re: calcium levels--is 3500 ppm too high or just right?


My calcium levels are at 2600 ppm right now (Mg at 300 ppm and 
Ca saturation at 72%) and I'm thinking that I should raise Ca a bit, 
maybe to 3500 ppm.  Does anyone know what levels other really 
big pumpkins have been grown in?  And the followup question, of 
course, is "How much gypsum do I add to a 1000 sq. ft. patch to 
raise levels from 2600 ppm to 3500?  I already added 40# of 
magnesium sulfate and am hoping that will raise my Mg up around 
400+ (but I haven't done the math) and that would give me a good 
ratio of Ca:Mg, I figure.

Any advice would be appreciated!

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