Have you split stem of Autoflower before harvest?

Scientifically and botanically IMPOSSIBLE! It will not do either of these 2 things! Why stress your plant right before harvest and after weeks/months of careful growing?? Extended darkness will just slow your plants metabolism, possibly leading to trichome degradation, not enhancement. You should aim for harvesting a happy and normal plant. After 3 decades of experimenting with harvest timing, I believe 1-2 hours after sun up/lights on to be best for terpenes and trichome quality. Just let your plant think everything is normal, no days in the dark or other type of weird shit, then chop. Hope this helps,........... Organoman.