How often do you use silica personality

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Roger A. Shrubber

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I use potassium silicate in a foliar on my outdoor grows. It has been shown to have effectiveness against PM and mold when used as a foliar.

"The nutrient solution amendment of 1.7 m M Si and foliar applications of Si of ≥ 17.0 m M decreased the number of powdery mildew colonies on all three cucurbit species compared with the controls."

Si is good for cucurbits, they hate sulphur, which would be my choice for mildew, but Si does the job.
 

BongerChonger

Well-Known Member
If anyone's still interested and using Potassium Silicate as pH up until harvest. I may have found some relevant information.
Says enough for me, that I'm going to stop using it a few weeks before harvest from now on.
If only to be on the safe side.
As said in previous comments. If anyone has any data to share, like sample reports for contaminants etc. in finished, smoke-able product. That does, or doesn't support Silicas use in such a way, I'd greatly appreciate it. As I'd like to still use it up until harvest, if it's safe enough to do so.

My own 2cents is it should be safe and mostly harmless on edible crops. But can have the potential to be dangerous, if ingested in large amounts.
The question still is regarding smokable products. It seems mostly unexplored.

I'll quote some of what I think's important and leave the link here too.

"4. The effects of the substance on human health.

Applications of potassium silicate pose a risk primarily from inhalation or ingestion of silica-rich compounds. Respiratory problems in the agricultural sector due to inhaled dust are a proven concern (Schenker 2000). Decades ago, it was shown that dust arising from storage and handling of wheat grains contained particles that were believed to cause respiratory NOSB TAP Review Compiled by UC SAREP Potassium silicate - production September 4, 2003 Page 5 of 14 ailments (Baker 1961).

Burning of high-silica crops, such as rice and sugarcane, have been problematic for worker health in the past (Boeniger et al. 1988). There is also significant indirect evidence linking ingested plant silica and human cancer (Sangster et al. 1983, Bhatt et al. 1984, Hodson et al. 1994), but there currently is no connection between plant silica and inorganic silica sources. Mitigation of health risks associated with respiration of silica-laden dust can be achieved though proper use of personal protective equipment including a NIOSH-approved dust respirator where dust occurs. No carcinogenicity, mutagenicity, or developmental toxicity data are available for potassium silicate. "


Cheers.
 
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