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.

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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.

Perspectives