Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Soil's Soul
soil is alive!
if you were a root...
Tilth is the general ability of soil to support root growth.
Soil with good tilth has the ability to hold large amounts of water and has many spaces for roots to grow through.
Naturally there are a few ways to add tilth to soil:
By presenting a friendly environment for worms and other organisms we can ensure they will live in our environment and contribute to the soil health.
what helps our plants
through the roots
stay in soil?
nitrogen is a
nitrogen helps with plant tissue and keeps it green
becomes available from minerals and decomposing organic matter
it helps with root & shoot growth
potassium helps with flowering and fruiting
bacteria exist mostly in the
where roots are
they make nutrients
itrogen from the atmosphere, and makes it available to plants
fungi initiate the
many plants develop a
with fungi -- they
worms are important for
of the soil
(worm poop) is highly nutritious for plants
that live in the worm's
break down organic matter
organisms in soil are
an entire field can be viewed as
soil has three textures:
humus or organic matter
made up of decomposing material
roots reach this horizon
clay, minerals, organic matter
minerals that leached from above layers
deposit at Earth's surface from which the soil developed
good tilth allows soil to exchange gases with the atmosphere
next time that you're in China, Brazil or Canada, grab a sample of the soil!
plays a role in soil nutrients!
Almost a half-century ago, André Voisin had already grasped the importance of elements of the soil and their effects on plants, and ultimately, animal and human life. He saw the hidden danger in the gross oversimplification of fertilization practices that use harsh chemicals and ignore the delicate balance of trace minerals and nutrients in the soil. In this volume Voisin issues a call to stand up and acknowledge our responsibilities for public health and protective medicine ż part of a concerted attempt to remove the causes of ill health, disease and, in particular, cancer.
$500 -$1,200 on Amazon
One prominent academic study compared nutrient levels in 43 garden crops in 1999 with levels documented in benchmark nutrient studies conducted by USDA in 1950. The scientists found declines in median concentrations of six important nutrients: protein –6%, calcium –16%, phosphorus –9%, iron –15%, riboflavin –38%, and vitamin C –2%.[ii] Another study published in the Journal of Applied Nutrition in 1993 showed nutritional deficiencies for conventional foods relative to organic foods.[iii] Organically grown apples, potatoes, pears, wheat, and sweet corn, purchased over a two-year period, averaged 63% higher in calcium, 73% higher in iron, 118% higher in magnesium, 91% higher in phosphorus, 125% higher in potassium, and 60% higher in zinc than conventional foods purchased at the same time.