How do I get Female from seeded

Ok guys, I have some seed from my left over grass so I decited to grow them for 3 weeks now every thing looks ok for now but I want to know what chance For me to get the female and also what is the factor to get female from seed ed remember it's not the top qulity seed it's just A seed from left overalso does Ph of soil will effect the female chance please help

Its rumored that more blue spectrum light, a tiny bit more nitrogen and i think, cooler temps are 'supposed' to help promote the likelihood of getting a female..
But ive yet to see real evidence..

The way i see it is its luck of the draw...50/50
My plants all have the same condtions, sometimes i get fems, sometimes i dont.

There's a thread about the sex predisposition of seeds...def worth checking out.

Yeah its pretty much a toss up, with perfect conditions it encourages females, and will decrees the likely hood of a plant going hermie. So thats always good.

I'm pretty sure its predetermined, i.e your seeds are either male or female from the outset. I think using a female thats hermied to pollinate a female produces feminised seeds...maybe...i think...

Otherwise environment is just gonna change female to hermie...i think.

Here's the link the the seeds predisposed sex thread..

https://www.rollitup.org/advanced-marijuana-cultivation/36597-seed-predisposition.html

what is the nutration for plant nitrgen?

????
You mean how do you supply extra nitrogen??
Use sulphate of ammonia or look for an organic way of supplying it.

BEWARE it is very easy to OVERDO nitrogen..and that can be bad.