Lime and Gypsum
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- Posts: 22
- Joined: October 21st, 2017, 8:35 am
- Location: Central MD (Annapolis)
- Grass Type: Tall Fescue
- Lawn Size: 5000-10000
- Level: Some Experience
Lime and Gypsum
Hello,
Last year I took a soil test from my local extension and ended up over the course of the year with a couple interesting observations (I will be doing a Logan labs test next spring, and look forward Andy’s complete analysis).
1). The sampling I took didn’t accurately represent my full back yard and didn’t represent my front yard at all. Ph levels for the majority the yard were < 6. I should have been working on adjust the pH for the last year unfortunatly
2). My magnesium levels are off the charts. I live outside Annapolis (Chesapeake Bay Area), and having high magnesium levels I guess isn’t a surprise. Calcium levels are a little below optimal. My observation is that The soil is compact. Water pools when there is hard rain (if that matters).
I applied lime (encap) 2 weeks ago to address the Ph issue. Could I also apply gypsum this fall (2-4 weeks after the lime)? I’ve seen some recommendations that this is ok, while others say wait for 90 days.
Last year I took a soil test from my local extension and ended up over the course of the year with a couple interesting observations (I will be doing a Logan labs test next spring, and look forward Andy’s complete analysis).
1). The sampling I took didn’t accurately represent my full back yard and didn’t represent my front yard at all. Ph levels for the majority the yard were < 6. I should have been working on adjust the pH for the last year unfortunatly
2). My magnesium levels are off the charts. I live outside Annapolis (Chesapeake Bay Area), and having high magnesium levels I guess isn’t a surprise. Calcium levels are a little below optimal. My observation is that The soil is compact. Water pools when there is hard rain (if that matters).
I applied lime (encap) 2 weeks ago to address the Ph issue. Could I also apply gypsum this fall (2-4 weeks after the lime)? I’ve seen some recommendations that this is ok, while others say wait for 90 days.
- andy10917
- Posts: 29739
- Joined: February 23rd, 2009, 10:48 pm
- Location: NY (Lower Hudson Valley)
- Grass Type: Emblem KBG (Front); Blueberry KBG Monostand (Back)
- Lawn Size: 1 acre-2 acre
- Level: Advanced
Re: Lime and Gypsum
Both Lime and Gypsum supply Calcium, but their effect upon pH is very different. I can't tell you which one is better for you without a proper test of all of your nutrients and the TEC and OM. It is rare that you'd use both.
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- Posts: 22
- Joined: October 21st, 2017, 8:35 am
- Location: Central MD (Annapolis)
- Grass Type: Tall Fescue
- Lawn Size: 5000-10000
- Level: Some Experience
Re: Lime and Gypsum
Cec levels were 8.8 meq/gm and OM was 2%. OM probably increases slightly over the last year (previous owner don’t mulch meaves, use organic fertilizers, etc)
- Dchall_San_Antonio
- Posts: 3340
- Joined: December 17th, 2008, 1:53 am
- Location: San Antonio, Texas
- Grass Type: St Augustine
- Lawn Size: 5000-10000
- Level: Advanced
Re: Lime and Gypsum
Your type of soil is usually mistakenly referred to as clay. Once you get the Logan Labs test and Andy takes a look, he'll have more to say.
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