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sulphate of ammonia
hi all,
I just wanted to ask a question if I could. I have mentioned before that I can only find KNO3 in 25Kg bags but when I was up purchasing my trace element mix for my PMDD I found Sulphate of Ammonia... When i had a look at the chemicals on the back, it has 21% Ammonium as Nitrogen and 23% Sulphate I have done some research on the net and a chemical website says that it's 21% Nitrogen and 23% Sulphate as opposed to KNO3, which is 13% Potassium and 44% K2O (which I gather is 2 Potassium molecules bound to an oxygen molecule??)... Can I use this as my Nitrogen source? It's in a 2kg bag and would be easier than purchasing a 25Kg bag... I have read somewhere that Ammonium is the preferred source of Nitrogen for plants, so i'm thinking I should be safe... Also, my trace element composition is a bit different from the one listed on the krib, mainly the Fe is 1% lower... Does anyone think I should compensate for this by putting in some Chelated Iron (which I pick up from the local Kmart - a cheaper department store for non-aussies) for $4.00...? Thanks for any feedback. Justin. |
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#3
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Justin a écrit :
hi all, I just wanted to ask a question if I could. I have mentioned before that I can only find KNO3 in 25Kg bags but when I was up purchasing my trace element mix for my PMDD I found Sulphate of Ammonia... When i had a look at the chemicals on the back, it has 21% Ammonium as Nitrogen and 23% Sulphate I have done some research on the net and a chemical website says that it's 21% Nitrogen and 23% Sulphate as opposed to KNO3, which is 13% Potassium and 44% K2O (which I gather is 2 Potassium molecules bound to an oxygen molecule??)... Can I use this as my Nitrogen source? It's in a 2kg bag and would be easier than purchasing a 25Kg bag... I have read somewhere that Ammonium is the preferred source of Nitrogen for plants, so i'm thinking I should be safe... Also, my trace element composition is a bit different from the one listed on the krib, mainly the Fe is 1% lower... Does anyone think I should compensate for this by putting in some Chelated Iron (which I pick up from the local Kmart - a cheaper department store for non-aussies) for $4.00...? Thanks for any feedback. Justin. If I were you, I'd try a drugstore for you KNO3. They name it Salpeter and sell 250g bottles of it for about 3-4 dollars (that would be in the first aid section imho) |
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