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5th Property of Soil= Ability to Hold Water

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5th Property of Soil= Ability to Hold Water

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As I talked about in the 2nd property of soil, the soil needs to help plants grow. One thing that all plants need in order to grow is water. Soil must allow water to filter through to the roots, but it also must not let it drown the roots. Basically, the right amount of water needs to hit the roots. The particles, again, play a roll here. Big particles easily let water run right through the soil. On the other hand, small particles hold water up to the roots, and it doesn't drain as easily.

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If you have ever heard the word texture, you probably heard someone talking about clothing or carpets or something like that.  What texture means is how something feels.  When talking about soil, like anything else, it can be either smooth or rough or somewhere in between.  The texture is determined by the particles.  Some soil is made with big particles, which feels rough. Other soil has small particles, making it smooth or soft to touch. For example silt is super smooth that it almost feels like ashes, so it has small particles.

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You may have noticed that all types of soil have a different color. Some types may seem more red while others seem darker, like a brown or black. The color is determined by what is in the soil, more importantly the mineral iron or humus. If soil is reddish, it has iron in it. If it is brown, it has more humus in it.

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2nd Property of Soil= Ability to Support Plant Growth

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2nd Property of Soil= Ability to Support Plant Growth

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Obviously one of the things we use soil for is to plant flowers, crops, etc. If we want these plants to grow strong and healthy, we need good soil to plant them in. This means that the soil needs to be strong enough to hold up the stem and roots but loose enough to let water to pass through to the roots. The best type of soil for plant growth is called loam soil, which is a mixture of sand, silt, and clay soil.

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No, this is not the type of humus you eat. Actually, it would be kind of gross if you did eat this type of humus. From the pictures below, you can see that humus is dead or decayed plants are animals. There is a different amount in every type of soil. The amount in the soil changes the feel (texture) and the color of soil.