Grow Your Own Magazine

hi. can anyone tell me the strenght of pure potassium nitrate. as in NPK ? I can get my hands on some for my toms etc, but would like to know what i'm playing with thanks.

I know a Copper Nitrate is £9-50 an hour

Seriously,

I'd think long and hard before you start using straight chemical fertilisers like these, you have to know what you are doing or you'll burn all the roots off your plants.

Depending on the purity of the Potassium Nitrate you are looking at 13 - 14% N and 44 - 46% K but if you just feed with this you will be missing loads of trace elements as well, Far better to soak a sack of sheep shi ... er manure i a water butt and use that

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ntg

Never be afraid to try something new.
Remember that a lone amateur built the Ark.
A large group of professionals built the Titanic

http://grief-encounters.blogspot.com/

http://en.wikipedia.org/wiki/Potassium_nitrate
Read all about it.
Its an E number - E252

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Et tū, quis es?

I work with chemicals on a day to day basis and would seriously recommend that you get rid of it at a suitable council disposal site!

In theory, if it is 100% pure, you'll get 100% N and 100% K. You'd have to mix it into the appropriate volume of distilled water to get the desired concentration. This would also have to follow EU farming guidelines (codes of good practice) to avoid a run-in with the law.

There is a hefty amount of legislation covering potassium nitrate because it is the basis of terrorist bombs, so if you're thinking of getting rid of it, let the council know and they can advise you.

It's also a bit hazardous to have around, despite being inert, if you get it with other stuff like ******, through a spill then it will explode.