Function of Nutrients for Plant GrowthMacro - & Micronutrients

http://www.agriscience.msu.edu/2000/2030/2031/2031nutrients.htm

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Types of Nutrients Macronutrients – needed by the plant

in large amounts (ESSENTIAL) Micronutrients – needed in smaller

amounts but still needed by the plant.

Nitrogen Deficiency Symptoms

N - DeficiencyA. YellowB. Little growth

Phosphorus Deficiency Symptoms

Phosphorus (P) Deficiency:--purple stems and leaves

Potassium Deficiency Symptoms

Potassium (K) Deficiency:

Weak roots Brown margins

Potassium Deficiency

Iowa State University, http://www.ent.iastate.edu/imagegal/plantpath/corn/deficiency/ndeficiency.html

Reading the Fertilizer Label

1st Number Nitrogen (N) %

2nd Number Phosphorus (P)%

3rd Number Potassium (K)%

Fertilizer Calculations 50 Lbs of fertilizer marked 16-04-08 How many pounds of Nitrogen,

Phosphorus and Potassium does the bag contain?

Nitrogen .16 X 50 = 8.0 LbsPhosphorus .04 X 50 = 2.0 LbsPotassium .08X 50 = 4.0 Lbs

Fertilizer Calculations

25 lbs of fertilizer marked 34-06-12

How many pounds of Nitrogen, Phosphorus and Potassium does the bag contain?

Fertilizer CalculationsNitrogen .34 X 25 = 8.5 Lbs.

Phosphorus .06 X 25 = 1.5 Lbs.

Potassium .12 X 25 = 3 Lbs.