Marc Suderman

  • Marc Suderman Consulting

  • United States, WA, Yakima

Full Post

Marc Suderman Yakima, WA
3 years, 10 months ago
from #SoilMatters
“When people talk about gypsum, they really should be talking about calcium,” says David Holden, president, Holden Research and Consulting of Camarillo, Calif. “For years we've always talked about gypsum as being synonymous with calcium, but people don't realize that the real issue is not gypsum, the issue is soluble calcium.”