Turns out human urine is a great source of nitrogen, potassium and phosphorous.
It must be said that Sue, a avid gardener, and her brother who has a degree in biochemistry and who is currently outside tending to the vegetables here on the Big Island are “highly skeptical” about this.
Urea, one of the major components of urine, is the primary nitrogen fertilizer used around the world. But the commercial version is made from natural gas. According to Wiki, urine does also contain potassium and phsophorus. (http://en.wikipedia.org/wiki/Human_urine). However, I’d be worried about the level of salts building up.
One of g’da’s tricks to keep the deer out of the asparagi 😉