Carbon-Hydrogen-Oxygen-Nitrogen-Phosphorus-Potassium Soil Macronutrients

Nutrients Macronutrients Micronutrients Needed in larger quantities Needed in smaller quantities

Non-Fertilizer Nutrients Cannot be supplied in a fertilizer Come from Water & Air (H2O & CO2) Carbon Hydrogen Oxygen

Primary Macronutrients Nitrogen Phosphorus Potassium Complete fertilizer must contain all 3

Secondary Macronutrients Calcium Magnesium Sulfur

Nitrogen Encourages Growth Gives plants a dark green color Deficiency: - Plant turns lighter green - Yellowing leaves - Slow growth

Phosphorus Root Development Encourages Flowering Improves Winter Hardiness Deficiency Purplish coloration to leaves Stunted Growth

Potassium Increases disease resistance Thickens cell walls Aids in the transport of food in the phloem Deficiency Yellowing, death of tissue at the tips.