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Résultats 21-30 de 32
[Effects of fertilization on the chemical properties of [forest] soils]
1990
Sarman, J. (Vysoka Skola Zemedelska, Brno (CSFR). Lesnicka Fakulta)
Project ARINUS: 5. Element cycling in the control watersheds and fertilizer leading
1991
Brahmer, G. (Freiburg Univ. (Germany). Inst. fuer Bodenkunde und Waldernaehrungslehre) | Feger, K.H. | Zoettl, H.W.
Response of soil ciliates to fertilization in Black Forest spruce stands
1992
Lehle, E. (Ulm Univ. (Germany). Abt. Oekologie und Morphologie der Tiere) | Jans, W. | Funke, W.
Qualitative and quantitative dependence of the fructification of mycorrhizae fungi on artificial fertilization, immission and tree damage in spruce sites in the Black Forest
1986
Mueller, C. (Tuebingen Univ. (Germany, F.R.). Inst. fuer Biologie) | Oberwinkler, F.
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.
Emissions of N2O, NO and NO2 from soils of spruce stands in the Black Forest
1992
Papen, H. (Fraunhofer-Institut fuer Atmosphaerische Umweltforschung, Garmisch-Partenkirchen (Germany)) | Hermann, H. | Doersch, P. | Rennenberg, H.
Research site Freudenstadt
1990
Siefermann-Harms, D. (Kernforschungszentrum Karlsruhe (Germany, F.R.). Inst. fuer Genetik undToxikologie)
Project ARINUS: 4. Effects of Kieserite fertilization
1990
Feger, K.H. (Freiburg Univ. (Germany, F.R.). Inst. fuer Bodenkunde und Waldernaehrungslehre) | Zoettl, H.W. | Brahmer, G.
Comparative investigations of fine root system and the anatomy of mycorrhizae after dry stress and artificial fertilization
1986
Oberwinkler, F. (Tuebingen Univ. (Germany, F.R.). Inst. fuer Biologie) | Kottke, I. | Ritter, T. | Feil, W.
Evaluation of the sulfur budget of forest ecosystems (Black Forest) by means of stable sulfur isotope analysis. 1. Purpose, background and methods
1992
Giesemann, A. (Giessen Univ. (Germany). Inst. fuer Pflanzenoekologie) | Jaeger, H.J.
