you must be talking bout outdoor growing. cuz ive heard many ppl do that b4 harvesting.
No I beleive hes probly taking about MOTHER Nature, another words was the cannabis plant ment to be put into darkness for 3 days, No it wasnt, this being said man has already altered the plant quite a bit and I feel anything that increases quality is ok by me, even if it is un natural since almost every aspect of growing in this day and age is un-natural.
but really its not about what is rite or wrong, everyone has there own method and if it works why change it...
I have never heard of this method but it does make sense because it does take the nutes back down to the roots, but more important to acomplish this is just let the soil thoroughly dry out and this draws out best, with the lights on so it continues to use up all its stored energy..
What I have herd alot is to give them 72 hours of darkness to induce flowering quicker, I have tried this and it does work well, it doesnt cut your flower time down at all tho and it makes the plant start flowering a week or 2 earlier, So I stopped using it just cus I like taking advantage of the stretch and like the pre flower veg but once again everyone likes there own method