What is Gypsum for?

[Guest]

anyone?

 

[bartender187]

http://www.gypsum.co.nz/pages/product/nutrition.php

Gypsum is a fertiliser
As a fertiliser, gypsum is a good source of sulphur and, being more soluble than lime, it is also a good source of medium-term release calcium. It has the added advantage that it neutralises the by-products of organic decomposition. Some New Zealand soils, particularly large parts of Otago, Canterbury and Gisborne, are low in sulphur and traditionally superphosphate has been applied to amend this. The sulphur in gypsum is in a form that is readily available to plants. Superphosphate applications raise the concentration of phosphorous in the soil whereas gypsum allows the application of sulphur without input of phosphorous. Gypsum also alleviates problems of high aluminium and manganese in some clay subsoils.

 

[duce]

dido bartender187

 

[Closet Funk]

Use it! it works good.

 

[CarharttKidd]

Gypsum helps break up clay in soil and is a good soil sweetener. A good cheap if not free source of gypsum is drywall. 10lbs to 100sqft. is the typical application rate I'm pretty sure. Some people say that technically this is not organic, but I'm not quite sure why.

 

[Guest]

Use it! it works good.

For what? Can it be used to change my pH? Or to raise my pH in my fertilizer solution? I'm looking for something to raise pH, especially in my fert solution.

 

[CarharttKidd]

Jeebus. Get some freakin pH up if you wanna raise the pH of your liquid fertilizer sollution. Earth Juice makes an Organic. Are you blind? There are 2 posts explaining uses. To the best of my knowledge gypsum is not very water solluble.

 

[Guest]

i dont wanna buy anything off the net, thank you very much...

 

[Guest]

Get some dolomite lime and add it to your mix at 1 tbs oer gallon. You should add it before planting, but it can be used in water also, or sprinkle it on top and water in. It will buffer your ph in a good mix. Try to avoid hydrated lime if possible. But if thats all you can find then use about 1/4 tsp per gallon and check your results the next day. It is much stronger than dolomite.

Cheers,

 

[Guest]

yeah i used 1/2 tsp of hydrated lime in a gallon of fert solution and it went up to 8pH or something, so I had to use 4 drops of a lemon to bring it back down to 6.5 or so.

 

[Opt1983]

I'd add your dolomite lime at 2 TBLs per gallon of mix. Get the fine stuff (pulverised). -Opt

 

[Guest]

ok so apparently gypsum is used for adding sulfur and calcium to soil

some questions:

1) does gypsum mess around with pH
2) what is a "soil sweetener?"
3) is gypsum water soluble? is it in rock form? how long does it take for the sulfur and calcium to be made available once gypsum is put in soil?

thanks in advance!~

 

[Closet Funk]

It's just a good admendment to add to your soil. It helps stabalize PH and has other important properties such as loosening up soils. It's basically a soil conditioner.

 

[bostrom155]

So how much are you guys adding to your soil?

 

[Guest]

Hi guys/gals,
Gypsum is a very important to all plants for ph and trace elements. I use it alot on my vegetable garden. Vegetables grown in heavy cal. soil have a longer shelf-life. I'm not sure if it has a preserving quaility on cannibus, but it might be something to do a test grow with. If you use prilled gypsum (25# for 6$) it is more availible to the plants sooner. I consider cal. as a primary....N-P-K-Ca. Pumpkins require it at a rate of 25# per 1000sq. ft.(off topic)
Drywall has been treated with fire retardant. I wouldn't put that crap in your garden.

Hope this helps,
Seed