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Soil Part I: Seaweed Fertilizer

I am frequently drawn to write columns about soil, due to its vital importance as a national resource as well as the fact that we treat it so poorly. In this column, I will weave together some of the points I have made in the past and also explain why we should consider using seaweed-based fertilizers.

First, let’s talk about soil. An ideal soil has approximately 50% of its volume filled with solids and the other 50% with water and air. Ninety percent of the solids should be minerals, basically eroded rocks, and 10% should be organic matter such as decaying leaves. The spaces between the solids accommodate water and allow air to reach plant roots, a vital step in plant growth. Healthy soil is the most biologically productive environment on Earth. A single gram of soil can contain up to a billion organisms, representing over a thousand species.


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