we are told that the alkaloid production in Kratom plants is a self-defense mechanism keep the plant from being eaten by bugs. First off I'm not sure how anyone would really know that be the case. But let's assume that is true. I have also read that based on that theory harvesting Leafs off the plant cause the plant produce more alkaloids as a self-defense reaction.
If all that is true then by Theory, going along and cutting the leaves in half would increase alkaloid production because the plant is under attack. Maybe not even in half, maybe only cutting off 20%.