On 20/08/2014 21:53, polygonum wrote:
On 20/08/2014 08:51, harryagain wrote:
"polygonum" wrote in message
...
On 19/08/2014 19:45, harryagain wrote:
It was all needed, there was no other source of plant nutrient. back
then.

Considerable quantities of seaweed have been used in coastal areas for
many centuries.

And inland?


You claimed that horse **** was the only source of plant nutrient.
Obviously horse **** was only available in areas that were inhabited by
horses. Same sort of thing with seaweed - would be used were feasible.
Other substances would be used as available, for example, guano. And let
us not forget things like nitrogen fixing bacteria in root nodules of
legumes.


One of the best general fertilizers is fish, blood and bone.

--
Colin Bignell