10 treff

soils nitrogen content
Soil nitrogen
edited by W.V. Bartholomew and Francis E....
Bok Engelsk 1965 · Vis mer
Nitrogen efficiency in agricultural soils : a Seminar on Nitrogen Efficiency in Agricultural Soils and the Efficient Use of Fertilizer Nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research
Seminar on Nitrogen Efficiency in Agricultural Soils and the Efficient Use of Fertilizer Nitrogen
Bok Engelsk 1988 · Vis mer
Studies on nitrogen mobilisation in forest soils = : Studier över kvävemobiliseringen i skogsjord
by Carl Olof Tamm and Anna Pettersson
Bok Engelsk 1969 · Vis mer
Soil nitrogen as fertilizer or pollutant : proceedings and report of a research coordination meeting
organizaed by the Joint FAO/IAEA Division...
Bok Engelsk 1980 · Vis mer
Field measurement of dinitrogen fixation and denitrification : proceedings of a symposium sponsored by Divisions S-2, S-3, and S-4 of the Soil Science Society of America in Washington, DC, 15 Aug. 1983
editors, R. D. Hauck and R. W. Weaver
Bok Engelsk 1986 · Vis mer
Nitrogen losses and surface run-off from landspreading of manures : proceedings of a workshop in the EEC Programme of Coordination of Research on Effluents from Livestock, held at the Agricultural Institute, Johnstown Castle Research Centre, Wexford, Ireland, May 20-22, 1980
sponsored by the Commission of the Europe...
Bok Engelsk 1981 · Vis mer
Nitrogen turnover in the soil-crop system : modelling of biological transformations, transport of nitrogen and nitrogen use efficiency : proceedings of a workshop held at the Institute for Soil Fertility Research, Haren, the Netherlands, 5-6 June 1990
edited by J.J.R. Groot, P. de Willigen, E...
Bok Engelsk 1991 · Vis mer
Zur Ökologie insbesondere Stickstoff-Versorgung subalpiner und alpiner Pflanzengesellschaften im Naturschutzgebiet Schachen (Wettersteingebirge)
von Helmut Rehder
Bok Tysk 1970 · Vis mer
Stickstoff-Düngungseinflüsse von Intensiv-Grünland auf Streu- und Moorwiesen
von Karin Christine Boller-Elmer
Bok Tysk 1977 · Vis mer
Der Stickstoff : seine Bedeutung für die Landwirtschaft und die Ernährung der Welt
unter Mitwirkung von O. Balz ... [et al.]...
Bok Tysk 1961 · Vis mer