Soil Properties Obj 5.01
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Transcript Soil Properties Obj 5.01
Objective 5.01Explain the role of
nutrients and
fertilizers.
Discuss
Horticulture soils
Soils
and growing media are made up of two
types of materials
Organic matter
Inorganic compounds
Dead
plant or animal tissue
contains carbon
usually has diseases or insects
Compost
bark-particles
too large to use in seed
germination media
mulch-used to cover soil to help hold
moisture and prevent weeds
straw
peat moss
Sphagnum
Sawdust-high
carbon to nitrogen ratio makes
nitrogen unavailable for plant use
Wood shavings- high carbon to nitrogen ratio
makes nitrogen unavailable for plant use
Do
not contain carbon
usually sterile
Soilless
media-artificial soil
Vermiculite-mica mineral matter used to
start seeds and cuttings, helps hold moisture,
has neutral pH
Perlite-natural volcanic material that helps
aeration and water-holding capacity
1.
2.
3.
4.
Sterile.
pH is neutral.
Disease and weed free.
It is good for starting disease sensitive
seeds
•
5.
6.
7.
Tomato
It is easy to control the nutrient content
Improves crop uniformity.
It is easy to create a horticulture soil for
particular plant needs.
1.
2.
Expensive
It is light weight
Materials
with a high carbon to nitrogen ratio
Sawdust
Wood shavings
Makes
nitrogen unavailable for plant use