Falcon Invoice Discounting: Empowering Your Business Growth
DOC-20230731-WA0001..ppt
1. The Hydrolic (Water) Cycle
• Water is constantly moving
through the atmosphere and
into and out of the soil.
• Soil moisture is one portion
of the cycle which can be
controlled to the greatest
extent by affecting the soil.
2. Water Holding Capacity
•Soil property which represents the amount of
water a soil can retain after it has been
saturated by rain and downward movement
has ceased.
•Transpiration – the process by which water,
as a vapor, is lost by living plants.
•Evoporation
•Seepage
3. Water Holding Capacities of Soils
•The amount of water a soil can retain is
influenced by:
•Soil texture
•Soil structure
4. •Soil Texture
•The smaller the soil particles, the greater the soil’s
water holding capacity. Clay has more water
holding capacity than sand.
•Small soil particles (clay) have more small pores
or capillary spaces, so they have a higher water
holding capacity. Large soil particles (sand)
have fewer capillary spaces, therefore less ability
to hold water.
5. •Soil Structure
•A soil structure has a direct correlation to
the amount of water it can retain.
6.
7. Developing a Plan for Controlling Soil
Water
•Examples include:
•Mulch – material placed on soil to break
the fall of rain drops (preventing erosion),
prevent weeds from growing, or improve an
appearance of an area
•Strip Cropping – alternating strips of row
crops with strips of close growing crops
9. Water Holding Capacities of Soils
•Organic Matter
• Organic matter aids in cementing
particles of clay, silt, and sand together
into aggregates which increases the
water holding capacity.
• Decomposition of organic matter also adds
vital nutrients to the soil.
10.
11. New technologies
1.Water-holding polymers (WHP), are a type of polymer that
can absorb and retain large amounts of water.
2.These materials are used in various applications, agriculture
and foodprocessing.
3.They are typically made of a network of polymer chains that
are cross-linked to form a three-dimensional structure that can
hold onto water molecules
12.
13. New technologies
Polymers
Natural Synthetic
Polymeric
Polyaspartic acid – 300-350g/g
Polyacrylicacid - 300-500 g/g
Polyacrylamide (PAM)-1452 g/g
Cellulose
Starch
chitosan
Lignin
Copolymer of acrylic acid and acrylamide
Polyvinyl alcohol-1200 g/g
Super absorbent polymer
(Hydrogel)
