Wollastonite as a soil amendment?

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budtoker221

Well-Known Member
Wollastonite (calcium silicate) as a soil amendment to boost resistance to PM
Has anyone ever used this amendment?
I know theres many common soil components that contain silica like sand and vermiculite but this seems a bit different. I’m thinking of adding this to a coco/perlite medium but I’m not sure if it would just wash a way or actually do anything.

journals.ashs.org

Applying Wollastonite to Soil to Adjust pH and Suppress Powdery Mildew on Pumpkin

Although not considered an essential nutrient, silicon (Si) can be beneficial to plants. Si accumulator species such as pumpkin (Cucurbita pepo var. pepo) can absorb Si from soil. Si uptake may reduce plant susceptibility to fungal diseases such as cucurbit powdery mildew (Podosphaera xanthii...
journals.ashs.org journals.ashs.org
 
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crimsonecho

crimsonecho

Well-Known Member
it says it raises ph (as much as or even more so than lime) and decreases available mg, is that something you want?
 
B

budtoker221

Well-Known Member
Yeah good call im actually trying to get away from amendments as much as possible I was gonna switch from potassium silicate (protekt) to amending with this but maybe I’ll just use less protekt and not use any during late flower I’m just trying to use less products overall and I feel like the potassium silica affects the flavor a bit if it’s used in flower.
 
effexxess

effexxess

Well-Known Member
Bugbee at Utah State University is using wollastonite in their greenhouse mix.

It's suppose to release Si throughout the grow cycle.

It does indeed pop pH by as much as a point. They recommend 1g/L Wollastonite, about a tablespoon per gallon i think,
which isn't much, so might not affect the soil pH overall.

Dr. Bugbee lectured that he believes silicon is key to trichome development!

Attached "Bioavailable silicon: release rate from additives & substrates" from USU.
 

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Mike Parent

Active Member
effexxess said:
Bugbee at Utah State University is using wollastonite in their greenhouse mix.

It's suppose to release Si throughout the grow cycle.

It does indeed pop pH by as much as a point. They recommend 1g/L Wollastonite, about a tablespoon per gallon i think,
which isn't much, so might not affect the soil pH overall.

Dr. Bugbee lectured that he believes silicon is key to trichome development!

Attached "Bioavailable silicon: release rate from additives & substrates" from USU.
Click to expand...
According to the link Wollastonite doesn’t raise the ph in peet out CoCo.
“- It is unknown why the pH of peat and coconut coir-based media with wollastonite did not increase over time.”
 
R

RCJR

Active Member
effexxess said:
Bugbee at Utah State University is using wollastonite in their greenhouse mix.

It's suppose to release Si throughout the grow cycle.

It does indeed pop pH by as much as a point. They recommend 1g/L Wollastonite, about a tablespoon per gallon i think,
which isn't much, so might not affect the soil pH overall.

Dr. Bugbee lectured that he believes silicon is key to trichome development!

Attached "Bioavailable silicon: release rate from additives & substrates" from USU.
Click to expand...
Is this supposed to be added to the soil 1 time or multiple times throughout the life cycle?
 
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