Looks pretty bad. Is it a female? If it's a male, or if you don't know its sex, I'd seriously consider just starting over with some new seeds; that plant looks like it's seen enough hard times that it isn't going to yield much unless you nurse it and baby it for a month or two -- by which time you could have a whole new healthy generation flowering if you plant some seeds now (and don't fry them with nutes, heh).