To this should be added the development of natural resources such as peat, seaweed, minerals, and water power—at present virtually untapped.
It encourages something known as eutrophy, which is different from atrophy: it means that everything grows more vigorously, including seaweed.
For instance, the difficulties in managing highly migratory species such as tuna are completely different from those for harvesting seaweed or some species of shellfish.
It would be uneconomic to collect seaweed on any large scale and process it for agricultural purposes.
The results suggest that the commonly recommended use of seaweed extract for organic pasture management can be detrimental to biomass production unless sufficient nitrogen is provided.
There was no consistent evidence to support the idea that seaweed extract increases yield.
The effects of seaweed extract are worthy of further investigation.
Several authors16,26 argue that seaweed extract is not an effective means of increasing yield.
