plant science. career areas forest careers are related to growing, managing, and harvesting trees...
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Plant Science
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Career Areas Forest careers are related to
growing, managing, and harvesting trees for wood and wood by-products
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Forest career examples Forester- is a service-oriented career
that helps with the science of growing trees
Forest ranger- finds employment primarily with the government to manage forests on state and federal lands but may also assist with fire prevention on private lands as well.
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Forest career examples Logging foreman- will supervise
a crew involved in the harvesting phase
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Career Areas Horticultural careers are as varied as the
industry itself
Floriculture careers are related to flower production and use
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Floriculture careers Floral designer- designs flowers for
florist or business Flower grower- produces flowers used
in floral design Greenhouse manager- manages the
production process for a flower grower
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Floriculture careers cont. Retail florist- floral business that
furnishes flowers to the general public
Wholesale florist- floral business that furnishes flowers and supplies to retail florist
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Landscaping and nursery careers Landscaping and nursery careers
are related to the use and production of plants for aesthetic purposes. Plants may be used around homes, businesses, parks, etc.
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Landscaping and nursery careers Greenskeeper- takes care of golf course
turf Landscaper- installs plants in various
locations Landscape architect- designs plans for
plant installation Nursery operator- grows trees and shrubs
needed for landscaping Turf farmer- grows turf grass for sale
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Plant Science TOOLS
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Tools used in the plant science industry A bush axe is used for clearing
undergrowth
http://soshel.home.mindspring.com/gsu/brushaxe/brushaxe.htm
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Tools used in the plant science industry A grafting tool is
used to prepare woody parts of two plants to be joined together Fruit stock grafting knife
http://www.frostproof.com/catalog/h64110.html
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Tools used in the plant science industry A planting bar is
a forestry tool used for setting out seedlings
http://www.itascagreenhouse.com/page22.html
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Tools used in the plant science industry
A pruning saw is used to saw limbs
http://www.stihlusa.com/handtools/PS40.html
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Tools used in the plant science industry A soil thermometer
is used to determine soil temperature
A soil tube is used to obtain a soil sample
http://homepages.ihug.co.nz/~crawshaw/itmidx1.htmhttp://www.keyaginc.com/toppage5.htm
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Tools used in the plant science industry Chain saws are
either electric or gasoline powered. Gasoline powered chain saws are used for cutting trees and large limbs
http://www.vannattabros.com/tools.html
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Tools used in the plant science industry Hand lopping
shears are used when pruning shrubs or trees to cut large branches in hard to reach places
http://www.frostproof.com/catalog/h33.html
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Tools used in the plant science industry Hedge shears are
used when trimming and shaping shrubbery into a continuous row or hedge
Pruning shears are used to cut small limbs when shaping shrubbery www.frostproof.com
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What do plants grow in?
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Types of plant growing media Soil is the top layer of
the Earth’s surface and is the primary medium for cultivated plants
Sphagnum moss is used for encouraging root growth under certain conditions
http://encarta.msn.com/find/Concise.asp?z=1&pg=2&ti=761576446
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Types of plant growing media Perlite is a volcanic glass material used for
starting new plants and in media mixes Vermiculite is a mineral mica-type material
used for starting plant seeds and cuttings and in media mixes
Peat moss is used in media mixes of various types
http://www.fafard.com/html/g-peat.html
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Amending the pH of Plant Growing Media
Improper soil/media pH will have the most impact on the availability of nutrients in the soil/media
Soil/media with high alkalinity are made more acidic by lowering the pH value with sulfur or aluminum sulfate
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Amending the pH of Plant Growing Media
Soil/media with a high acidic level is made more alkaline by raising the value with lime
Lime is usually applied as finely ground limestone that supplies both calcium and magnesium
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Fertilizers A complete fertilizer must contain the
three primary nutrients: nitrogen, phosphorus, and potassium
Fertilizers come in various forms, but most nutrients within a fertilizer must come in a liquid form (soluble) to be used by plants
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Fertilizers Organic fertilizers include animal
manures and compost made with plant or animal products. Some examples are: Dried and pulverized manures Bone meal (phosphorus is the primary
element) Soybean meal
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Fertilizers Organic fertilizers are usually slow
acting and long lasting forms of nitrogen but lacking in the other primary nutrients (except bone meal)
Inorganic fertilizers have a higher analysis of soluble nutrients that have been blended together for a specific purpose.
