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D. Jackson ; A. Dixon | 19961. The green spruce aphid Elatobium abietinum, was less active and more likely to feed when on mature rather than young needles of Sitka spruce. 2. Compared with survival on mature needles, survival of aphids on young needles was significantly r[...]article/chapitre/communication
N. Straw ; N. Fielding ; G. Green ; J. Price | 2002Defoliation of 3-year-old Sitka spruce (Picea sitchensis (Bona.) Carr.) by green spruce aphid (Elatobium abietinum (Walker)), in a field experiment in Hafren forest, Wales, resulted in significantly shorter shoots being produced in the upper can[...]article/chapitre/communication
C. Carter ; 16. IUFRO world congress ; C. Carter, - Editeur scientifique | 1977congrès/colloque
P. Smits, - Editeur scientifique ; OILB Organisation Internationale de Lutte Biologique, Dijon (FRA). SROP Section Régionale Ouest Paléarctique ; Meeting of the IOBC WPRS Working Group, 7. European meeting on "Capturing the potential of biological control" (1999/03/22-26; Vienna, AUS) | Dijon [FRA] : OILB/SROP Organisation Internationale de Lutte Biologique / Section Régionale Ouest Paléarctique | Bulletin OILB SROP (FRA) | 2000congrès/colloque
D. Bevan, - Editeur scientifique ; J. Stoakley, - Editeur scientifique ; IUFRO International Union of Forest Research Organization, Vienne (AUT) ; IUFRO Conference (1980/09/01-07; Dornoch, GBR) | Edinburgh [GBR] : Forestry Commission | 1985article/chapitre/communication