1) The student conducted an experiment to determine which soil type retains the most water by pouring 500ml of water through samples of humus, clay, sand, and gravel soil.
2) The hypothesis was that humus soil would retain the most water due to its small pore space.
3) The results showed that humus soil retained the most water on average at 301ml, followed by clay at 451ml, sand at 360ml, and gravel, which retained the full 500ml poured through it.
Exposes the elementary science student to the idea there are three major kinds of soil found on earth as well as the very important remains of dead plants and animals called humus. Discusses soil and humus along with as some of the properties of each.
Exposes the elementary science student to the idea there are three major kinds of soil found on earth as well as the very important remains of dead plants and animals called humus. Discusses soil and humus along with as some of the properties of each.
- Formation and evolution of soil.
- Characteristics and classification of soils.
- Regularity and environmental features of soil distribution on Earth.
- Location of the soil in the biosphere.
- Morphological signs of soil profile.
- Structure of soil profile.
- Granulometric composition.
- Soil composition: properties and modes.
- General physical properties of soil.
- Formation and evolution of soil.
- Characteristics and classification of soils.
- Regularity and environmental features of soil distribution on Earth.
- Location of the soil in the biosphere.
- Morphological signs of soil profile.
- Structure of soil profile.
- Granulometric composition.
- Soil composition: properties and modes.
- General physical properties of soil.
In plain English, the presentation explains what can and cannot be done to mitigate the effects of clay content in soil. It includes some basic irrigation terms and their definitions, within the context of soil texture.
Fundamentals of Soil Science, Types of soils, Principles of Soil Stabilization, Characteristics of
core, Types of Stabilizers, Requirements and Types of mudwall building and surface protection.
Ground Improvement of Dune Sand Fields For The Purpose of Moisture RetentionIJERA Editor
Plant growth depends on the use of two important natural resources, soil and water. Soil provides the mechanical and nutrient support necessary for plant growth. Water is the major input for the growth and development of all types of plants. The availability of water, its movement and its retention are governed by the properties of soil. The properties like bulk density, mechanical composition, hydraulic conductivity etc depends on the nature and formation of soil and land use characteristics in addition to the weathering processes and the geological formations. Effective management of the resources for crop production requires the need to understand relationship between soil, water and plants. Study of soil and its water holding capacity is essential for the efficient utilization of irrigation water. Hence identification of geotechnical parameters which influences the water retention capacity and the method of adding admixtures to improve the retention capacity play an important role in Irrigation Engineering. This Paper aims to focuses on improving moisture retention of soil by addition of bentonite clay and experimental analysis for monitoring the variation of moisture retention.
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Jon Hill Turf define here about soil layers and soil made up process for growing turf and plants. Jon Hill Turf is a professional to install turf in lawn or in a garden.
Grade 4 School Garden Lesson Plan - Soils Lesson; Make Your Own Soil ~ Massachusetts
|=> In this lesson students take their knowledge about the components of soil, and will mix up their own soil. To add a challenge element to this exercise, student teams will then grow a bean plant in their custom made soil and record which plant does the best.
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For more information, Please see websites below:
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LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
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2. Introduction My experiment is a test into which soil retains/absorbs the most water. This idea was prompted by an earlier project this year. It was a very interesting topic and I wanted to continue my research further. It is a pretty simple project, but it has a very important meaning and much in-depth research and hard work. I hope you enjoy my presentation!
3. Problem Which kind of soil retains the best, when water is poured through it?
4. Research Permeability is the ability of water to flow through a soil is referred to as the soil's permeability There is 4 types of soil: Clay, Humus, Sand, and Gravel Soil is made up of 4 mail components: Water, Air, Mineral Particles, and Organic Matter. (Organic Matter is made up of 3 main parts: Roots, Humus, and Organisms) Weathering causes layers in soil. There can be up to 5 layers in soil: O, A, B, C, and R horizons Soil texture is based on the size of the particles in the soil. Pore space is the void space between particles of soil Pore space helps determine permeability
5. Research (C0ntinued) Rocks can also be permeable Permeable rocks are vulnerable to weathering & erosion Clay usually has the least permeability rate because of it’s very little pore spaces Mid to high permeability rates are the best for plant growth Soil with very little pore space is not good for plant growth if the plant roots cannot fit through the pore space Soil with no plant life is susceptible to erosion Sand and clay have the smallest particles. Humus and clay retain water the best usually
6. Hypothesis If I pour water through four different kinds of soil, thenHumus will retain the most water because Humus has very tiny pore space
7. Materials 4 Rubbermaid 2 Liter containers 1 roll of GardenPlus burlap Scissors 1 roll of Bounty paper towels 1000 ml of Humus 1000 ml of Clay 1000 ml of Sand 1000 ml of Gravel 2 measuring cups 2000 ml of water 4 Office Depot rubberbands
8. Procedures 1. Cut four strips of the burlap. 2. Fold the burlap to fit the four 2 Liter containers. 3. Place the burlap on the containers and secure it with a rubber band. 4. Place the containers on a paper towel, incase of spills. 5. Then measure out 1000 ml of sand, humus, clay, and gravel. 6. Carefully, pour the soil on the burlap covered containers. 7. Measure out 2000 ml of water. 8. Pour 500 ml on each soil type. 9. Take the soil and burlap off the containers after the water has stopped dripping. 10. Record the results. 11. Repeat 3 more times.
13. The size of the rubber bands (10 cm.)Without these variables this would be an inaccurate experiment.
14. Independent Variable The independent variable (the variable I changed) was the soil. Instead of having one soil I had four soil types. This enhanced my experiment because without the independent variable my experiment would really only be an activity.
15. Dependent Variable If I change the soil types then the results will differ. This will happen because each soil has a different permeability rate based on the amount of pore space between particles.
16. Results Humus: 306, 297,301 ml. Clay:456, 432, 466 ml. Sand: 387,341, 352 ml. Gravel: 500,500,500 Ml of water left over Type of Soil
17. Conclusion Overall the project was a success. I am glad I got a “clear-cut winner”. My hypothesis was correct, Humus retains the most water. Humus retained a full 59 more milliliters of water than the 2nd place sand. This project was very simple and easy and had great results. I think everything in my experiment was to the fullest accuracy level possible. I think I might change the burlap, though it worked it fine, a very fine mesh might be more reliable. I am curious to know if the clay hap been compacted tighter, would it have retained more water. Before doing this project I barely knew what permeability was, or that different soils had different permeability rates. Now I know many facts and examples of permeability.
18. Conclusion on the results The results were all pretty realistic. The averages on each soil type were: Humus: 301 Clay: 451 Sand: 360 Gravel: 500 Total Average in ml I think the reason gravel did the worst is because it had the largest pore space. With such large pore space it couldn’t absorb any water. I think the opposite happened for the Humus. Types of soil
19. Bibliography "Managing Soil Tilth: Texture, Structure and Pore Space." Colorado State University Extension. N.p., n.d. Web. 20 Apr. 2011. <http://www.ext.colostate.edu/mg/gardennotes/213.html>. (All the light blue note facts) "ftp://ftp.fao.org/fi/CDrom/FAO." ftp://ftp.fao.org/fi/CDrom/FAO. N.p., n.d. Web. 12 Apr. 2011. <ftp://ftp.fao.org/fi/CDrom/FAO_Training/FAO_Training/General/x6706e/x6706e09.htm >. (All the green note facts) "http://http://cmex.ihmc.us/da." http://http://cmex.ihmc.us/da. N.p., n.d. Web. 12 Apr. 2011. <http://cmex.ihmc.us/data/catalog/AncientGroundwater/poreSpace.html >. (All the Orange note facts)