Soil Testing Lab. Purpose You will determine: 1.Soil composition 2.Soil pH 3.Soil Macronutrients.

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Presentation transcript:

Soil Testing Lab

Purpose You will determine: 1.Soil composition 2.Soil pH 3.Soil Macronutrients

Key Concepts Macronutrients: Nitrate, Potassium, and Phosphate  needed in large amounts

Key Concepts pH Scale: 0-6  acid, 7 neutral, 8-14  base Lime (Calcium Carbonate) added to decrease acidity.

Key Concepts Soil Texture Chart determines soil composition.

Procedure Pt 1: Soil Composition 1.Dry out soil on paper towel, remove twigs and leaves. 2.Get 20 mL of soil and place in 50 mL grad. Cylinder. 3.Add water until at 40 mL mark. 4.Cover top with wrap, invert mucho! 5.Let sit 6.Determine volume of each layer: clay, silt, and sand.

Procedure Pt 2 and 3: Soil pH and Macronutrients Follow instruction in soil test kit to get soil pH, NO 3, PO 4, and K. Record data! Throw away when done [not down the sink].