Measurement of electrical conductivity of fertilizer NPK 20-8-8
2016
Krupicka, J., Czech Univ. of Life Sciences, Prague (Czech Republic) | Sarec, P., Czech Univ. of Life Sciences, Prague (Czech Republic) | Novak, P., Czech Univ. of Life Sciences, Prague (Czech Republic)
The paper deals with the measurement of electrical conductivity of significant size groups of the mineral fertilizer NPK 20-8-8 divided in the air stream. Samples of these groups were dissolved in distilled water and the values of electrical conductivity recorded. Measurements will be used to monitor the electrical conductivity of other mineral fertilizers and to create a standard for qualitative assessment of fertilizer solutions. On the basis of the electrical conductivity, the concentration of dissolved mineral fertilizers can be determined. The results indicate that the values for the significant portions sorted by air flow are analogous in opposite to the portions sorted by sieves. In the latter case, bigger particles reached higher values of electrical conductivity, suggesting thus higher content of soluble nutrients. Measurements are taken as the guidance for the methodology verification that will be used to measure other samples of similar fertilizers. These results will be used for precise application of fertilizers and can be used as a reference for qualitative assessment of fertilizer solutions.
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