Document Type
Article
Publication Date
3-1-2013
Abstract
A 5-day method for determining the soluble silicon (Si) concentrations in nonliquid fertilizer products was developed using a sodium carbonate (Na 2CO3)-ammonium nitrate (NH4NO3) extractant followed by visible spectroscopy with heteropoly blue analysis at 660 nm. The 5-Day Na2CO3-NH4NO3 Soluble Si Extraction Method can be applied to quantify the plant-available Si in solid fertilizer products at levels ranging from 0.2 to 8.4% Si with an LOD of 0.06%, and LOQ of 0.20%. This Si extraction method for fertilizers correlates well with plant uptake of Si (r2 = 0.96 for a range of solid fertilizers) and is applicable to solid Si fertilizer products including blended products and beneficial substances. Fertilizer materials can be processed as received using commercially available laboratory chemicals and materials at ambient laboratory temperatures. The singlelaboratory validation of the 5-Day Na2CO 3-NH4NO3 Soluble Si Extraction Method has been approved by The Association of American Plant Food Control Officials for testing nonliquid Si fertilizer products. © 2013 Publishing Technology.
Publication Source (Journal or Book title)
Journal of AOAC International
First Page
251
Last Page
259
Recommended Citation
Sebastian, D., Rodrigues, H., Kinsey, C., Korndörfer, G., Pereira, H., Buck, G., Datnoff, L., Miranda, S., & Provance-Bowley, M. (2013). A 5-day method for determination of soluble silicon concentrations in nonliquid fertilizer materials using a sodium carbonate-ammonium nitrate extractant followed by visible spectroscopy with heteropoly blue analysis: Single-laboratory validation. Journal of AOAC International, 96 (2), 251-259. https://doi.org/10.5740/jaoacint.12-243