Currently, thousands of farmers around the world are starting to use rock flour in the production of their food. The chemical industry is already processing rock flour and has put it on the market under different trade names, such as rock phosphate with a high content of this essential element for plants.
At present, universities have become true points of sale. Many of their agronomists and professors seem more like an advertising catalogue of supplies and recipes than people capable of suggesting healthy things in order to get out of the current crisis the farmers are experiencing. In this case, instead of teaching the farmer to identify and dissolve the rock, they continue to give recipes for purchasing rock flour.
CLASSIFICATION OF ROCKS
Rocks are aggregates of various minerals, although they can sometimes be made up of a single mineral. Rocks can form in many different ways and at different depths. Once formed, they outcrop. They are found all over the earth’s surface.
Depending on how they are formed, rocks are divided into three main groups:
Igneous rocks are formed when molten rock material cools and solidifies. Depending on the cooling conditions, the rocks can be coarse-grained or fine-grained.
Sedimentary rocks are made up of transformed materials, formed by the accumulation and consolidation of pulverised mineral material, deposited by erosion.
Metamorphic rocks are rocks whose original composition and texture have been altered by heat and pressure. This process is called rock metamorphism.
How can you identify which type of rock is the best?
We will not talk about sophisticated laboratories for rock analysis, as these are very expensive and unaffordable for farmers in all countries.
Thus, we have to use practical and simple methods, and one of those methods is through the observation of rocks. Each farmer or professional who is devoted to this exciting subject has to look at the rocks and analyse them very carefully.
- The type of vegetation and its behaviour on top of the rocks are clear parameters that we take into account to be able to state whether the rocks
are rich or deficient in minerals that are essential for the development of any plant.
- Colour is another essential aspect to be taken into account, as it is possible to identify what minerals they contain, according to the colour.
This article was originally drafted by Walter Carvallo Mendoza.