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  3. Possibility Of Brewery Wastes Application To Soil As An Organic Improver Of Biological And Chemical Properties
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  3. Possibility Of Brewery Wastes Application To Soil As An Organic Improver Of Biological And Chemical Properties

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Possibility of brewery wastes application to soil as an organic improver of biological and chemical properties

Jakub Kostecki1, Andrzej Greinert2

  • 1University of Zielona Gora, Institute of Environmental Engineering, Zielona Góra, Zielona Góra, Poland. j.kostecki@iis.uz.zgora.pl.

Scientific Reports
|July 26, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Brewer's spent yeast (BSY) application significantly improved soil quality, especially in clay soils, by enhancing nutrient content, microbial activity, and enzyme function. This sustainable organic fertilizer shows promise for boosting agricultural practices.

Keywords:
Brewer's spent yeast (BSY)Brewery wastesCircular economyR10 processSoil fertilisation

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Area of Science:

  • Agricultural Science
  • Soil Science
  • Environmental Science

Background:

  • Soil degradation, characterized by declining organic matter, poses a significant threat to global food security.
  • Sustainable agricultural practices are crucial for mitigating soil degradation and ensuring long-term food production.
  • Brewer's spent yeast (BSY) is a potential byproduct for use as an organic soil amendment.

Purpose of the Study:

  • To evaluate the effectiveness of brewer's spent yeast (BSY) in improving soil quality in both clay and sand soils.
  • To determine the impact of different BSY application rates on soil chemical, microbial, and enzymatic properties.
  • To assess the potential of BSY as a sustainable organic fertilizer, particularly for clay soils.

Main Methods:

  • A randomized complete block design with three replicates was used.
  • Soil samples (clay and sand) were treated with BSY at rates of 2 t/ha and 5 t/ha and incubated for 5 months at 26°C.
  • Analyses included soil pH, total nitrogen, organic carbon, total phosphorus, electrical conductivity (EC), microbial populations (bacteria, actinobacteria, fungi), and enzyme activities (dehydrogenase, catalase, protease).

    • Main Results:

    • BSY application notably improved soil quality in clay soils, increasing pH, EC, nitrogen, and carbon content.
    • BSY significantly enhanced microbial populations (bacteria, fungi) in clay soils, with a less pronounced effect in sand.
    • Enzyme activity and a soil fertility index were improved in BSY-treated clay, while sand showed increased activity of a different enzyme.

    Conclusions:

    • Brewer's spent yeast (BSY) demonstrates significant potential as an organic fertilizer, particularly beneficial for improving the quality of clay soils.
    • The findings support the use of BSY as a sustainable, locally sourced solution for enhancing soil health and agricultural productivity.
    • Further research is recommended to optimize BSY application rates, assess long-term impacts, and evaluate economic viability and social acceptance.