Low biuret urea?

[loneroc1]

Howdy all!

Can anyone tell me if biuret damages all parts of citrus trees, or just the leaves?

I have a lifetime supply of a generic 30-10-10 soluble acidifying fertilizer à la Miracid.  I don't know its sources of nitrogen but I've used it on citrus roots many times without obvious damage. What type of nitrogen did acid fertilizer contain 25 years ago? That's when I picked up 200 one pound packages of the stuff.  I transferred them to 5 gallon buckets and don't have the original label.  It was a great deal.  Through a weird combination of a sale and rebate the store paid me a buck and a half for each box I "bought".  Needless to say I took all they had and made $300 in the process. I still have about 50 pounds.  Which should last me a while.  Thanks! Steve H

[Millet]

Biuret damages only the trees leaves.  A portions of the leave loses its chlorophyll, thus photosynthesis is reduced. Without a label I have no idea what type of N your fertilizer has.

[loneroc1]

Thanks!  I won't worry then and will keep using it for ground application.  Steve H.

[brian]

I can't find my original post from the old forum, but I investigated this once.  I contacted Scotts, which owns Miracid/MicracleGrow.  The biuret content of this product is a bit over the recommended tolerance for citrus, I forget the exact details though.