The only thing like that I have heard of is this. Right before switching from veg stage to Flower statge have 24 hrs of complete darkness this will induce flowering faster. This info can be obtained in Jorge Cervantes book "Marijuana Horticulture the indoor/outdoor medical growers bible"
I know this doesnt answer your question but this is the only thing I have heard about 24 hrs of darkness.
D Rock Reviewed by D Rock on . Almost ready to harvest Hey guys, Quick question, have you ever heard of giving the plants a 24hr dark period before cutting the buds down? One of my mates told me i have to do it? Will post some pics tonight Peace out :jointsmile: Rating: 5