Soil Food. As plants grow over time, they take nutrients from the soil that must be replaced in due time. Over time soil becomes compact due to environmental condition and it needs to be loosened. And perhaps most importantly, all living organisms present in the soil needs a change, a boost in their environment or soil food replacement. All these cant be done without routine addition or replacement of various kinds of soil food. Soil Food consist of not just fertilizer but different types of organic matter, which may not contain all the nutrients but instead will enhance the structure of the.