Im sure its not new, but i got the idea from fine wine vineyards. They make the conditions less favorable for the plants producing fruits. By letting them dry out. Not wilted dry but close. This forces the vines to work harder on their fruit. The end result is better, more concentrated higher brix grapes. This is science, its been proven. So i decided to try it. I must say. Im seeing more frost, firmer more dense buds.