'Thanks for sharing'
'Thanks for sharing'
Quote:by Mistress'
yes, if flower entire cycle on 8/16, >total light rec'd.
key is to change light regimes @ different stages of maturity.
from 24/0 to 20/4 to 16/12 to 12/12 to 12/16 to 8/16... ~~~...
ideally, each specific cultivar should have its own compartment to test its photoperiod. starting @ 24/0 & moving down by 15 min per day, until length of dark that steadily produces fruit is reached.
this requires effort...
why only 8/16? during final wk or so?
may plant has plenty of energy stored... plant makes & stores energy by way of photosynthesis. during final ripening, dont want plant to be making storing sugar, but distributing sugars to fruit. this generally occurs during dark cycle... temps affect rate of metabolism (cell activity). so slightly higher night temps will permit stored energy (that has accumulated during season, also known as 'salt build-up') to be given to flowers...
not desiring 'growth' during ripening of fruit. growth occurs during 24/0 veg cycle, to get trees ready for heavy tomatoes
Hey Mistress,
Yeah 18/6 light cycle will help the bud mature a little quicker toward the end 'ie' the last week during flush, by then the plant has put on most-all of its weight anyway so i cant see you losing much if any in yield, but it does cause me to get airy/lose buds. I have found a better faster and fuller fruiting response switching light cycles from 24/0 or 20/4 to 12/12, rather than a gradual shift. It seems like the shock of an instant long dark period produces a more speedy & robust Bloom response(speaking from experience). The term 'Salt-Build up'-I Thought' is used to describe an excess of salts (nutrients) that may have built up on a medium over a period of time, due to not flushing your medium. Rockwool for instance will accumilate a layer of salt on its surface if not flushed regulaly. This layer of salt will also accumilate anywhere around the resevoir, pipe's & outlets etc 'oh yeah & kettles. Ive never heard of the plants stored energy reserves/Excess referred to as 'salt build-up' before but i suppose it could be referrered to as a salt build up.
I always keep a heater on the other side of my intake vents which has a thermostat & is kept running at a constant 74f, temps do fluctuate slightly, but it never drops below 70f lights-off', this helps regulate and increase the metabolic rate of the plants.(my temps are mostly at a constant 74f lights on & off)
I am very interested in the studies where the dark photoperiod is kept at a constant 12 hours and the light 'PP' is increased ie- starting at 14/12, 16/12, or 18/12 now this is where it gets interesting. Have you any links to any studies Mistress?? Someone also pointed out that they increase the lumen intensity while decreasing the amount of Light hours the plants recieve ie- 14/10, 16/8, they just double the light output from 1000w - 2000w. I think this would compensate for the lack of light hours! and they report no loss in yield using this tec-i would go this way!.
Thanks for the sharing 'Mistress'!!
Be-Lucky..............Scroger!
'Thanks for sharing'
Quote:by Mistress'
yes, if flower entire cycle on 8/16, >total light rec'd.
key is to change light regimes @ different stages of maturity.
from 24/0 to 20/4 to 16/12 to 12/12 to 12/16 to 8/16... ~~~...
ideally, each specific cultivar should have its own compartment to test its photoperiod. starting @ 24/0 & moving down by 15 min per day, until length of dark that steadily produces fruit is reached.
this requires effort...
why only 8/16? during final wk or so?
may plant has plenty of energy stored... plant makes & stores energy by way of photosynthesis. during final ripening, dont want plant to be making storing sugar, but distributing sugars to fruit. this generally occurs during dark cycle... temps affect rate of metabolism (cell activity). so slightly higher night temps will permit stored energy (that has accumulated during season, also known as 'salt build-up') to be given to flowers...
not desiring 'growth' during ripening of fruit. growth occurs during 24/0 veg cycle, to get trees ready for heavy tomatoes
Hey Mistress,
Yeah 18/6 light cycle will help the bud mature a little quicker toward the end 'ie' the last week during flush, by then the plant has put on most-all of its weight anyway so i cant see you losing much if any in yield, but it does cause me to get airy/lose buds. I have found a better faster and fuller fruiting response switching light cycles from 24/0 or 20/4 to 12/12, rather than a gradual shift. It seems like the shock of an instant long dark period produces a more speedy & robust Bloom response(speaking from experience). The term 'Salt-Build up'-I Thought' is used to describe an excess of salts (nutrients) that may have built up on a medium over a period of time, due to not flushing your medium. Rockwool for instance will accumilate a layer of salt on its surface if not flushed regulaly. This layer of salt will also accumilate anywhere around the resevoir, pipe's & outlets etc 'oh yeah & kettles. Ive never heard of the plants stored energy reserves/Excess referred to as 'salt build-up' before but i suppose it could be referrered to as a salt build up.
I always keep a heater on the other side of my intake vents which has a thermostat & is kept running at a constant 74f, temps do fluctuate slightly, but it never drops below 70f lights-off', this helps regulate and increase the metabolic rate of the plants.(my temps are mostly at a constant 74f lights on & off)
I am very interested in the studies where the dark photoperiod is kept at a constant 12 hours and the light 'PP' is increased ie- starting at 14/12, 16/12, or 18/12 now this is where it gets interesting. Have you any links to any studies Mistress?? Someone also pointed out that they increase the lumen intensity while decreasing the amount of Light hours the plants recieve ie- 14/10, 16/8, they just double the light output from 1000w - 2000w. I think this would compensate for the lack of light hours! and they report no loss in yield using this tec-i would go this way!.
Thanks for the sharing 'Mistress'!!
Be-Lucky..............Scroger!
