Plant and Soil · 1950 · 20 citations · 3 references
AgricultureEarth SciencesSoil SciencesSoil ChemistrySoil FertilitySoil ScienceCopper DeficiencyCopper NutritionMicronutrient ChemistryNutrient AvailabilitySoil CompositionSoil Nutrient AvailabilityCopper AvailabilityCopper Resources
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A RAPID APPROXIMATE METHOD FOR DETERMINING SOIL ORGANIC MATTER
C. J. Schollenberger · Soil Science · 1927 · 134 citations
The availability and fixation of copper in Swedish soils
K. Lundblad, Olof Svanberg, Per Ekman · Plant and Soil · 1949 · 31 citations