[Fwd: Re: [CH] Chem Question]
yoda (yoda@clark.net)
Wed, 17 May 2000 21:51:03 -0400
EC expresses the invert ohms (conductivity vs resistance) of the soil
this is a measure of the amount of dissolved salts.
kjeldahl nitrogen
is the measure of the nitrogen still locked in proteins
Byron Bromley wrote:
>
> OK here are some questions for the chemist.
>
> The following is a listing of what is in dairy cow flop in NM. Per NMSU.
>
> Parameter Dairy cow
>
> pH 8.7
>
> EC (mmhos/cm) 15.9
> Total kjeldahl nitrogen (%) 1.74
> Nitrate nitrogen (ppm) 87.4
> Phosphorous (%) .45
> Potassium (%) 1.51
> Calcium (%) 1.81
> Sodium (%) .24
> Magnesium (%) .43
> Iron (ppm) 2197
> Zinc (ppm) 149
> Manganese (ppm) 196
> Copper (ppm) 28
> Boron (ppm) 28
> Aluminum (ppm) 1216
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Question #1
>
> What is kjeldahl Nitrogen ?
>
> Question #2
>
> what is EC (mmhos/cm) ?
>
> Question #3
>
> At what level does Aluminum and sodium cause problems?
>
> Question #4
>
> How does one compare the "Commercial" fertilizers like 5-1-1, 5-10-10 or
> 15-35-15 to this type of numbering sysytem.
>
> Just trying to learn something to new to grow better chiles
>
> Byron
--
Jim W My opinions are just that; not my employer's or my wife's!
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