Alot.

Basically, the buds are seed pods. If they are not pollinated they stay emty and that what you smoke. If it gets pollinated you get seeds in them.

So if you pollinate properly you wont have much smokable bud.
LIP Reviewed by LIP on . How much pollination reduce yield? I'm indecisive about how I should move on and thinking that pollinating and getting a yield of seeds would be a good way to go. I am also impatient and want some smoke. So how much do seeds reduce the yield? Rating: 5