Gardening

Types of Substrates: [Concept, Characteristics, Natural and Artificial]

Substrates are solid materials that serve as the basis for plants or animals to live and develop. Their composition is very varied depending on the ecosystem where they develop.

Within gardening and agriculture, it is very useful to know its composition since it is basic for the initial phases in planting plants , before transplanting to the garden or to the field.

Do you want to know more about it and what applications it can have in your orchard and / or garden? Well let’s start

What is the substrate?

Substrate is the solid surface that is used to grow a plant.

It differs from everyday soil in that it is much more aerated and contains more organic matter, reaching levels of up to 80% of the latter.

It is also much lighter, which helps the water drain easily and the roots of the plants adjust to their liking.

The formation of substrates can be done through different ways , so it is worth studying their characteristics in depth.


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What types of substrates can we find?

Substrates can be classified into two broad groups: natural and artificial.

Natural substrates

Natural substrates are those obtained from living matter subject to decomposition.

Artificial substrates

The artificial ones are those that must be worked through certain procedures.

To classify substrates in one or another group, their physical, chemical and biological characteristics must be considered.

What properties does the substrate have?

Next we are going to comment on the different properties that a substrate can have: physical, chemical and biological.

Physical properties 

  1. Porosity : consists of the presence of air that the substrate has and that is generated by the free spaces of solid matter in it.
  2. Density : it is the space that the substrate tends to occupy, taking into account both the solid component and the air.
  3. Structure : refers to the type of shape that the substrate adapts. In most cases it is granular, and the fibrillar can also be found.
  4. Granulometry : refers to the size of the particles that the substrate contains and that will vary with certain stimuli, such as humidity.

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Chemical properties 

The chemical properties are those that facilitate the transfer of nutrients from the substrate to the roots of the plants.

Also included are elements that cause degradation of substrate components and release nutrients.

Biological properties

Biological properties are the activities that other microorganisms have and that become detrimental to the growth of plants.

Through these elements, the plants’ access to oxygen and other nutrients that are essential for their growth can be restricted .

What are natural substrates?

Natural substrates are those that are obtained through nature, where there is almost no need to modify their structure.

Among the main substrates of this group we have:

Sand

It is one of the most used because it is very easily achieved.

At the granulometry level it is excellent and has a good level of porosity. Depending on the types of sand, river sand is the most favorable for any sowing.

Gravels

They are much more compact substrates than sand and this prevents them from having good drainage. However, its level of porosity is high and it becomes very positive.

They are little variable in time so they allow a good work in sowing.

Volcanic gravel

It is one of the most interesting natural substrates because it already contains within its composition some of the nutrients that plants need to develop.

It has very good drainage.

Water

It is usually used as an initial substrate in the case of some plants that need high levels of humidity to develop.

Mobs

There are two well differentiated types: the blondes and the black ones, and each one has a determining condition at the time of sowing.

Blondes have more organic matter, but blacks are more stable. Your selection will be based on the type of plant to be grown.

Although these are the most common types, you can also find others such as coconut fiber, manure , worm castings , among others.

What about artificial substrates?

Artificial substrates are those that contain a series of very specific properties that help balance the natural ones.

They are achieved after modifying, in some way, a natural material.


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Last update 2021-06-10 / Affiliate Links / API Images for Affiliates

In this group we find:

Perlite substrate

It is a material whose main properties are good porosity and high capacity to retain water.

Expanded clays

They allow the final porosity of the substrate to increase, although the problem they present is low water retention.

Vermiculite

At the beginning it has good levels of porosity and water drainage.

However, after a while their porosity is lost due to the coupling that is generated between them, as occurs with sand when it is compacted.

How are substrates classified according to their properties?

According to their properties, substrates are classified as chemically inert and chemically active.

Inert substrates

The inerts are those that exert a support work for the plants, but do not generate any type of action on their nutrition.

An example of this type is expanded clay.

Active substrates

On the other hand, the chemically active ones are those that act as a support, at the same time that they offer some type of nutrient for the development of the plant.

In this case, a good example would be mobs.


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Last update 2021-06-10 / Affiliate Links / API Images for Affiliates

What are the advantages of the substrate?

Substrates have a series of characteristics that are very beneficial both for plants and for farmers or gardeners.

Here we find:

  1. As they are assembled based on the potential needs of the plant, they are usually clean of all kinds of disease.
  2. They help to take advantage of the spaces where the land has already been very cultivated and they do not have good conditions.
  3. They make it easy to maintain the correct levels of humidity and nutrients according to each case.
  4. They promote the numerous harvesting of fruits.

Substrates have become indispensable to ensure that plants have optimal growth from seed .

In fact, for the most experienced farmers, the substrate is a key part before proceeding to transplant the plants.

This helps the results after starting to be much more efficient than when sowing seeds directly into the ground.


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Last update 2021-06-10 / Affiliate Links / API Images for Affiliates

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