what i do know is you can make autos stretch, ive tried starting one in a pot that was shaded by other plants and it did stretch but it still started flowering at the same age as other plants of the same strain and it didnt increase yield,
the only way ive manged to increase yield in autos is to adjust the light schedule. kc45's grown under 20-4 and 24-0 was producing between 7g and 21g at the very most but only 1 plant hit the 21g mark, all the others was around the 1/4oz mark and i grew at least 15 of these under them schedules including males, all harvested at less than 1ft high
i grew the same kc45's under 12-12 from seed and yields where around the 2oz mark and plants reached 1.5ft to 2.5ft in total including the males,
so thats what i found with the kc45 but that could be anything or it could be nothing, other strains may and will probably differ.
but from the results i got i came to the idea that maybe autos start flowering due to age in hours and not age in days,
so lets say for example and auto needs 240 hours of light to reach harvest,
under 24-0 that would be 10 days
under 12-12 it would be 20 days,
now as the kc45s i grew produced more under 12-12 and doubled in size they also took 3 weeks longer to reach harvest and they took 2 weeks longer to start flowering,
so do autos grow according to age in days, or do they grow according to age in light hours, now where autos grow they dont have seasons as such, they have long growing seasons and short growing seasons so the light hours are not the same as where regular cannabis grows, so autos flower not by photo period but by some other means, so is this other means age in days or age in hours,
the kc45 leads me to believe that autos flower due to age in light hours, every auto ive grown under 24-0 and 20-4 produced very poor, ive had autos reach 6,7 or 8 inches and their done and harvested, i grew the purple cheese auto under 17-7 and again i got about 3x 8ths off it, so not much, would i of got more if i grew it under 12-12, i just dont know, this is why i got a kc45 male auto producing pollen which ive been collecting the last few days, ive got more kc45 autos growing under 12-12 and again their getting much bigger than when they did under 20-4, ive also got a auto bubble fem growing under 12-12, so ill be making some auto seeds so i can run more tests as well as trying to produce a nice cheese auto strain like gdp cheese auto,
so once ive got plenty of auto seeds i can play around and try different things, as ive followed harleys journal ill run side by side grows with the seeds and top 1 plant and not top another and see what happens, again ill do this with the fim as well, but my goal is to create an auto that has a longer grow time but produces much better, so ill be making the auto gen weaker but ill need to back cross to keep it an auto but im a long way off from that yet,
my main goal is to find out how autos wotk and why, if they flower due to age in days then why do autos do poor under 20-4 and 24-0, it could just be that ive bought crap autos that dont produce well, but that would not explain why the kc45 does a lot better under 12-12, i was getting around 1/4oz under 20-4 and 24-0 but under 12-12 from seed to harvest i was getting bigger plants with more branches and bigger yields around 2oz,
so ill produce my own autos seeds and many of them, then ill grow a few at a time under 20-4 and then under 12-12 and ill have a good idea of whats going on that as ill have a bigger test group to work with,
but dont let me put you off testing on your auto, if you want to top then why not go for it, it might work out well, it just depends how much grow time your auto has got, if it flowers early then you will reduce yield, but if its in veg for 6 weeks or more then it may increase yield but you will have stunted growth for at least 7 days while the lower nodes grow.
when you top or fim a clone they recover pretty quick as the clone is the same age as the plant it came off so growth at nodes starts pretty quick, but with seedlings you will notice that the plant needs to reach 4 or 5 nodes before side branches actually start growing, where as clones grow side branches as soon as its grown past the node, so topping or fimming seedlings will stunt growth a lot more than it would if it was a clone of the same size.
i run test with autos then ill be able to understand whats going on and if their flowering due to age in days or age in hours,
now ive grown autos under 24-0, so if they do grow according to age in days then why do they flower under 24-0, surely if the plant is not getting its day and night cycle then it dont know its 1 day old, but autos still flower under 24-0 and flower sooner under 24-0, so this really does lead me to think that autos flower due to age in light hours and not due to age in days, if it was age in days then under 24-0 they would stay in veg until you give them some dark period which they dont do,
so if it was say age in days then the plant only knows its a day old when the sun sets and rises again, then it knows its a day old, but under 24-0 it cant tell how old it is yet they still flower, so it really does look like they flower due to age in hours of light and not how many days old they are, this would explain why im getting better yields off 12-12 as the plant is only getting 12 hours of light per 24 hours, and we also know plants grow and stretch when the lights are off, so is 12-12 allowing them longer to grow as their getting less light hours over a longer period, plus in the night the roots are growing and the plant stretches to find the light,
so im leaning towards autos flowering due to age in hours of light, if they did flower due to ages in days then putting them under 24-0 would keep them in veg as without the night period they would not know its a day old,
hopefully ive not confused anyone,
dharma if you want to try topping then go for it mate, you will have another auto to grow in a few days time so if it dont work out you can just plant the other one, if it does work out then even better,
i dont want to influence anyone, i like to work things out myself, so once ive produced many auto seeds which will be soon as ive got plenty of auto pollen now, then i can run side by side tests, ive followed harley's journal and he got a nice auto, but their is no way of knowing if he would of got another 1/4 to 1/2oz off it if he had it in bigger pot and didnt do anything to it, or did he increase yield by what he did, without running a side by side test we will never know, plus some autos like big bang auto hit 4oz each plant so maybe he increased yield using his method or maybe he decreased yield by doing what he did,
i cant judge him, im going to try it myself to see what works and what dont, but i know it would need to be an auto that has a decent amount of veg, which most autos ive tried just dont have, ive tried probably nearly 20 different autos over the last couple of years and ive always grown them under 20-4 and 24-0 as i was told not to use any other schedule as it would stunt growth, but i had my lights on 12-12 and decided to grow an auto to get a quick harvest, then i was shocked at how big the plant get, i ended up with 4 x 1ft buds on the 12-12 auto where as on the 2-04 and 24-0 the whole plant weighed less than 1 of the 1ft buds,