Inorganic fertilizers can be made from artificial, synthetic chemicals. Natural fertilizers can be made from naturally occurring organic substances. Although this is an oversimplification, it can be confusing at times.
For centuries, fertilizers with high nutrient levels have been used in agriculture. Some crops, like seaweed or peat moss, can be used as fertilizers directly. You can find natural silicon compost at reasonable prices by comparing prices online.
Inorganic fertilizers can contain synthesized chemicals that are not naturally occurring and therefore can be dangerous. Chemical contamination is most common when it rains. The rainwater runs off the fertilizers and the soil.
Organic fertilizers can be equally effective in encouraging harvest growth. Organic fertilizers can be diluted by biomass, whereas synthetic fertilizers tend to be more concentrated.
This means that you will need to use more natural fertilizer in order to achieve the same effect as using a smaller amount of artificial fertilizer. This can also mean that nutrients are slowly released to the soil, and at a slower, more consistent rate over the course of the plant's life cycle.
Organic fertilizers are very good for plants. You can search about the benefits and uses of fertilizer online, then select the best organic silicon fertilizers for your plants.