Better to think of natural capital and human labour being the two sources from which all value (in the sense of productivity) is ultimately derived. The soil is natural capital, the fertiliser is both (i.e. a mined and processed mineral resource), the rotation is human labour. Then the knowledge to reproduce this process in the correct manner is also critical.
No, natural capital is - soil particularly.
This person is correct. Land and the natural process of nature are free gifts.
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Better to think of natural capital and human labour being the two sources from which all value (in the sense of productivity) is ultimately derived. The soil is natural capital, the fertiliser is both (i.e. a mined and processed mineral resource), the rotation is human labour. Then the knowledge to reproduce this process in the correct manner is also critical.