خيارات البحث
النتائج 181 - 190 من 233
Growth and activity of mycorrhizas in connection to nutrients, water and oxygen in soil. 2: Growth of plants and mycelia in the microcosms
1994
Kottke, I. (Tuebingen Univ. (Germany). Botanisches Inst., Spezielle Botanik und Mykologie) | Leontovykova, J.
Climatic variation and growth of Norway spruce (Picea abies (L.) Karst.), Silver fir (Abies alba Mill.) and European beech (Fagus silvatica L.) in Southwestern Germany
1994
Kahle, H.P. (Freiburg Univ. (Germany). Forstwissenschaftliche Fakultaet. Inst. fuer Waldwachstum) | Hahn, D. | Spiecker, H.
Diagnosis of damage to Norway spruce (Picea abies) and silver fir (Abies alba) through visible and biochemical criteria. A comparison of both diagnostic methods on permanent-observation sites in Baden-Wuerttemberg
1994
Schmitt, V. (Mainz Univ. (Germany). Inst. fuer Allgemeine Botanik) | Wild, A.
The effect of liming and Mg-fertilization on uptake, transport and final use of calcium and magnesium in conifers. 2: Significance of internal and external factors influencing the Ca- and Mg-dynamics in Norway spruce trees
1994
Tuerk, S. (Freiburg Univ. (Germany). Inst. fuer Forstbotanik und Baumphysiologie) | Guelpen, M. | Fink, S.
Project ARINUS: 8. Distribution and nutritional status of fine roots following experimental treatments
1994
Raspe, S. (Freiburg Univ. (Germany). Inst. fuer Bodenkunde und Waldernaehrungslehre) | Feger, K.H. | Zoettl, H.W.
The yellowing process and its prevention by artificial shading
1994
Siefermann-Harms, D. (Karlsruhe Univ. (Germany). Botanisches Inst.) | Weinmann, C. | Schneckenburger, H. | Heumann, H.G. | Seidel, A.
The pollution of lakes and reservoirs | Survey of the state of world lakes
1994
Clarke, Robin
Irrigated agriculture and environmental pollution
1994
Dinar, Ariel | Howitt, Richard E. | Zilberman, David
Sulphur emission from large point sources in Europe. 2. ed.
1994
Barrett M. | Protheroe R.
Energy & pollution control opportunities to the year 2000 | Energy and pollution control opportunities to the year 2000
1994
Jackson, Marilyn
