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Soil Basics - Creating Fertile, Healthy Soil

Have you ever looked at the soil in your garden and considered it as anything more than soil? If not you should because there is a lot more there than meets the eye. It performs many functions that you may not be aware of and having good quality soil in your garden is essential for your plants. In this article we will look at the functions of soil, what different types there are and finally some ways to make it healthier. Functions of Soil The most immediately apparent function of soil is a medium to support plant life. It provides support both physically and biologically. Physical support is provided by allowing the plant to grow its roots through the soil to hold itself in place.

Biological support is provided by its ability to hold nutrients and water that the plant needs. It also supports other types of life as well. Microorganisms and insects live in the soil and they in turn aid plant life by helping to decay organic material and adding structure to the soil. Soil allows the growth of food crops which are consumed by humans and also plants used in the creation of medicines. Microorganisms like fungi and bacteria that live in soil and are used to produce antibiotics.

All life on earth is dependant on it either directly and indirectly. This includes the plant life in your garden. What is Soil Made of? The four major components of soil are mineral matter, organic matter (humus), water and air. Mineral matter refers to the inorganic elements in the soil e. stones, gravel and makes up to 40%-60% of its volume. This part of the soil usually originates from the bedrock that lies beneath the soil. Organic matter (humus) is the decayed remains and waste products of plants and animals and has a great effect on the chemical properties of the soil e. availability of nutrients.

Almost 40%-60% of a soil's volume can be space and this is occupied by water and air. Different Types of Soil Texture Soil texture is defined as the size distribution of different mineral particles. These mineral particles are at their most basic level the following: sand, silt and clay. Sand particles are 2 to 0.05 mm diameter, silt particles are 0.05 to 0.002 mm diameter and clay particles are less than 0.002 mm diameter. Combination of these particles exhibit different properties in soil and some combinations favour plant life better than others. The following are the most common classes of soil texture: Clay soil Contains a high percentage of clay particles and feels lumpy to the touch.

The small size of the clay particles means that they clump together quite readily and there is less room for air spaces. Consequently clay soils have poor drainage and do not hold nutrients very well. This is a heavy soil and is sticky when wet making it hard to work with. As much as possible you should take steps to improve the drainage of this type of soil. You will learn how later on in this article. Silty soil Contains a high percentage of silt particles and feels smooth to the touch. This soil is a well drained soil due to the size of the particles allowing space for water to permeate. This soil holds nutrients more readily than clay soil due to the spaces. It is easy to cultivate but can be compacted quite easily. Sandy soil Contains a high percentage of sand particles and feels gritty to the touch, Allows for quite a lot of space in between particles and as a result is very free draining.

This has its disadvantages however as it does not hold water and essential nutrients can get washed away. Loamy soil This is the best type of soil texture you can have in your garden. This is soil whose properties are controlled equally by the percentages of clay, silt and sand particles. It is well drained but does not loose water too easily as is the case with sandy and sometimes silty soils. The fact that it retains water means it also retains nutrients for your plants to use. It has a great structure and is easy to cultivate. What Makes a Soil Healthy? Healthy soil must be fertile and have a good structure. For a soil to be fertile it must have nutrients readily available and a pH value at a recommended level for the plants that will reside in it. Nutrients that should be available are the essential nutrients nitrogen (leaf growth), phosphorous (root growth) and phosphorous (overall health).


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Petrol Gas Fuel Oil
Additives Magnets Vapor devices Air bleed devices
Electronic devices Thermodynamic efficiency

Fuel Saving Devices





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