PPT-Soils (Part 2): Sources

of Organic Nutrients This material is based upon work that is supported by the National Institute of Food and Agriculture US Department of Agriculture under grant number 20135110621005 Authors. Sedzani. . Elia. . Muravha. 12 January 2012. Introduction………………………………………………………….... Characteristics of expansive soils…………………………………... Identify Basic Soils Properties. TEC C03-A01. Why is. . Soil . important ?. It is the foundation for. all types of pavement. systems and building. structures.. What is . Soil . .... is the entire unconsolidated . Plant Material Maintenance. Soil. Soil is the top . layer of . the Earth’s crust. .. Millions of years to make. Being lost at a rate of 5.2 tons/acre/year (Iowa state-wide average). SOLIDS +. PORE SPACE =. CLORPT for short. Soils differ from one part of the world to another, even from one part of a backyard to another. . They differ because of where and how they formed. And over time, five major factors control how a soil forms. These factors are . Russell Yost. 1. , . Bao-Shen. Li. 2. , Prof. . Xiaolin. Li. 2. , ZuChao. 3. 1. Tropical Plant and Soil Sciences. University of Hawai`i at . Manoa. Honolulu, Hawai`i. 2. China Agricultural University, Beijing, China. Extensively developed in Antarctica and rare outside of Polar regions. Characterized by a specific lithology due to penguin nesting behavior. Includes a combination of soil, pebbles, guano, highly rich in organic. University of California Cooperative Extension. Our agenda for today. Basic soil principles. The things we add to our soils. Amendments. Mulches. Compost. Fertilizers. Soils for the Gardener. Why are Soils Important to Sustainability?. Soils differ from one part of the world to another, even from one part of a backyard to another. . They differ because of where and how they formed. And over time, five major factors control how a soil forms. These factors are . Tundra comes from the Finnish . tunturia. ,. which means barren . or treeless land. However, the . tundra is not really barren. A . diversity of low growing plants . – including a few dwarf trees . Most forests are not too . hot. , or not too . cold. , and have moderate amounts of precipitation. . ALFISOL. Moderately Weathered. SPODOSOL. Sandy, Acidic. There are two main types of forests. . Pine forests have ashy white layers (. What is a . WETLAND. ?. Peat Bogs: Poor Man’s Charcoal. HISTOSOL. Organic, Wet. What are . hydric. soils???. Hydros. = water in Latin. Surface layers are usually . BLACK. The subsoil is . GRAY. , and has freckles of bright . Matthew 13. Mark 4. Luke 8. The Different Soils. Wayside Heart. Stony Heart. Thorny Heart. Good Heart. Emphasis Upon Hearing the Word of God. Parable begins with, . “Listen!” . (Mark 4:3). Ends with Jesus crying out, . The . 6. Functions of Soils. SOIL. Medium for plant growth. System for water supply and purification. Recycling system for nutrients and organic wastes. Habitat for . soil organisms. Engineering medium. Soils support the growth of higher plants by providing a medium for plant roots and supplying nutrient elements that are essential to the entire plant.. Soil properties are the principal factor controlling the fate of water in the hydrologic system. Water loss, utilization, contamination and purification are all affected by the soil..