Chapter 9 Nutrients; Botany

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What is a nutrient?
is a substance needed for plant growth
- ex) water
- materials from soil
Mineral

-inorganic chemical

-found in soil

ex) Iron (Fe)
Ion

Charged particle

-positive or negatively charged

ex) Nitrate ion NO3
Source of nutrients for plants (3)

-soil

-water

-air
Major Nutrients in Soil (3)

- Nitrogen

- Phosphorous

- Potassium
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
Essential nutrients

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)

-Fe, Zn...
Whats in a fertilizer?

N:P:K

ex) 6:12:6, 6% N, 12% P, 6% K .
How do you apply the fertilizer? (3)

depends on...

-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

-cheaper

-doesnt smell

-may only have 3 nutrients (N, P, K )
(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