Acute toxicity of experimental fertilizers made of blood meal, spent coffee ground and biomass ash

Tomasz Ciesielczuk, Czesława Rosik-Dulewska, Joanna Poluszyńska, Irena Sławińska
  • Journal of Water and Land Development, January 2017, De Gruyter
  • DOI: 10.1515/jwld-2017-0042

Spent coffee ground acute toxicity

What is it about?

The study presents the results of research on the acute toxicity of a fertilizer formulas made of spent coffee ground (SCG) with addition of ash from low-temperature combustion of biomass or ash with an admixture of magnesium sulfate and blood meal. The presented test data showed a diversified acute toxicity level of the fertilizers for the tested plant species. Especially, addition of rape oil as an agent controlling the elution of ions from the fertilizer to the soil solution should be eliminated as it probably causes strong inhibition of roots growth.

Why is it important?

A big advantage of the tablet fertilizers made of SCG and biomass-derived ash if the fact that they can be produced in-house even by unskilled persons. Moreover the reaction of the produced fertilizer can be controlled individually according to the needs of plant species for which it is to be applied.


Dr Tomasz Ciesielczuk
Opole University

Best obtained fertilizers (made of spent coffee grounds and biomas ash) were tested in garden practice, what is a substantial part of "Slow life & garden" philosophy.

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The following have contributed to this page: Dr Tomasz Ciesielczuk

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