PPT-Soil texture The soil textural triangle

The delicacy of clay crystals Soil crumb structure Do not abuse clay Add plenty of organic matter Avoid overcultivation especially rotary cultivation Use lime of gypsum to improve structure Use green manure or mulch to cover the surface. texturecourtesyNASA: (Getandsample)soilhorizonsmallthesprayLetthebetweenthemoisturethroughout.OncetheStepStep(TestIf the soil: handswhenrubbedandStep themediumribbon What are your thoughts on these pictures. Physical . Chemical. &. Properties of the soil. Soil. (1) Physical . Properties. This relates to the physical characteristics of the soil. . eg. Ooooh. ! Exciting . . Soil . Soil is from . parent . rock. It takes 200 years to form a layer of soil.... 1cm. thick!. . Soil forms distinct layers over time.. Layers can be distinguished by color, texture and composition. Soil Texture. Soil Texture:. Fineness or coarseness of a soil. What are the three soil particles?. Sand . Silt . Clay. Soil Texture. Why is soil texture important?. It affects. Water-holding Capacity. Department of Crop and Soil Sciences 1 Department of Crop and Soil Sciences 2 College of Agriculture and Life Sciences Texture should not be confused with structure A. Explain the nature and composition of soil;. Soil is the outer layer of the earth. Dirt is displaced Soil. Composition of average soil . a. 25% Air. . b. 25% Water. . c. 5% Organic Matter. . d. 45% Mineral Matter. by Moira Whitehouse PhD. Remember physical properties are the things we can observe about a substance using our five senses.. For soil, the two main physical properties are color and texture.. Texture. Slope . Limits land use. Effects amount of water and the speed of water run off . Effects the degree of erosion . Measuring Slope . Is the rise or fall in land per 100’. Slope is always measured in %. A crash course in soils. Wednesday, November 5. Take out paper for Cornell notes! . And remember…. Red text on top = Header. Black text = notes for you to copy OR paraphrase/ summarize. Grey text = Liu’s talking points, no need to copy it down. Ooooh. ! Exciting . . Soil . Soil is from . parent . rock. It takes 200 years to form a layer of soil.... 1cm. thick!. . Soil forms distinct layers over time.. Layers can be distinguished by color, texture and composition. by Moira Whitehouse PhD. Remember physical properties are the things we can observe about a substance using our five senses.. For soil, the two main physical properties are color and texture.. Texture. Introduction to Agriculture. Soil Science. Unit 2. Physical Properties. Physical properties or characteristics of the soil determine to a large degree how useable and productive soil will be. Productivity of soil is affected by the physical properties of soil. Understanding Hydrologic Soil Groups and Site Specific Mapping. URI Coastal Institute, Kingston. June 28. th. 2012. Jillian Phillips URI Cooperative Extension NEMO. Acknowledgments. . 2007. Site Specific Soil Mapping (SSSM) Standards . Soil Composition. Soils are made of four main components:. mineral matter. (40 - 60 %). soil water. (20 - 50 %). soil air. . (0 - 40 %) The soil pore space is filled either by soil water or soil air.