M3.1 pdc+++ : M3.1 pdc+++ We could say that the destructo-culture, based on industrialized agriculture, carries a basic dysfunction, which is to see the soil as an inanimate thing, a resource to be exploited, & even something that can be seen as 'property' of human beings.
This paradigm has to change because it is at the base of great injustices & of the destruction of the most important base for life on Earth.
In this class we meet the soil as a living being, an organism of enormous complexity & importance, studying how it works in detail, from the microscopic to the global level.
To know soil intimately is fundamental for any sustainable design & to have a direct & vital relationship with this great organism helps us re-connect, physically as well as emotionally, with the Planet. del M3.1 SOIL An integral exploration
Wangari Maathai : Wangari Maathai "Until you dig a hole,
you plant a tree,
you water it
and make it survive,
you haven't done a thing.
You are just talking." ... and a tree needs
many cubic meters
of soil
rich in
organic matter
and millions of
bugs ... Kenia, April 1th 1940 -
September 25th 2011
M3.1 SOIL : M3.1 SOIL Geology & Ecology
Agriculture
Biology
History & Culture
Psychology
PermaCulture an integral exploration according to ...
M3.1 SOIL : M3.1 SOIL Geology & Ecology
Agriculture
Biology
History & Culture
Psychology
PermaCulture an integral exploration according to ...
Slide 5 :
Slide 6 : Alteration of the bedrock How is soil created? Life
How are soils created? : How are soils created? Water Wind Organic
Matter
OM Create
Structure Interactions Wind Rivers
& Seas Bedrock Temperature
Slide 8 : 8
Slide 9 : 13 oct 2011
Slide 10 : 10
Slide 11 : 13 oct 2011
Slide 12 : Mineral fragments of various sizes Soil physical composition Macropores - aireation
Micropores - humidity Silt Clay Gravel Sand
Slide 13 : 13
Slide 14 : Soil Properties by Type
Slide 15 : retains water and nutrients many possibilities for improvement Lack of oxigen Cold Warm more gaseous exchange rapid
decomposition many macropores, do not retain moisture nor nutrients almost only micropores easily waterlogged
Slide 16 : A0 Leaf Litter A superficial (accumulates humus, and materials are washed down into B) B accumulation of materials that come from A C1 disaggregated Bedrock C2 Bedrock Soil Profiles
Slide 17 :
Slide 18 : 18 18
Slide 19 : Good to know what we have before starting in order to make adjustments The optimum pH for most vegetables is 6.8 (or 6 to 7) pH= - log[H+]
o
pH= log (1/log [H+])