Physiological Basis for the Establishment of Hardy Forests: (Fiziologicheskoe Obosnovanie Sozdaniya Ustoichivykh Lesnykh Nasazhdenii).
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HISTORICAL OUTLINE OF FOREST CULTIVATION IN THE USSR
THE ROOT SYSTEMS OF TREE SPECIES
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absorbing roots absorption accessory species according Acer negundo Acer platanoides Acer tataricum active roots Agropyron air temperature amount ascending flow Azotobacter azotobacterin bacteria Buzuluk Buzuluk forest calculated Caragana arborescens cells chernozem climate cm depth compartment considerably counts per minute decrease determined diameter drought dry weight effect experiments fertilizer application foliar spray forest belts forestry Fraxinus excelsior gibberellin growing season growth hardiness hectare Hellriegel humus hyphae increase investigations Krasnoarmeisk labeled phosphorus lanceolata larch leaf leaves linden maple microorganisms mineral nutrients mixed cultures mixture mycorrhiza nitrogen nutrients oak seedlings occur organic period phosphobacterin physiologically active plantations pot trials potassium precipitation pure and mixed pure cultures radioactive phosphorus rhizosphere root excretions root grafts root systems rows sand seed shrubs soil application soil horizons soil layer soil moisture soil moisture content speed spruce stands stem steppe superphosphate tissues transpiration rate transport treatment tree species various Veliko-Anadol