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Résultats 301-310 de 373
Metal-metal interactions in biological systems. Part 4. Steinernema carpocapsae (Steinernematidae) and Heterorhabditis bacteriophora (Heterorhabditidae) entomopathogenic nematodes
1997
Jaworska, M. (Hugon Kollataj Academy of Agriculture, Cracow (Poland). Dept. of Entomology) | Gorczyca, A. | Sepiol, J. | Szeliga, E. | Tomasik, P.
Effect of metal ions on the entomopathogenic nematode Heterorhabditis bacteriophora poinar (Nematoda: Heterorhabditidae) under laboratory conditions
1997
Jaworska, M. (Hugon Kollataj Academy of Agriculture, Cracow (Poland). Dept. of Entomology) | Gorczyca, A. | Sepiol, J. | Tomasik, P.
The accumulation of arsenic, bromine and iodine in needles of Norway spruce (Picea abies [L.] Karst.) at sites with low pollution
1997
Wyttenbach, A. (Paul Scherrer Inst., Villigen (Switzerland).) | Bajo, S. | Furrer, V. | Langenauer, M. | Tobler, L.
Sulphur and heavy metal concentrations in Scots pine bark in northern Finland and the Kola Peninsula
1997
Poikolainen, J. (Finnish Forest Research Inst., Muhos (Finland). Muhos Research Station)
Variations in sulphur and nitrogen foliar concentration of deciduous and conifers vegetation in Slovakia
1997
Mankovska, B. (Forest Research Inst., Zvolen (Slovak Republic).)
Relationship between sugar maple decline and corresponding chemical changes in the stem tissue
1997
Mohamed, H.K. (Toronto Univ., Toronto, Ont. (Canada). Faculty of Forestry) | Pathak, S. | Roy, D.N. | Hutchinson, T.C. | McLaughlin, D.L. | Kinch, J.C.
Tree bark as a bioindicator of air pollution in Navarra, Spain
1997
Santamaria, J.M. (Navarra Univ., Pamplona (Spain). Dept. of Chemistry and Soil Science) | Martin, A.
Possibilities for increased carbon sequestration through the implementation of rational forest management in Russia
1997
Shvidenko, A. (International Inst. for Applied Systems Analysis, Laxenburg (Austria).) | Nilsson, S. | Roshkov, V.
Long-term changes in forest soil acidity in Pennsylvania, U.S.A.
1997
Drohan, J.R. (Pennsylvania State Univ., University Park, PA (USA).) | Sharpe, W.E.
Ion leaching before and after clear-cutting in a Norway spruce stand: effects of long-term application of ammonium nitrate and superphosphate
1997
Berden, M. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Soil Sciences) | Nilsson, S.I. | Nyman, P.
