars by early September, and third instars by mid-September to early October. In frost zones, the grubs feed until November, then move deeper into the soil. In frost-free areas, the larva will feed all winter. Vigorous feeding occurs from March through May.
Holotrichia is a genus of beetle in the family Scarabaeidae, which are well known as "chafer beetles" or "white-grubs" for their white larvae that are found under the soil where they feed on the roots of plants.
In 2022, the UK produced 3,145,000 cubic metres of sawn wood, 3,466,000 cubic metres of wood-based panels and 3,462,000 tonnes of paper and paperboard. The UK does not produce enough timber to satisfy domestic demand, and the country imports 80% of its timber and paper from abroad, as the world's second largest timber importer after China. [33]
Lists of the plant species found in Ireland can be found at Irish Species Register The lists on this site are based on these "Key references" Scannell, M.J.P. & Synnott, D.M. (1987). Census catalogue of the flora of Ireland.
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The larvae, known as "chafer grubs" or "white grubs", hatch four to six weeks after being laid as eggs. They feed on plant roots, for instance potato roots. The grubs develop in the earth for three to four years, in colder climates even five years, and grow continually to a size of about 4–5 cm, before they pupate in early autumn and develop ...
Around 96 per cent of pine trees and 70 per cent of juniper shrubs revealed blue rings from 1902 and 84 per cent of trees and 36 per cent of shrubs from 1877. “In general, we found more blue ...