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