Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Ph 11.3 Enhances The Solubility Of Potassium Silicate For Liquid Fertilizer, Brendan Fatzinger, Bruce Bugbee
Ph 11.3 Enhances The Solubility Of Potassium Silicate For Liquid Fertilizer, Brendan Fatzinger, Bruce Bugbee
Nutrients
Consistent delivery of up to 1 mM silicon (Si) to the root-zone is beneficial for plant health, but the maximum solubility of silicon is only 1.7 mM between pH 4 and 8. This makes Si difficult to concentrate and add through a proportioner in liquid fertilizer systems. The solubility of Si begins to increase with increasing pH above 9. We added potassium silicate (K2SiO3) and fumed silica (SiO2) to RO water that was pH adjusted to pH 5, 8, 9, 10, or 11 with either KOH or NaOH. Samples were filtered and dried to …
Residue From Sequestrene 138 Fe Eddha Clogs Filters: Alternatives For Chelated Iron In Liquid Fertilizer Systems, Brendan Fatzinger, Bruce Bugbee
Residue From Sequestrene 138 Fe Eddha Clogs Filters: Alternatives For Chelated Iron In Liquid Fertilizer Systems, Brendan Fatzinger, Bruce Bugbee
Nutrients
Ferric iron rapidly precipitates as FeOH and becomes biologically unavailable, so chelated iron is commonly used in liquid fertilization systems to keep it in solution. The most common chelating agents in agriculture are:
- EDDHA (ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid)
- DTPA (diethylenetriaminepentaacetic acid)
- EDTA (ethylenediaminetetraacetic acid)
- and for monocots in deep-flow hydroponics, HEDTA (also called HEEDTA)