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Résultats 251-260 de 329
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.
Fertilizer application in aid of plantation establishment in the savanna areas of Nigeria
1990
Kadeba, O. (Federal Univ. of Technology, Akure (Nigeria). Dept. of Forestry and Wood Technology)
Nutrient stress in young Scots pines suffering from needle loss in a dry heath forest
1990
Tikkanen, E. (Lapland Univ., Rovaniemi (Finland). Arctic Centre) | Raitio, H.
Bioelement content and biomass in Scots pine: effect of acidification and liming
1990
Popovic, B. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research)
Effects of calcined magnesite, magnesium hydroxide and "Geosan" on soil properties in declining spruce stands (NE Bavaria)
1990
Schaaf, W. (Bayreuth Univ. (Germany, F.R.). Inst. of Soil Science and Soil Geography) | Zech, W.
Correction of magnesium deficiency in a young stand of Norway spruce
1990
Monchaux, P. (Association Foret-Cellulose, Charrey-sur-Saone (France)) | Thivolle-Cazat, A.
Environmental pollution and control
1990
Vesilind, P. Aarne | Peirce, J. Jeffrey | Weiner, Ruth F.
[The state of transboundary air pollution: effects and control]
1990
Phosphorus removal from wastewater
1990
Bowker, Robert P. G. | Stensel, H. David
Contamination of ground water
1990
Barcelona, Michael J.