Hilgardia · 1953 · 18 citations · 2 references
AgricultureAgronomyPlant SciencesMicronutrient NutritionPlant NutritionPlant PhysiologyFoliar NutritionMineral NutritionNutrient AvailabilityPhosphorus NutritionRoot NutritionSoil Nutrient AvailabilityLeaf Magnesium AnalysisLeaf Nutrient AnalysisLeaf Potassium AnalysisNutrient Effects On GrowthPlant Micronutrient DeficiencyPlant Nutrient DeficiencyTree Growth MeasurementTree Growth Response
Various unusual leaf patterns appearing on olive trees, often associated with poor tree growth, may be due to a deficiency of one of the mineral-nutrient elements studied in this investigation—nitrogen, phosphorus, potassium, or magnesium. Results of a two-year sand-culture experiment are here presented by a series of leaf analyses, growth measurements of the trees, and color photographs of the leaf symptoms obtained.
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THE COLORIMETRIC DETERMINATION OF PHOSPHORUS
Cyrus H. Fiske, Y. Subbarow · Journal of Biological Chemistry · 1925 · 19.1K citations · Full text
The Association of Official Agricultural Chemists
H. W. Wiley · Science · 1901 · 2.3K citations