Basic Soil Health - University of Missouri · Simplifies the soil fauna over time -fungi don’t...
Transcript of Basic Soil Health - University of Missouri · Simplifies the soil fauna over time -fungi don’t...
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Basic Soil Health
Doug Peterson MO/IA NRCS Regional Soil Health Specialist
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What is the most limiting natural resource in your forage/crop production system?
Sunshine?Minerals?
Water?
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What is the most important item in the water cycle???
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No-till FieldTilled Field
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The Water Cycle-Is it broken?
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SOM = 4.3 %CT 17 yr- Soybean monoculture SOM =
1.6 %
20
cm
la
yer
This is the same soil- What happened?
Both soils started with the same Inherent soil Properties soil:
•climate (precipitation and temperature) •topography (shape of the land) •biota (native vegetation, animals, and microbes) •parent material (geologic and organic precursors to the soil) •time (time that parent material is subject to soil formation processes)
62.8% loss of SOM after 17 yr intensive
tillage
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SOM = 4.3 %CT 17 yr- Soybean monoculture SOM =
1.6 %
20
cm
la
yer
This is the same soil- What happened?
Both soils started with the same Inherent soil Properties soil:
•climate (precipitation and temperature) •topography (shape of the land) •biota (native vegetation, animals, and microbes) •parent material (geologic and organic precursors to the soil) •time (time that parent material is subject to soil formation processes)
62.8% loss of SOM after 17 yr intensive
tillage
Dynamic properties depend both on land management and inherent properties of the soil: • organic matter,• soil structure, • infiltration rate, • bulk density, • and water and nutrient holding capacity.
62.8% loss of SOM after 17 yr intensive
tillage
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25 yrs of conventional corn
20 yrs of bluegrass, then 5 yrs conventional corn
Water stable
aggregates
After adding water
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If we know tillage degrades the soil so badly then why is tillage so engrained into our society?
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If we know tillage degrades the soil so badly then why is tillage so engrained into our society?
Why did tillage start?
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Start of Tillage
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Plowing the Prairie
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Big Changes
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Two Things Create Aggregation
1. “Biotic Glues” from Soil Organisms
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Two Things Create Aggregation
2. “Exudates” from Plant Roots.
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Without liquid Sun-No Biology-”Soil without Biology is just Geology”! Ray Archuleta
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If We Focus On The Problem Of Poor Soil Health The Symptoms Are Taken Care Of!!
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
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Physical Disturbance in the form of tillage destroys the
biological and ecological integrity of the soil ecosystem.
1. Disturbance stimulates the first responders--increased weed population
2. Destroys soil pores by shearing and smashing-impacts infiltration
3. Diminishes the soils ability to respire
4. Disrupts the habitat of most microorganisms arthropods
5. Simplifies the soil fauna over time -fungi don’t like disturbance -Mycorrhizal fungi – uptake of P, Zn, Cu, Fe
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No-till Systems are the Beginning of Cropland Soil Health
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Chemical disturbances: excessive or repeated applications of pesticides, fertilizers and manures
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
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What does diversity really mean?
Cool Season Grass
Warm Season Grass
Cool Season Broadleaf
Warm Season Broadleaf
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A Balanced Diet in Cropland ?
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A Balanced Diet in Cropland??
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A Balanced Diet with Cover Crops
Oats and Radishes
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A Balanced Diet of Crops in our Rotation?
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A Balanced Diet of Crops in our Rotation?
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A Balanced Diet of Crops in our Rotation?
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Root Diversity
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Soil Fertility
Depth Ca Mg K OM pH(salt)
0-8 4560 484 234 3.5 6.1
8-13 2480 580 156 1 4.4
13-21 4600 1210 312 .86 4.3
21-28 4960 1355 312 .69 4.4
28-43 5120 1258 156 .34 4.9
43-51 6560 1452 78 .34 6
51-67 18360 871 78 0 7.6
67-74 17360 992 78 .17 7.6
74-78 15960 1065 78 0 7.7
NRCS Pedon M0717103, Armstrong, Putnam County
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
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Soil Health
Type of Organism number/acre pounds/acre
Bacteria 800,000,000,000,000,000,000 2,600
Actinobacteria 20,000,000,000,000,000 1,300
Fungi 200,000,000,000,000 2,600
Algae 4,000,000,000 90
Protozoa 2,000,000,000,000 90
Nematodes 80,000,000 45
Earthworms 40,000 445
Insects /arthropods 8,160,000 830
Soil Food Web
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Rhizosphere
Number one food source of most soil organisms is a living root.
Living roots release many types of organic materials into the rhizosphere around the surface of the root
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
![Page 39: Basic Soil Health - University of Missouri · Simplifies the soil fauna over time -fungi don’t like disturbance -Mycorrhizal fungi –uptake of P, Zn, Cu, Fe ... Dirt-The Erosion](https://reader034.fdocuments.us/reader034/viewer/2022042411/5f29fe35a6ee04005c494f7c/html5/thumbnails/39.jpg)
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When soil temp reaches. . .140°F
130°F
100°F
70° F
Soil bacteria die
100% moisture lost through evaporation & transpiration
15% moisture is used for growth 85% moisture lost through evaporation & transpiration
100% moisture is used for growth
J.J. Mc Entre, USDA SCS, Kerrville, TX, 1956
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Spring Weed SuppressionIntegrated Pest Mgt BCSCD Site
Cover Crop 2007No Cover Crop 2007
Understanding Succession
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Ranching/Farming in the 21st Century-a practical approach to soil health
Manage more by disturbing less
Diversity is Critical
Feed your soil livestock all year long
Keep the soil covered
Integrate livestock
![Page 43: Basic Soil Health - University of Missouri · Simplifies the soil fauna over time -fungi don’t like disturbance -Mycorrhizal fungi –uptake of P, Zn, Cu, Fe ... Dirt-The Erosion](https://reader034.fdocuments.us/reader034/viewer/2022042411/5f29fe35a6ee04005c494f7c/html5/thumbnails/43.jpg)
Building Soil
How did nature make all that soil in the first place?
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Cows actually add biology
Biology in the manure
Biology in the saliva
Biology in the milk foam
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Integrating Livestock Into Cropland
Jason Saunders
$100 per acre/grazing days
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Integrating Livestock Into Cropland
Jason Saunders
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Building Blocks of Soil Health
Manage more by disturbing less
Diversity is critical
Feed your soil livestock
Keep the soil covered
Integrate livestock
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Expand your knowledge - Read a Book
The Nature and Properties of Soils by Brady and Weil
Holistic Management by Allan Savory
Agroecology by Gliessman
The One Straw Revolution by Masanobu Fukuoka
Teaming with Microbes by Lowenfels and Lewis
Soil Biology Primer by Elaine Ingham
The Worst Hard Times by Timothy Egan
Collapse by Jared Diamond
Dirt-The Erosion of Civilization by David Montgomery
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The quality of our lives depends on
the food we eat
the water we drink
and the air we breath.
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The quality of our lives depends on
the food we eat
the water we drink
and the air we breath.
All of those things depend on
the quality and health of the SOIL.
Charles Kome