خيارات البحث
النتائج 131 - 140 من 329
[Studies on the seed production of Pinus contorta Dougl.]
1990
Kobliha, J. (Vysoka Skola Zemedelska, Brno (CSFR). Lesnicka Fakulta)
[Plant succession on clear cut areas and silvicultural consequences]
1990
Irrgang, S. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft)
[Forest protection measures in afforestation sites planted with tree species suitable for the conversion of stands of the Ore Mountains damaged by air pollution]
1990
Prien, S. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft) | Otto, L.F.
[The velocity of wind as additional factor contributing to damage in a Norway spruce area effected by SO2]
1990
Liebold, E. (Technische Univ. Dresden, Tharandt (Germany))
Vanadium: toxicity and accumulation by beans
1990
Kaplan, D.I. (Savannah River Ecology Lab., Aiken, SC (USA). Biogeochemistry Div.) | Adriano, D.C. | Carlson, C.L. | Sajwan, K.S.
Fertilization of declining conifer stands in the Vosges and in the french Ardennes
1990
Bonneau, M. (Center de Recherches Forestieres INRA, Champenoux (France)) | Landmann, G. | Nys, C.
Changes in soil properties and site productivity caused by red alder
1990
Cole, D.W. (Washington Univ., Seattle, WA (USA). Coll. of Forest Resources) | Compton, J. | Miegroet, H. van | Homann, P.
Effects of forest liming on the nutrient status of podzolic soils in Finland
1990
Derome, J. (Finnish Forest Research Inst., Vantaa (Finland). Dept. of Soil Science)
Dynamics of "acute yellowing" in spruce connected with Mg deficiency
1990
Kandler, O. (Munich Univ. (Germany, F.R.). Botanical Inst.) | Miller, W.
Effects of liming and fertilization on soil solution chemistry in North German forest ecosystems
1990
Matzner, E. (Goettingen Univ. (Germany, F.R.). Forschungszentrum Waldoekosysteme) | Meiwes, K.J.
