haha thats the kinda nutes i'd use on a plant i would never intend on smokeing, but throw the bag on the table and watch all my buddies smoke it, while i smoke some good shit and laugh my ass off at them. muhahaha.
Taking a piss in soil is usually good for plants, its acidic but full of nutes none-the-less. But semen? I don't think so... Just don't tell anybody you have if you do, nobodies gonna want that green!