https://padlet.com/jplemmens_engineering/5i9qgsljdbym General and Amentites Horticulture Course Otago Polytechnic 2019 en-us 2019-05-01 23:03:01 UTC 2024-10-16 01:17:23 UTC hello@padlet.com https://imgglb.padletcdn.com/v13/image?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f331.png jplemmens_engineering https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356003719 A natural body on the earth's surface.

Soil is dynamic with different structures and makeup in different geographical regions and is ever changing and constantly going through change.


In other words, a soil is an entity - an object in nature which hascharacteristics that distinguish it from all other objects in nature.” - C.E.Millar & L.M.Turk 1943. “We know more about the movement of celestial bodies than about the soil underfoot.” - Leonardo Da Vinci, circa 1500's.]]> 2019-05-01 23:12:23 UTC https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356003719 jplemmens_engineering https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356007619 -Soil needs porosity to allow air & water to hold for plants and micro organisms as well as allowing for drainage.

-Soil can be damaged by compaction, salt water/salinisation, over fertilization & poor soil management/farming practices.

-Soils have cultural significance in that they preserve artifacts, have been historically used for dyes for paints and artwork and growing food.]]> 2019-05-01 23:36:33 UTC https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356007619 jplemmens_engineering https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356007968 Soil is connected to everything and is the basis of life as we know it.

•Food consists of plants grown in soils.
•Drinking water flows through soils.
•Clothes come from plants grown on soils.
•Buildings are built on soils.
•We breathe air that comes from plants which are grown on soils.
•Antibiotics are made from soil organisms.

Soils perform vital functions.

Soils support life.

However soils do have limitations that we need to be aware of to be able to sustain healthy soils and a healthy planet and civilization.]]> 2019-05-01 23:38:27 UTC https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356007968 jplemmens_engineering https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356010106 Soil porosity is important for many reasons.
One reason is that soil pores contain groundwater that many of us drink.
Another important aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so a well-aerated soil is important for growing crops.]]> 2019-05-01 23:50:05 UTC https://padlet.com/jplemmens_engineering/5i9qgsljdbym/wish/356010106