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Tried posting this on List of organic N:P:K values....by Nicos without any success
Due to being a big seaweed user now, thought better look into the salt (sodium)limits
Link below gives seaweed nutrients, note kelp is lower in sodium if using a lot or on salt sensitive plants
Seaweed.ie :: Chemical composition
Below is table (on page 5 + 6) of vegetable, fruit trees, nut trees, etc salt sensitivity
https://digitalcommons.usu.edu/cgi/v...ension_histall
By my workings, very happy to be corrected
1dsm is 550ppm so at 30cm deep a 1 metre square area can have 165cm3 of salt
Taking worst seaweed at 3.5% then get 4714cm3 seaweed
So in theory a sensitive strawberry is ok to have up to about 4.7kg m2 of bladder seaweed. Can double that for kelp and more if high rainfall as sodium is mobile and washes out soils. On other hand if not mixing in 30cm then needs reducing.
I have not put any on sensitive 1.0 crops (Strawberry, Raspberry, etc) yet but may well start
Due to being a big seaweed user now, thought better look into the salt (sodium)limits
Link below gives seaweed nutrients, note kelp is lower in sodium if using a lot or on salt sensitive plants
Seaweed.ie :: Chemical composition
Below is table (on page 5 + 6) of vegetable, fruit trees, nut trees, etc salt sensitivity
https://digitalcommons.usu.edu/cgi/v...ension_histall
By my workings, very happy to be corrected
1dsm is 550ppm so at 30cm deep a 1 metre square area can have 165cm3 of salt
Taking worst seaweed at 3.5% then get 4714cm3 seaweed
So in theory a sensitive strawberry is ok to have up to about 4.7kg m2 of bladder seaweed. Can double that for kelp and more if high rainfall as sodium is mobile and washes out soils. On other hand if not mixing in 30cm then needs reducing.
I have not put any on sensitive 1.0 crops (Strawberry, Raspberry, etc) yet but may well start
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