خيارات البحث
النتائج 191 - 200 من 219
Physiological and biochemical investigations into the yellowing of spruce at higher altitudes. Pt. 5: Effects of combined stress at the Freudenstadt site and of single stress factors on components of the photosynthetic apparatus
1992
Siefermann-Harms, D. (Kernforschungszentrum Karlsruhe (Germany). Inst. fuer Genetik und Toxikologie) | Steegborn, J.
Project ARINUS: 6. Nitrogen turnover and effects of the experimental treatment
1992
Feger, K.H. (Freiburg Univ. (Germany). Inst. fuer Bodenkunde und Waldernaehrungslehre) | Brahmer, G. | Zoettl, H.W.
Histological and histochemical investigations on the nutrient dynamics in forest trees with regard to the "New-type forest decline".5. Further results on the behaviour of calcium and magnesium in various tissues
1992
Fink, S. (Freiburg Univ. (Germany). Inst. fuer Forstbotanik und Baumphysiologie)
Experiment with exclusion of gaseous pollutants on spruce trees at Edelmannshof
1992
Evers, F.H. (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany)) | Hoyer, V. | Schnepf, M. | Seufert, G.
Flushing and growth of cloned Norway spruce (Picea abies (L.) Karst.) after water stress with different nutrition of magnesium
1992
Makkonen-Spiecker, K. (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany))
Climatic variation and growth of Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) in the Black Forest
1992
Spiecker, H. (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany))
Uptake and localization of nutritive and potentially toxic minerals in ectomykorrhizas of forest trees
1992
Kottke, I. (Tuebingen Univ. (Germany). Inst. fuer Botanik, Spezielle Botanik-Mykologie) | Oberwinkler, F.
Soil chemical results from the PEF-measuring plot "Schoellkopf"
1992
Wilpert, K. von (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany)) | Hildebrand, E.E.
Gas exchange and metabolite pools of the carbohydrate and energy metabolism in needles of spruce with different decline symptoms (diurnal and annual changes)
1992
Einig, W. (Tuebingen Univ. (Germany). Botanisches Inst. Abt. Physiologische Oekologie der Pflanzen) | Groschupp, C. | Zimmer-Rinderle, U. | Egger, B. | Hampp, R. | Lichtenthaler, H.K.
Air pollution control in Switzerland. Actual problems, expectations and demands on research
1992
Boehlen, B. (Bundesamt fuer Umwelt, Wald und Landschaft (BUWAL), Berne (Switzerland)) | Leutert, G.