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3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 1/6

Agriculture and Soil Health (Chapter 20) Notes

Agriculture and Soil Health (Chapter 20) Notes

Did you know .... Did you know the world population is set to reach 9 billion people by 2050? Chapter 20 finalizes our soils material with a disucussion of soil health, how soils will be an intregal part of trying to feed, clothe, and house those 9 billion people, and finally some information on careers in agriculture.

Lecture content notes are accompanied by videos listed below the notes in each submodule (e.g. Agricutlure and Soil Health (Videos A and B). Print or download lecture notes then view videos in succession alongside lecture content and add additional notes from each video. The start of each video is noted in parenthesis (e.g. Content for Video A) within each lecture note set and contains lecture content through the note for the next video (e.g. Content for Video B).

Figures and tables unless specifically referenced are from the course text, Nature and Property of Soils, 14th Edition, Brady and Weil.

Content Video A

Agriculture and Soil Health

Orgins of Agriculture

AGRI1050R50: Introduction to Soil Science (2020S) LH

3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 2/6

Impact of Agriculture Produce Feed and Fiber – Survival, Quality of Life

Global Population – 9 Billion – 2050

US Net Exporters - ~1/3 total production is exported

Farmer Feed the World

1940 – 1 Farmer could feed 19 people

2015 – 1 Farmer feeds 155 people

21 million Americans work in Ag – 15% workforce

Farmers 2% of the US Population

Global Ecosystem Approach

Soil Health The capacity of a sol to function as a vital living ecosystem that sustains plants, animals, and humans

Nutrient Cycling

Water – infiltration and availability

Physical Stability and Support

Buffering and Filtering

Habitat for Biodiversity

3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 3/6

http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

Soil Quality vs Soil Health Soil Quality – Inherent soil properties

Not changed with management

Texture, depth, etc.

Soil Health – Dynamic soil properties

Change with management

SOM, Bulk Density, Aggregate Stability, Microbial activity

Resilient and Resistant

Soil Health – Entire Ecosystem vs Soil Quality – Specific, Measured Indicators

http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

Soil Health Planning Principles Disturb Less

Utilize diverse series of plants

Maintain living roots through the year

Keep the soil covered

Goal: Create the most favorable habitat possible for the soil-food web

Soil Health Information http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

Searchable Database – Peer Review Journal Articles

Soil Health

Conservation Practices

Crop Rotation

Cover Crops

Nutrient Management

3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 4/6

Effects – Soil properties, yield, etc.

Summaries

Dictionary

http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

Soil Health - Part of the Solution

Content Video B

Tradtional Face of Agriculture

3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 5/6

Face of Agriculture Today

Areas of Agriculture

Ag Impact TN

3/29/2020 Agriculture and Soil Health (Chapter 20) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403459/View 6/6

Reflect in ePortfolio Download Print

https://www.tn.gov/agriculture/publications/farmfacts.pdf

Task: View this topic

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