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Regenerative Agriculture and Direct Drilling
Regen Ag Crops & Agronomy
Albrecht versus conventional soil testing - my experiments
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<blockquote data-quote="EmeraldCropSci" data-source="post: 167621" data-attributes="member: 1692"><p>The lab extraction method is usually straightforward. For tissue samples the material is dry ashed and then digested in a strong acid to completely dissolve all remaining minerals. The resulting solution is diluted and then passed through analysis machines, such as gas plasma, to determine total elemental content. Generally, there is no determination of the original different constituents within the plant, it is just the overall totals - as is the result in the table you've shown.</p><p></p><p>% and mg/kg (ppm) are only used to give a convenient number i.e. Potassium at 4.31% could also be expressed as 43,100 ppm (or mg/kg). Obviously 4.31% is easier to read.</p></blockquote><p></p>
[QUOTE="EmeraldCropSci, post: 167621, member: 1692"] The lab extraction method is usually straightforward. For tissue samples the material is dry ashed and then digested in a strong acid to completely dissolve all remaining minerals. The resulting solution is diluted and then passed through analysis machines, such as gas plasma, to determine total elemental content. Generally, there is no determination of the original different constituents within the plant, it is just the overall totals - as is the result in the table you've shown. % and mg/kg (ppm) are only used to give a convenient number i.e. Potassium at 4.31% could also be expressed as 43,100 ppm (or mg/kg). Obviously 4.31% is easier to read. [/QUOTE]
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Regenerative Agriculture and Direct Drilling
Regen Ag Crops & Agronomy
Albrecht versus conventional soil testing - my experiments
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