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  #11  
Old 05-04-2008, 12:16 AM
jbturf jbturf is online now
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Location: groton, MA
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i think superchad is slightly off on the pricing,
i pay .16 per pound of gypsum @jd or lesco whatever
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  #12  
Old 05-04-2008, 01:15 AM
whoopassonthebluegrass's Avatar
whoopassonthebluegrass whoopassonthebluegrass is offline
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Location: Benson, UT
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Quote:
Originally Posted by humble1 View Post
i heard that humates work well...
I have yet to see proof that humate does jack squat beyond the effects of the minimal amount of fertilizer in it.

Studied it in college in my Professional Turfgrass Management class and we couldn't find any quantifiable research that showed humate as anything more than snake oil...
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  #13  
Old 05-04-2008, 12:13 PM
PHS PHS is offline
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Location: Louisiana
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Quote:
Around here we can expect some inprovement on clay. You gotta know your local soils before you can negate the Gypsum option.
I agree. I have very little use for Gyp but that doesn't mean it's useless everywhere else too. I used to work in a nursery and they sold many tons of gypsum and I don't think anyone that worked there knew how gypsum worked or when it was beneficial but it was a conditioned response after awhile for them to apply it every year.


Quote:
I have yet to see proof that humate does jack squat beyond the effects of the minimal amount of fertilizer in it.
Those types of applications seem to me like taking vitamins as a replacement for eating fruits and vegetables. If you want humates, topdress with organic matter and get all of the benefits that come with it. The problem is you can't package up a ton of compost in a little bottle and charge a fortune for it .
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  #14  
Old 05-04-2008, 12:22 PM
topsites topsites is offline
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Location: Richmond Virginia
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Quote:
Originally Posted by carolinaborn82 View Post
What is the name of the product that you can spread out on clay surfaces that helps to break down the clay and allows it to be more pourous so that you can grow grass? Where can you buy it. I have spread it out 400 times at the golf course and can't seem to remember what the name of the stuff is.
Clay Buster, aka gypsum.

Calcium Sulfate Dihydrate is the main ingredient.

Quote:
Originally Posted by G.M.Landscaping View Post
What's the application rate per 1000 sq ft?
Read the instructions on the bag guys.
It will tell you between 10 to 40 pounds, same as lime basically.
But read the instructions, because then there's more bs you know.

Last edited by topsites; 05-04-2008 at 12:28 PM.
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  #15  
Old 05-04-2008, 09:58 PM
superchad superchad is offline
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I was off sorry I paid 8 cents as compared to 12 cents per pound at jdl, sorry had to race this weekend brain wasn't workin right.
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  #16  
Old 05-05-2008, 08:58 AM
TurfBusiness TurfBusiness is offline
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Location: California
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There are alot of different opinions on when gypsum should be used. It provides calcium which in turn improves soil structure (more pore space). When CSU (Colorado) says it is not necessary for homeowners to apply because there is enough calcium in the soil, that may be true. But the major factor is whether the calcium is 'available'. The benefits of soil applied calcium are many, especially in clay soils, high sodium soils and sites that use poor irrigation water. On our sites and properties we always address soil problems first. This usually leads to better water usage by the plant, fertilizers are more efficient (they aren't tied up in the soil), the soil aeration allows for better draninage of salts and the list goes on. We use a liquid calcium product that is 'available' immediately and have had quick success in turning turf around. Our turfs areas are thick with grass and we have very limited weeds- we use no pre-emergents and only spot spray once a year. In my opinion a problem lawn or turfgrass site would benefit with a heavy liquid calcium app and skip a fertilizer app (if cost where an issue). Most of our clients notice an immediate green-up.

Most of the national seminar speakers and consultants that I have listened to or spoke with have said that dry gypsum needs to be applied a minimum of 50#/1000 to 200#/1000 to be effective in overcoming sodium problems and improving pore space. This is another reason why we use a liquid- I can put it down heavy.
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