UNIT #2 Soil What is soil?. Soil: A mixture of mineral particles and organic material that covers the land, and in which terrestrial plants grow.

Slides:

Advertisements

Similar presentations

Advertisements

Let’s Get Down and Dirty!

Agricultural Practices in Kansas Comparing Agricultural Practices before and after the dust storms of the 1930’s.

Less permeable clay layer

Chapter 15/14 Soil Resources. Soil  Uppermost layer of Earth’s crust that supports plants, animals and microbes  Soil Forming Factors  Parent Material.

The Nature Of Soil Ms. Scerra

Hot Deserts. Deserts around the world. Hot Deserts This is a very harsh environment...there are many issues faced by plants, animals and people... Nomad:

By: Eric Fabick.  Degradation is a process in which soil is loosened up through a variety of activities. Then through the process of erosion (both wind.

Soil. Characteristics Soil is a thin layer on top of earth’s land surface. Soil is a natural resource and deeply affects every other part of the ecosystem.

THIS IS THE PYRAMIDS CHA CHA CHA CHANGES FARMER BROWN DIRTY CALCULATION STATION NATURAL CAPITAL.

Advance Desertification AGR 740 Advance Desertification AGR 740 Dr. Refaat Abohassan.

Soil. Soil  Formed by 1- weathering of rocks, 2- deposition of sediment, and 3- decomposition of organic material  Soil Composition  Minerals (45%)

Chapter 12 Soil Resources. Soil Problems o Soil Erosion Def: wearing away or removal of soil from the land Def: wearing away or removal of soil from the.

If there are two types of soil degradation… Soil erosion Loss of fertility …What methods can we use to conserve the soil? How do we prevent? Soil erosion.

Soil Erosion & Degradation Soil erosion: movement of soil components, especially litter & topsoil, from one place to another. losing topsoil makes soil.

Soil Composition 2 1/13/12. What are the soil textures? Table 1. The Size of Sand, Silt and Clay NameParticle Diameter Clay below millimeters Silt.

Soil Erosion Soil erosion is the movement of soil components from one place to another, usually from wind or water. Plant anchor the soil so that it is.

Soil Resources 14.

Ch.10, Sect.4: Soil Conservation Please Copy in your IAN Objectives: 1) 3 Benefits of Soil 2) 4 methods of preventing soil damage Review: Answer the following.

Dust Bowl What are 3 natural causes of the dust bowl? What are 2 man made causes of the dust bowl?

Explain the causes of soil degradation

From Bedrock to Soil.

4 th Grade Springville, Utah Where does soil come from? Rocks Minerals Organic Matter.

 The world’s population is increasing at an alarming rate.  All of these people need to eat.  However, less than 25% of the Earth’s land can be used.

DEGREADATION CONGERVATION

1. Explain why soil degradation happens. 2. Discuss the environmental and socio-economic impacts of soil degradation. 3. Discuss how soil degradation can.

Where does soil come from?

Soil Abuses and Conservation. Case Study (Cunningham) Farming the Cerrado.

Soils: One of Our Natural Resources!. Some call it dirt…..But it is Soil !!! Soil is made of loose, broken down rock and organic material.

WEATHERING and SOIL Does The Earth’s Surface Change Slowly OR Quickly?

Chapter 4 Land and Soil Resources Section 1 Conserving Land and Soil Notes 4-1.

15-2 Crops and Soil Page 384. A. Fertile Soil: The Living Earth 1. Soil must be fertile to produce healthy plants.

Global Trend: Where Did All the Farms Go? Poor farming practices = loss of soils and farmland –Erosion –Salinization Development in United States = loss.

Food and Soil Resources G. Tyler Miller’s Living in the Environment 14 th Edition Chapter 14 G. Tyler Miller’s Living in the Environment 14 th Edition.

Soil erosion or degradation is a natural process. It becomes a problem when human activity causes it to occur much faster than under natural conditions.

Soil & Agriculture Chapter 9.  sinesstechnology/ _inperson maas06.html

SOIL CONSERVATION. BELLRINGER Franklin D. Roosevelt once said: “The nation that destroys its soil destroys itself.” In your notebook write what you think.

SOIL CONSERVATION. BELLRINGER Franklin D. Roosevelt once said: “The nation that destroys its soil destroys itself.” What do you think he meant?

Soil Erosion & conservation

SOIL CONSERVATION

Warm-Up Review What are the 5 components in soil?

CHAPTER 2 NATURAL RESOURCES AND THEIR CONSERVATION LAND RESOURCE.

Food and Soil Resources

Soil Conservation.

Soil Degradation & Conservation

Food and Soil Resources

Soil Degradation and Conservation

5.3 - Soil degradation and conservation

Human Impact on Soil.

5.3 - Soil degradation and conservation

Crops and Soil.

Desertification.

Soil Science. Soil Science Where does soil come from? Rocks Minerals Organic Matter.

Ch.10, Sect.4: Soil Conservation

Soil Conservation.

Ch.10, Sect.4: Soil Conservation

Crops and Soil.

Soil Conservation.

Topic 5.3: Soil degradation and conservation

Agricultural Techniques

Agricultural Techniques

What causes it? How can we prevent it?

From Bedrock to Soil Ch. 10 Section 3.

By: Dr.Yasir Yousif Abdalla

Agriculture and Soil Unit 9: Food April 22, 2009 Sanders.

Ch.10, Sect.4: Soil Conservation

Farming Sustainability & Soil Conservation

Presentation transcript:

UNIT #2 Soil What is soil?

Soil: A mixture of mineral particles and organic material that covers the land, and in which terrestrial plants grow.

Other Definitions… See textbook.

Permeability and Porosity

Why Degradation? Human activities such as overgrazing, deforestation, unsustainable agriculture and irrigation cause processes of degradation. These include soil erosion, toxification and salinization. Desertification (enlargement of deserts through human activities) can be associated with this degradation.

Soil Conservation soil conditioners (for example, use of lime and organic materials) wind reduction techniques (wind breaks, shelter belts, strip cultivation) cultivation techniques (terracing, contour plowing) efforts to stop plowing of marginal lands.

LEDC vs MEDC

Sources Visited Thomson Higher Education