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What is a nutrient?
is a substance needed for plant growth
- ex) water
- materials from soil
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Mineral
-inorganic chemical
-found in soil
ex) Iron (Fe)
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Ion
Charged particle
-positive or negatively charged
ex) Nitrate ion NO3
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Source of nutrients for plants (3)
-soil
-water
-air
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Major Nutrients in Soil (3)
- Nitrogen
- Phosphorous
- Potassium
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Nutrients from air and water (3)
-Oxygen (oxygen gas in air and soil pores)
-Hydrogen ( from water H2O)
-Carbon (from carbon dioxide CO2)
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2 types of Essential nutrients
macronutrients and micronutrients
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Essential nutrients
has to have, needed for life
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(Essential nutrients) Macronutrients
- needed in large amounts
- -usually more plentiful
Ex) N, P, K, C, H, O, Ca, Mg, S
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(Essential nutrients) Micro nutrients
needed in small amounts (7)
-Fe, Zn...
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Whats in a fertilizer?
N:P:K
ex) 6:12:6, 6% N, 12% P, 6% K .
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How do you apply the fertilizer? (3)
depends on...
-time of year
-age of plant
-concentration (how much)
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2 types of fertilizers
inorganic and organic
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(types of fertilizers) Inorganic; Chemicals (5)
-powders, liquids, "sticks"
-easier to use
-cheaper
-doesnt smell
-may only have 3 nutrients (N, P, K )
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(types of fertilizers) Organic (5)
-from living things
-bulky
-smelly
-time-released
-can have all essential nutrients
ex) cow manure, bat guano, blood neal, sewage sludge
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