10.1007/s40093-018-0194-x

Nutrients release from powder phonolite mediated by bioweatheringactions

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  • Laene de Fátima Tavares*1,
  • André Mundstock Xavier De Carvalho1,
  • Luis Gustavo Brogliato Camargo1,
  • Samarina Gabriele de Fátima Pereira1,
  • Irene Maria Cardoso2,
  1. Federal University of Viçosa, Rio Paranaíba Campus. MG‑230 Highway – Km 7, Rio Paranaíba, Minas Gerais, Brazil
  2. Federal University of Viçosa, Viçosa Campus. Peter Henry Rolfs Av., Viçosa, Minas Gerais, Brazil

Received: 2017-09-26

Accepted: 2018-01-16

Published in Issue 2018-01-31

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

de Fátima Tavares, L., Mundstock Xavier De Carvalho, A., Gustavo Brogliato Camargo, L., Gabriele de Fátima Pereira, S., & Maria Cardoso, I. (2018). Nutrients release from powder phonolite mediated by bioweatheringactions. International Journal of Recycling of Organic Waste in Agriculture, 7(2). https://doi.org/10.1007/s40093-018-0194-x
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Abstract

Purpose Silicate rock powders have been appointed as possible nutrient alternative sources which might enhance the agricultural
sector sustainability. However, the application of those materials directly in soil presents as main limitations the low
content and solubility of the mineral nutrient sources. In this perspective, the aim of the present study was to evaluate, in a
bioweathering perspective, the conjunct application potential of phonolite with organic composts over the nutrients release
in soil, as well as the production and nutrition of brachiaria grass (Urochloa decumbens). In addition, it was sought to assess
the composting process effectiveness in improving the nutrient release from this rock.
Method An experiment was conducted with five treatments (control; enriched compost with powder rock at 10%; mixed
compost with powder rock at 10%; solely powder rock; solely compost) and four repetitions.
Results The alternative sources positively influenced the productivity, as well as the K and Si contents at the aerial part of
the brachiaria grass and the nutrient release in soil. However, the conjunct applications of powder phonolite with organic
composts were the source which the best promoted the total nutrient biorelease to soil.
Conclusion Nevertheless, there was no evidence that the composting process promotes the phonolite bioweathering. On the
other hand, the conjunct application of powder phonolite with organic composts, either as an initial component to the composting
pile or additive to the stabilized composts, is a strategy which enhances the nutrient biorelease of the mineral source.

Keywords

  • Composting,
  • Phonolite,
  • Potassium alternative sources,
  • Rock powders
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