Soil Science Society of America Journal · 1947 · 56 citations · 0 references
AgricultureAgronomyCrop SciencesCrop ProductionPlant NutritionSoil FertilityCrop Nutrient RequirementsCrop NutritionNitrogen NutritionNutrient AvailabilitySoil Nutrient AvailabilitySoil-plant Nutrient RelationsCrop YieldsLeaf Nitrogen ContentNitrogen To Phosphorus RatiosNutrient YieldPhosphorus RequirementPlant-available NitrogenPotassium Content