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Fertilizer applications Broadcasting or spreading evenly over the
entire surface is used on turf and home lawns Side-dressing is done by placing fertilizer in
bands about 8 inches from the row of growing plants
Foliar application is the spraying of fertilizer directly onto the leaves of plants, usually organic
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Roots: take in the nutrients and water from the soil Taproot: main root
of a plant and generally
Fibrous roots: thin, thread-like, usually without a primary root present
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Stem
Woody stems are tough and winter hardy. They often have
bark around them
Herbaceous stems are succulent, often green, and will not survive in cold climates
Supports the leaves, flowers, and fruit Two basic types of aboveground stems: woody
and herbaceous
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Stem modifications Tuber: underground stem enlarged for
storage of food
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Stem modifications Rhizome: underground stem, often has
buds which sprout to form new shoots
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Stem modifications Stolon: above ground stem, has buds
which sprout to form new shoots
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Stem modifications Bulb: underground
stem with fleshy leaves which store food, for example an onion
Corm: fleshy underground stem wit papery leaves, for example a gladiolus
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Leaves The leaf manufactures the food for the
plant by using light energy
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Leaves are useful for identification of the plant. The leaf edge (margin), shape, and arrangement are all important in plant identification
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Flowers The primary
function of flowers is the production of seed
A perfect flower contains all male and female parts
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Other Seed develops in
the female part of the flower (pistil)
The pistil then enlarges and becomes the fruit
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The photosynthesis process Photosynthesis is a series of processes in
which light energy is connected to chemical energy in the form of a simple sugar Chlorophyll and chloroplast are essential Plants used carbon dioxide to manufacture
food for plant and releases oxygen necessary for animal life at the same time
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The photosynthesis process The rate at which the
photosynthesis (food making) process occurs depends on and varies with light intensity, temperature, and concentration of carbon dioxide in the atmosphere
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The photosynthesis process A shortage of carbon dioxide causes a
low rate of photosynthesis An enclosed greenhouse can have a
shortage of carbon dioxide A carbon dioxide generator might be
used to correct a shortage of carbon dioxide in the greenhouse
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The photosynthesis process Low light hinders plant growth
A dark room reduces the rate of photosynthesis and plants will have stunted growth and yellow leaves
Plants adapt to various levels of light brightness (intensity) but all plants have a preferred range of light intensity
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The photosynthesis process Temperature affects the process of
photosynthesis The best rate of photosynthesis
occurs between 65-85 degrees Fahrenheit
Extremes of temperature can completely stop the process
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Parts of the Flower The male part is the stamen and consists of the:
Filament that supports the anther Anther that manufactures pollen Pollen that is the male reproductive cell
http://www.urbanext.uiuc.edu/gpe/case4/c4facts1a.html
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Parts of the Flower The female part is the pistil and consists of the :
Stigma that receives the pollen Style that is the connection to the ovary Ovary that contains the ovules (female reproductive
cells)
http://www.urbanext.uiuc.edu/gpe/case4/c4facts1a.html
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Parts of the Flower Petals are the colored
part of the flower that attract insects or other natural pollinators
Sepals function as a protection for the developing flower
http://www.urbanext.uiuc.edu/gpe/case4/c4facts1a.html
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Parts of the seed
http://www.netusa1.net/~gwmager/SeedLbl.html
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Parts of the seed Seed coat- protects the seed
Sometimes the seed coat is very hard and difficult to germinate
Horticulturalists assist germination by scarifying the seed coat or damaging the seed coat to promote germination
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Parts of the seed Endosperm- supplies food for the
germinating seed Embryo- is the young plant itself
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Propagation Increasing the number of a plant
species or reproduction of a species Sexual propagation is the use of a seed
for reproducing plantsOnly way to obtain new varieties and
increase hybrid vigorOften times is less expensive and quicker
than other methods
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Propagation Asexual propagation is the use of
a part or parts of a plant for reproducing plants Also called vegetative propagation The new plant is an exact
duplication of the parent plant
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Methods of asexual propagation Cuttings are vegetative parts that the
parent uses to regenerate itself. Some examples include leaf, root, and stem cuttings
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Air layering
http://aggie-horticulture.tamu.edu/extension/ornamentals/airlayer/airlayer.html
Layering is a method where the stem is encouraged to root while still attached to the parent plant. Some examples include: simple, tip, and air layering
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Methods of asexual propagation Division is a
method that divides or separates the main part of the plant into smaller parts
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T bud grafting
http://aggie-horticulture.tamu.edu/propagation/budding/budding.html
Grafting is a method that joins two plants together as they grow as one (T budding is most common)
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Methods of asexual propagation Tissue culture or
micro propagation is the use of a very small and actively growing part of the plant to produce a high number of new plants (cloning)
Micropropagationhttp://www.micropropagation.co.uk/
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THE END
http://www.feebleminds-gifs.com/ani6.html