Plant and Soil · 1995 · 29 citations · 19 references
AgricultureAgronomyPlant SciencesPlant EcophysiologyPlant NutritionPlant PhysiologyNitrogen AssimilationNitrogen ManagementNitrogen NutritionNutrient Deficiency DiagnosisNutrient Deficiency ToleranceNutrient Stress PhysiologyFoliar Nitrogen NutritionLeaf Nitrogen ContentNitrogen Deficiency ToleranceNitrogen ToxicityNutrient Stress Diagnosis
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Soil Testing and Plant Analysis
P. W. Arnold · Geoderma · 1974 · 918 citations