W11.Day.2(76)
โโYesterday, I flushed the soil with 15 liters of spring water with a fixed pH, in order to then apply a lower concentration of the current fertilizer plan. I believe it's best to reduce the amount of fertilizers, as the top leaves are starting to burn. After flushing, the girl drinks well. However, it's challenging to maintain the drainage pH within the range of 6.5-6.6. I don't yet understand the processes occurring in the soil, but the instances of increased pH levels are growing.
โโAnd I revised the week of the beginning of flowering from 5 to 4.
โโAnd replaced lights - 72 w goes to top, 108 w goes to bottom to increase low buds development.
W11.Day.4(78)
โโJust implemented removable black background in growbox. It's time to make some photos.
โโI've also switched from a local PH down manufacturer to Terra Aquatica because I found that the PH down from the local producer loses its acidity over time, while Terra Aquatica does not. Unfortunately, a week with the previous PH down has already been lost (it was during this time that I was struggling with a pH increase to 7.4 in the drainage).
Now, Jessica is drinking more and better. The lower buds are also actively developing.
W11.Day.5(79)
โโI think i will start flushing before harvest on next week.
I like the craftiness ๐! I have made good experiences with Scr.o.G ing and lights under the canopy. Would only add them in flower though, I had added somewhere around 90w at 30 cm distance on a lollipopped plant. No fluff or popcorn buds anywhere to be found.
@MyDearDiary, always a pleasure, but again, itโs mostly about the individuals preferences. I just wanted to highlight to you that from my perspective there should be no issues to start carefully removing old leaves, without worrying that youโll stunt your plant. The more you grow the better youโll be able to read your plants. Seems like the curiosity is there already ;) any other questions, you can always DM me directly, if I can, Iโm always happy to help.
@Salokin, Thank you very much for this article
It seems that in a home setting, it's quite challenging to determine the photosynthetic activity of leaves and identify the moment it decreases. Making such decisions should be based on experience and the age of the plant and its individual leaves. I would be happy to conduct a series of studies.
Is there a university somewhere that studies marijuana growth? ๐
@MyDearDiary, hey growmie, I read this a while back, which was studied on sativa plants and their leaf photosynthesis rate with age
โ Compared with the maximum estimated y-intercept value, Amax and Rd decreased by 50% and 75% after approximately 9 and 28 days (Figure 1 and Figure 2). Similarly, Ls and ฯCO2 decreased by 50% and 75% after approximately 8 and 22 days. Although photosynthetic capacity declined steadily after leaf full expansion, we note that the compensatory metabolic activity of Rd decreased.โ
Full paper here https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7076434/
A wouldnโt deny that a mature leaf has a higher photosynthesis rate, however, as soon as maturity is reached the rate will go down, but also their metabolic consumption.
what is nice colour for your eyes, maybe far away from spectrum plant needs.
What ever cool leds you would use, they still heat up, that will play up with plant, because they touch each other.
output of such strip will make maybe brighter for your eye, but wont bring any countable result. through all strip its 10-15 W maybe, so what it brings ??? plus spectrum ;)))
i thought its one of photo contest attemps, but by your description - you are serious with it.
Hope it will work for you, but by pure math and facts - it should not.
All the Best !
@AsNoriu, The issue of temperature is not a concern for me, as I regularly use an infrared thermometer and make sure everything is within acceptable limits. Besides, the garland doesn't operate throughout the entire light day.
I treat this as a fun experiment.