[CH] Chem Question

Byron Bromley (Byron.Bromley@gsd-co.com)
Wed, 17 May 2000 21:13:49 -0400

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