Howzit bro bigger yeild yep thats what we all are after but if your growing outdoors I reckon a big factor on increasing overall size of your plants is the hole you dig for them I always dig a good size hole and fill with premo dirt (fert etc) I also find it helpful to put stone or gravel at the bottom which helps with drainage but as an old fulla once told me "the bigger the hole the bigger the plant!" also this old fulla would say "should be pounds per plant, Not! plants per pound" (if only I could acheive that) but it makes sence as the bigger hole means bigger roots meaning bigger plants its also good to put manure fert etc at the bottom of your hole hope this helps good luck!!