Calcium Products - How Long Does Gypsum Last
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How Long Does Gypsum Last

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Over at Ag Talk there was good question posed:

I applied one ton of gypsum(procal 40) on some tight wet ground and worked it in.How long will it last.That is a high rate.Do you think it will do any good?

Here are some of the answers posted:

  • Do you have drain tile under it? Supposedly that the only way to make good use of gypsum?
  • Having tile under it is not the only way to get good use out of it.
  • One ton an acre is not a high rate really. But you loose 30lb with every inch of rain. So on average your gypsum moves completely through the soil in almost 2 years. Since you worked it in that time will be a little shorter
  • The Calcium content from Gypsum can provide soil and plant nutrition for many ? 10 Plus years 
  • Hundreds of factors will determine the stability, and or leaching of S
  • Neal Kinsey says in his book that Gypsum will not build Ca levels unless the Ca is already at 60% base saturation.  Edit: Found this poking around the internets:  
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