Soil LaB

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 1/8

Soil and Hydrologic Cycle (Chapter 6) Notes

Soil and Hydrologic Cycle (Chapter 6) Notes

Did you know .... Did you know that the majority of the water you drink comes from underground aquifers? And that soils play a very important part keeping that water clean for consumption. Chapter 6 continue our discussion on water and soils and includes discussion of the global hydrologic cycle and soils role in it, what happens to water when it comes in contact with the soil surface, how water moves from the soil up through the plants and out throgh the leaves, controlling water loss, and managment of soil water.

Lecture content notes are accompanied by videos listed below the notes in each submodule (e.g. Soil and Hydrologic Cycle (Chapter 6) Videos A though D). 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 referrenced are from the course text, Nature and Property of Soils, 14th Edition, Brady and Weil.

Content Video A

Hydrologic Cycle

AGRI1050R50: Introduction to Soil Science (2020S) LH

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 2/8

Fate and Transport P = ET + SS + D

Interception

Infiltration

Runoff

Soil Storage Water

Vegetation

Cover

Stem Flow

Soil Texture

Soil Management

Maintain cover

Increase structure

Decrease compaction

Soils and Urban Development

Content Video B

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 3/8

Soil-Plant-Atmosphere Continuum

Vapor Loss Evapotranspiration – Evaporation + Transpiration

PET – Potential ET

Factors Effecting ET:

Soil Moisture

Plant Stress

Solar Radiation – LAI

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 4/8

Water Efficiency Tremendous amount of water to produce our food and fiber.

Efficiency peaks at ~1kg dry matter/1000 kg or m3 of water

Content Video C

Control ET Loss Transpiration – Plant loss

Evaporation – Soil Surface Loss

Vegetative Cover

Crop Residue

Mulch

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 5/8

Vegetables – Plastic

Irrigation - drip

http://photogallery.nrcs.usda.gov/res/sites/photogallery/

Liquid Losses

Memphis Sand Aquifer

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 6/8

p q

http://pubs.usgs.gov/wri/wrir88-4182/pdf/wrir_88-4182_a.pdf

Content for Video D

Artificial Drains

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 7/8

Septic Tanks

Irrigation

2/21/2020 Soil and Hydrologic Cycle (Chapter 6) Notes - AGRI1050R50: Introduction to Soil Science (2020S)

https://gotoclass.tnecampus.org/d2l/le/content/8094442/viewContent/60403378/View 8/8

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