neverforget4/20
Member
Who here has confirmed that your plant absorbed Si as a result of your application? Before and after sap analysis? ANY ANALYSIS?
Who here has confirmed that your plant absorbed Si as a result of your application? Before and after sap analysis? ANY ANALYSIS?
As far as anecdotal evidence, I've always noticed stiffer and more brittle stems when adding potassium silicate. Less need to stake them, but easier to snap. Branches have a lot more "give" when i dont use it.
silicic acid is the only form of silica that roots are able to absorb.
potassium silicate is not bioavailable for the plants....at least not in the cannabis lifecycle.
I doubt you're growing the quality I am, No offense. The contamination you have is covering up the effects of the silica.
That said, I do know that Si applications (both foliar and root applications) will thicken the cell walls of plants (measured by higher concentrations of Si and metal cations found in treated plants) and thicker walls make it harder for a plant to fall prey to disease and vector attacks. This bit of info we all should should know and accept as fact.
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You know this how?
To accept your assertion "as fact" an mj relevant citation should be provided.
silicic acid is the only form of silica that roots are able to absorb.
potassium silicate is not bioavailable for the plants....at least not in the cannabis lifecycle.
You know this how?
To accept your assertion "as fact" an mj relevant citation should be provided.
google "potassium silicate application study" Tons of university research has been done on this. Actual controlled studies.
You probably won't get much real data on stoner forums. Mostly anecdotal evidence at best. People parroting misinformation they read elsewhere at worst.
Ahh so many to choose....let's try this one--
Silicon is absorbed from soil as monosilicic acid [(Si(OH)4] by plant
roots, transported throughout the plant tissue via transpiration and
deposited in plant epidermal cell walls as phytoliths [6,10]. Deposition
of Si in the plant tissue enhances the strength and rigidity of cell walls
and thus increases the resistance of plants to various stresses. The
silicified cells also provide useful paleoecological and archaeological
information known as plant opal or phytoliths [11]. In addition, silicon
in plants has been reported to enhance tolerance to both biotic and
abiotic stresses in several crop plants [12].
The protective effect of silica to plants against insect herbivores
is related to the level of its accumulation and polymerization in plant
tissues with highest levels positively being correlated with increased
resistance [4,13-15]. In addition, the level of Si in plants significantly
influences insect herbivores distribution, with predominance of insect
species being more susceptible to areas where most host plants are
less silicified [16]. However, exact mechanisms of action of silica on
herbivorous insects are still unclear, though most studies point to use
of both physical and/or chemical resistance mechanisms [17,18].
Mechanically, deposition of silica in plant epidermal cells provides
a physical barrier against insect’s probing and feeding or insect’s
penetration into plant tissues. For example, silica mediated stem borer
resistance to Eldana saccharina (Walker) (Lepidoptera: Crambidae)
on sugarcane or Chilo suppressalis Walker (Lepidoptera:Crambidae)
on rice has been partly associated with delayed stalk penetration by
larvae as a result of leaf and stalk silification [19-24]. Silica may also
alter the relative palatability of leaves by increasing leaf abrasion, which
increases wearing of insects’ mandibles and therefore physically deter
larval feeding [25,26].
On the other hand, silica in plants has been shown to modulate the
production and accumulation of herbivore defensive allelochemicals
including phytoalexins, lignin and phenolics in plant tissues [13,27-
30]. Similarly, silica is also reported to elicit the production of plant
defensive enzymes including peroxidase, polyphenoloxidase and
phenylalanine ammonia lyase which are induced in response to plant
damage by herbivorous insects [21,31,32]. These enzymes have been
implicated in a number of plant defenses processes such as lignification
and/or production of antiherbivore plant metabolites [33].
https://www.omicsonline.org/open-access/silica-in-insectplant-interactions-2161-0983-1000e125.pdf
Hope this helps...like I said, sooooo much out there. Now, is it "mj" related? Not specifically, but it certainly is indirectly, since cannabis is not exempt from the norms of the general plant population.
Exactly. Not only does it uptake Si, cannabis is capable of directly binding it to tissue.Ahh so many to choose....let's try this one--
Silicon is absorbed from soil as monosilicic acid [(Si(OH)4] by plant
roots, transported throughout the plant tissue via transpiration and
deposited in plant epidermal cell walls as phytoliths [6,10]. Deposition
of Si in the plant tissue enhances the strength and rigidity of cell walls
and thus increases the resistance of plants to various stresses.
Cannabis is a dynamic/hyper accumulator, putting it in the class of a large number of hyper/dynamic accumulating flowers. This information applies directly, even more so than for cucumbers or other common vegetable plants.Now, is it "mj" related? Not specifically, but it certainly is indirectly, since cannabis is not exempt from the norms of the general plant population.
Ive see a few corn and turf studies and i did google the term you suggested. I didnt see any cannabis studies. i doubt that Si supplementation where Si is already well supplied is beneficial. On depleted soils and soils that are regularly mined by plants Si applcation seems wise.
But what about soil that is fresh, or freshly reammended? In my garden i cant say that ive seen agsil outperform topdressing with equisetum or incorporating rock dust.
CB, is it your practice to routinely use potassium silicate?
Agreed on the above. But that's the same with any nutrient in soil, yes? Like when you first pot into a hot soil, you don't need to supplement any fertilizer.
As far as agsil versus rock dust, I couldn't tell you. I'm in hydroton, so i need something water soluble. I foliar feed potassium silicate, agsil 16h. Super cost effective, and the plants grow sturdier, albeit more brittle.
...That said, I do know that Si applications (both foliar and root applications) will thicken the cell walls of plants (measured by higher concentrations of Si and metal cations found in treated plants) and thicker walls make it harder for a plant to fall prey to disease and vector attacks. This bit of info we all should should know and accept as fact....
You know this how?
To accept your assertion "as fact" an mj relevant citation should be provided.
No actually it's unrelated to the topic. Nothing there characterizes Si uptake in cannabis. Also the question isnt whether Si is beneficial. The question is whether it's useful to apply Si amendments to solid soils. And whether the effects you all are claiming to observe is caused by Si amendments.
"since cannabis is not exempt from the norms of the general plant population." silly BS since the kingdom plantae is fantastically diverse along many dimensions including nutrient uptake. The "norms" GTFOH...
Very imaginative. But i see at least 2problems 1- "fact" doesnt mean what you think.Dude, you need improve your reading comprehension!
I wrote this--
To which you wrote this--
And of the hundreds of Si studies out there, I cut and pasted from one--to which you replied as follows:
Guess you can lead a horse to water--
Do you know when a "cannabis only" research on Si will be published? I don't.
So until I find one, what is wrong in referring/using the next best thing available--Si research on other "dicot" plants from the "general plant population" that have similar growing characteristics?
When I can't get what I want, then I will use "the next best thing". I guess you do will "nothing"--when you don't get EXACTLY what you want (cannabis only research).
Very imaginative. But i see at least 2problems 1- "fact" doesnt mean what you think.
2-the "water" that youre leading a horse to is kool aid.