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Highlighting agricultural developments, problems, research, & issues for central coast CA
Tractor in Sunset
Comments:
by Mike Aucott
on May 30, 2015 at 12:47 PM
This is interesting; thanks for doing this. But a couple of questions:  
 
1) How do you prepare the soil extrantant solution? Is this simply water that's been in contact with soil long enough, for example from a sample of soil shaken up with a sample of water and allowed to settle? How much soil to how much water?  
 
2) You state that soil nitrate-N concentrations from 5 to 30 ppm corresponde to 10 to 60 ppm NO3. This is confusing; the factor of 2 relationship is not consistent with the 4.43 to 1 ratio of the mass of NO3 itself to that of N only.  
 
If you can clarify these things, it would be much appreciated.  
 
Mike
by Bioassay
on September 5, 2016 at 2:52 AM
Wow…!! It’s very interesting… I am really impressed with your post.. Thanks for sharing it..  
Formate Assay Kit
 
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