dolomitic hydrated agricultural lime?

kevn357 · June 10, 2012

I'm not sure if this is safe for my mix. I picked it up thinking it was normal dolomite. Has anyone used this before?

b54red · June 10, 2012

Be very careful with the amount of hydrated lime you use. It will immediately raise the ph in the soil. It is much stronger than regular lime and acts much faster in neutralizing acid. If you have some soil with a really low ph and you want to raise it fast then hydrated lime is the ticket if you use the right amount but if you use too much the soil will become alkaline.

I used hydrated lime (quick lime) one time about 25 years ago after adding some very acidic manure to my beds which already had a very low ph. It quickly raised the ph and worked really well but I have never needed to raise the ph since then.

dice · June 14, 2012

A pretty good document on lime from University of Missouri:
http://extension.missouri.edu/public...b.aspx?P=G9107

JamesL · June 14, 2012

I would not use it in containers. You can use dolomitic or calcitic as they will slow(er) release. Hydrated in containers would probably fry your plants.

Dice,
That link is a good read.

June 10, 2012	#1
kevn357 Tomatovillian™ Join Date: Feb 2006 Location: Parma, OH Posts: 147	dolomitic hydrated agricultural lime? I'm not sure if this is safe for my mix. I picked it up thinking it was normal dolomite. Has anyone used this before?

June 14, 2012	#3
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	A pretty good document on lime from University of Missouri: http://extension.missouri.edu/public...b.aspx?P=G9107 __________________ -- alias

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June 10, 2012	#2
b54red Tomatovillian™ Join Date: Sep 2009 Location: Alabama Posts: 7,068	Be very careful with the amount of hydrated lime you use. It will immediately raise the ph in the soil. It is much stronger than regular lime and acts much faster in neutralizing acid. If you have some soil with a really low ph and you want to raise it fast then hydrated lime is the ticket if you use the right amount but if you use too much the soil will become alkaline. I used hydrated lime (quick lime) one time about 25 years ago after adding some very acidic manure to my beds which already had a very low ph. It quickly raised the ph and worked really well but I have never needed to raise the ph since then.

June 14, 2012	#4
JamesL Tomatovillian™ Join Date: Nov 2011 Location: Long Island NY Posts: 1,992	I would not use it in containers. You can use dolomitic or calcitic as they will slow(er) release. Hydrated in containers would probably fry your plants. Dice, That link is a good read.