Fertilisers for the garden. The 'organic method' has become popular.
Entirely organic fertilisers are preferable to chemical fertilisers, which tend to offer partial and impermanent results when compared to a consistent and careful application of the organic gardener's knowledge of how to make and apply fertilser.
'Chemical soup' is undesirable because it is difficult to predict the chemical cocktails that are produced when we introduce synthesized and or extracted chemical additives to our living soil.
The idea of 'living soil' is important since the action of a fertiliser is dependent on these little guys.Microbes, and particular microbes with particular interactions with each other and the surrounding soil are important to the processes that make nutrients available to plant roots.
The twist in the tale comes in when we realise that many purportedly organic fertiliser products may be organically based but they contain a chemical additive. This doesn't help. What one is working with are living organisms and dousing them in the compounds we think they need rather than creating the conditions in which the natural chemical reactions of life takes place is the only real way to achieve balance in your soil.
The quick fix offered by certain chemical recipes is an illusion and if you fall for it you will find yourself constantly amending your soil as it just gets weaker and weaker. Organic gardening and farmng is all about helping natural processes to achieve their most productive balance.