Thanks for sharing this. Urine is good if used at once.

good one, but reckon they should be using it fresh as. mine gets used around twice a day.

len

Here is a link that might be useful: lens garden page

What are you guys basing that conclusion on, unless you've done extensive trials with both fresh and aged?

Nice site you've got there Len. A lot of info, but I'm not really into the permaculture thing just yet.

Since the subject came up, I admit that I urinate occasionally on my compost pile. If nothing else, it adds a little nutrient to break up the browns better.

pnbrown, I have read that the protein in urine turns to ammonia if it is allowed to sit.

Yep ammonia, which then can be converted to a usable source of N.

If it doesn't offgas first. That smell comes out of a jar of urine when you open the lid is nitrogen wafting away. IMHO it should be mixed with browns or put on the ground immediately so as not to lose nutrient value.

toxcrusadr,

That's what I thought, too. But apparently scientific method carries more weight than humble opinions.

Sincerely,
Allen456

If you're referring to whether 'aged or fresh is better', I don't have enough knowledge to say. But as far as what I stated above, I can pretty much guarantee that stale urine smell contains a variety of nitrogen-containing volatile compounds. That's not just my opinion.