Soil fertility for plants in reality is a very simple affair but difficult to explain. There are no miracle fertilizers, only plain and simple chemical nutrients, that are absolutely essential for plant growth. In moist sand loams plant nutrients are generally more accessible than in silt or clay soils although clay soils contain higher fertility resources. Nutrients became restricted or unavailable, in very wet or very dry soils for obvious physical reasons such as a lack of root absorption by most crop species. Plant nutrients, divided into macronutrients and micronutrients are indistinguishable, whether they are from organic or chemical sources. All must be water soluble in order to enter plant root systems.

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