Introduction to Permaculture DVD - Soils
Chapter 8 - Soils - Course Notes
Collapsing soil fertility. Geoff’s permaculture story.
Compost. Chemical agriculture.
pH testing Acid V’s Alkaline soils.
pH. of soil and availability of minerals to plants. Role of weeds. Ants.
Soil fertiliser. Berkley Method of 18 day compost.
18 day compost continues. Fixing problems with compost.
Compost tea. Bio fertiliser.
Mineralising soils by feeding livestock. Worm farms.
I thought this video "Compost. Chemical agriculture." was brilliant. It explains what chemical agriculture does to the soil really well. It also does a really good job of explaining what is wrong with organic agriculture.