[neverforget4/20]

Who here has confirmed that your plant absorbed Si as a result of your application? Before and after sap analysis? ANY ANALYSIS?

[clown baby]

Originally Posted by neverforget4/20

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.

[neverforget4/20]

Originally Posted by clown baby

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.

I think ive observed that the branches feel denser, heavier, more solid. But im not sure. There are so many variables in my grow. I cant tell.

Ive tried , agsil 16, protekt, osa28, crossover, DE, equisetum. I've grown great plants with sturdy stems using each of them. Im not convined that the added Si matters that much if your soil is right.

Ive seen the graph that shows agsil provides the most plant available Si. Like the earlier poster mentioned Agsil isnt useful if you cant take potassium.

Quantrill is knowledgeable about silicon::mj maybe he will visit with some comparative data.

[power puff]

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.

[neverforget4/20]

Originally Posted by power puff

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.

Agsil, a potassium silcate product, is widely used as a source of plant available silica. I dont know the biochemistry but i know that its efficacy is well established in turf and other crops.

[DocTim420]

Admittedly, analysis of cannabis plant tissues reveal very little concentrations of Si (compared to a Si hog like rice). But then one has to wonder--why does our earth crust have an incredible high concentration of Si (in all forms)?

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.

Whether it makes a bud harsher or not, hard to say--but I think the harshness is probably due to "metal accumulation" from excess Potassium Silicate treatments; afterall potassium is part of the alkali metal club.

Originally Posted by Douglas.Curtis

I doubt you're growing the quality I am, No offense. The contamination you have is covering up the effects of the silica.

Were cannabis "not" a dynamic/hyper accumulator, this statement would be correct.

This tells me you've never had super clean cannabis before. Again, no offense. I didn't either, the first 5 years I grew. Was quite a shock when my "better n' anything I came across" turned out to be barely 'decent,' when compared to truly clean cannabis.

I stand by my statements, they were formed from clear research. [/quote]

That's funny...I can grow outdoors in a completely natural environment without adding anything but water and comparing finish product with what I accomplish indoors adding everything the plant needs and have completely dried flower testing for all mineral and chemical compounds to be very consistent and no spikes in anything except plant size and finished weight. Have a nice day.

[neverforget4/20]

Originally Posted by DocTim420

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.

[DocTim420]

Hemp/cannabis is very good at remediating contaminated soil--even at Chernobyl's nuclear accident in 1986, and more recently at Fukushima.

The Tokyo Electric Power Company (TEPCO) has been desperately seeking ways to clean up toxic radiation spewing from the Fukushima Daiichi site. Now, a natural plant may be able to save the nuclear power plant: cannabis.

Using plants to clean up toxic soil is known as phytoremediation. Two members of the mustard seed family are usually used in phytoremediation. However, cannabis has been proven to be just as effective, if not more so, at absorbing toxic metals from soil as other phytoremediation plants.(1)

The fact that marijuana can absorb environmental pollutants isn’t exactly news. Hemp’s resilience to contaminated soil is well studied. In 1995, the Polish Institute of Natural Fibres released a study which demonstrated that hemp was able to withstand high levels of heavy metals without inhibiting its growth.(2)
https://www.fukushimawatch.com/2015-1...refecture.html

So think about that as we add various metals to our precious herb.

[DocTim420]

Originally Posted by neverforget4/20

You know this how?
To accept your assertion "as fact" an mj relevant citation should be provided.

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-acc...3-1000e125.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.