2020
DOI: 10.21577/0103-5053.20190229
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Potential Slow Release Fertilizers Based on K2MgSiO4 Obtained from Serpentinite

Abstract: In this work, a potassium magnesium silicate mineral based on phase K 2 MgSiO 4 was prepared from serpentinite rock and studied as a potential K and Mg slow-release fertilizer. The material was prepared by impregnation of serpentinite/KOH and calcination at 700 °C to produce K 2 MgSiO 4 phase, olivine and forsterite. The release patterns of K and Mg in the stirred-flow trial and leaching through the soil columns showed that K 2 MgSiO 4-based materials released K on lower rates than KCl and MgSO 4 .7H 2 O, howe… Show more

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Cited by 2 publications
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“…Changes in K release rate are verified when comparing enhanced efficiency K fertilizer sources and conventional sources (Ballotin et al, 2020). It is essential to highlight that, regardless of the treatments tested, LKC was within the range from 17 to 35 g kg -1 , which are values established as adequate for leaf analysis of K in maize (Cantarella et al, 1997).…”
Section: Resultsmentioning
confidence: 96%
“…Changes in K release rate are verified when comparing enhanced efficiency K fertilizer sources and conventional sources (Ballotin et al, 2020). It is essential to highlight that, regardless of the treatments tested, LKC was within the range from 17 to 35 g kg -1 , which are values established as adequate for leaf analysis of K in maize (Cantarella et al, 1997).…”
Section: Resultsmentioning
confidence: 96%