oh its now gained attention. i thaught it was an old hash producing trick ment to make the pplant take up less water, which dont make sence.
i found this
Splitting Stems: Should You Take A Knife To Your Cannabis Plant?
Taking a knife to your cannabis plants a few days before harvest seems pretty counterintuitive. However, many growers say stem splitting can produce bigger yields and more trichomes for tastier, more potent bud. Read on to learn more.
44 7
20 Jun 2019
Stem splitting is a very aggressive grow technique that’s generating a lot of discussion in the cannabis cultivation community. Those in favour of this technique argue that it stresses the plant in a beneficial way, forcing it to take up more nutrients and produce bigger, more potent buds. Could this be true? Keep reading to find out.
THE THEORY BEHIND STEM SPLITTING
Most grow techniques that involve stress work on the same principles; stressing a cannabis plant encourages it to take up more nutrients, which in turn results in more vegetative growth and heavier harvests.
The theory behind stem splitting is no different. However, it’s a lot more controversial than other high-stress techniques such as topping, fimming, or super cropping. After all, taking a knife to the stems of your flowering cannabis plants is pretty hardcore.
Nonetheless, many growers suggest stem splitting can produce bigger, denser buds and a higher concentration of trichomes.
Trichomes actually serve to protect the cannabis plant against
pests, environmental factors, and disease. Growers believe that the stress induced by splitting your plants at the end of their
flowering cycle pushes them to produce more trichomes just in time for
harvest.