Abstract
The valorization of municipal solid waste (MSW) can serve as an organic amendment in agriculture while reducing solid waste accumulation in the environment. This research aimed to evaluate the valorization of a bio-stabilized MSW amendment for the production of faba bean (Vicia faba L.) crop. For this purpose, biomass production and growth, as well as, seed yield and seed components, seed nutrient accumulation, plant pigments, soil properties, and microorganisms were evaluated in comparison with faba bean mineral fertilization in a greenhouse experiment. The results demonstrated that the bio-stabilized MSW amendment achieved similar biomass production, plant growth, seed yield, nitrogen and protein content, and pigment content as the mineral fertilization treatment. On the other hand, the organic fertilization did not exhibit significant effects on the yield components number of pods per plant, and number of seeds per pod, and nutrient accumulation in seeds with respect to mineral and control treatments in both soils. Sandy and clay soil properties were improved in the organic treatments in comparison with the control soils by increasing soil organic carbon, nitrogen, and other soil nutrients, and providing a suitable pH for faba bean growth. Additionally, biological activity was favored by applying this source of organic fertilizer, enriching the nematode community. Reusing bio-stabilized MSW for agronomical purposes can add value to this waste product, serving as an effective alternative to mineral fertilizers in faba bean cultivation.
Highlights
The bio-stabilized municipal solid waste (MSW) amendment showed a positive effect on the biomass production of faba bean plants with respect to the control treatments (Table 2)
Values showed that plant biomass production increased 38% in the sandy soil and 21% in the clay soil with the bio-stabilized MSW amendment compared with mineral fertilization, these results were not significant
This research aimed to evaluate the valorization of a bio-stabilized MSW amendment for the production of the faba bean crop
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Exponential population growth and urbanization have led to fast waste generation and accumulation. 2.01 billion tons of municipal solid waste (MSW) are generated worldwide each year and it is predicted to increase to 3.4 billion tons by 2050 if current conditions remain unchanged [1]. Even when the MSW is collected, most of this waste is disposed of in conventional ways, such as in landfills and incinerators [2], despite their detrimental impacts on the environment [3,4,5] and being regarded as not favorable disposal options for biodegradable waste [6]
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