Biopotential of compost and compost products derived from horticultural waste—Effect on plant growth and plant pathogens' suppression

Milinković, Mira; Lalević, Blažo; Jovičić-Petrović, Jelena; Golubović-Ćurguz, Vesna; Kljujev, Igor; Raičević, Vera

doi:10.1016/j.psep.2018.09.024

Cited by 70 publications

(35 citation statements)

References 41 publications

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“…No toxicity effects were detected, and quite the opposite, all products and even well water increased root and hypocotyl elongation. The high EC, may cause negative effect on plants, which should be reduced by the progressive dilutions [52], but even non-diluted B did not affect L. sativa seeds germination and plant elongation, however presented the lowest values. Contrary to our ndings, Carballo et al [53] indicated that aerated teas conditions may result in lower toxicity than non-aerated, and dependents of application dilution.…”

Section: Discussionmentioning

confidence: 95%

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Funes-Pinter

Pisi

Aroca

et al. 2020

Preprint

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In the present study, the quality of aerated and non-aerated compost teas and bioslurry as bio-fertilizers and its application on two plant species in different substrates were tested. Compost tea brewed from a mixture residues compost presented higher nutrient content than that brewed from grape marc composted. Aeration, with shorter extraction time, resulted in higher pH, but in general with lower nutrient concentration, while bioslurry, presented higher nitrogen content. No pathogen and toxic effects were detected in the bio-products. Finally, Bio-products were evaluated in ornamental plant species: Petunia hibrida and Impatiens walleriana , where compost teas and bioslurry presented highly variable properties and effects on plant growth, depending on the substrate and species used. While in sand no significant effect on plant biomass and pigments were observed, in compost and commercial substrate bioslurry presented values similar to the traditional fertilizer. Compost tea presented variable results with no differences between aerated and non-aerated, both increasing carotenoids in I. walleriana in sand. We conclude that aeration showed no differences in compost tea quality, whilst bioslurry demonstrated to increase plant biomass at similar values to traditional fertilizer. Our results demonstrated that alternative products are an efficient, safe, ecological, and economical alternative to traditional products.

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Section: Discussionmentioning

confidence: 95%

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Funes-Pinter

Pisi

Aroca

et al. 2020

Preprint

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“…Their authors believed that micronutrients bound by sulfates are more easily available, cheaper and less harmful to plants than in the form of other salts. Milinković et al ( 2019 ) reported that both water extracts and compost tea were a source of soluble S, except that soluble S content in compost tea was almost tenfold higher compared to water extracts of green waste composts (leaves and grass). Koné et al ( 2010 ) provided sulfate values in compost tea from chicken manure, sheep manure, bovine manure, and shrimp powder that ranged from 2 to 31 mg/L.…”

Section: Resultsmentioning

confidence: 99%

Changes in mineral forms of nitrogen and sulfur and enzymatic activities during composting of lignocellulosic waste and chicken feathers

Bohacz

2019

Environ Sci Pollut Res

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The aim of this study was to show the dynamics of changes in the activity of enzymes responsible for C, N, and S metabolism, i.e., cellulase, protease, urease, and arylsulfatase in two lignocellulosic composts as well as changes in the concentration of mineral forms important in plant nutrition (N-NH 4 + , N-NO 3 − , S-SO 4 2− ). Most of the enzyme activity was higher during 10 weeks of composting in compost I, containing higher amounts of easily available organic matter than in compost II. Enzymatic activities in compost II remained at a higher level for a longer time, but they increased at a slower rate. Mineral content changes in the compost mass consisted primarily of an increase in N-NO 3 − concentration and a decrease in N-NH 4 + and S-SO 4 2− levels, especially in compost I. The concentration of mineral nitrogen and sulfur forms in compost water extracts was about 10–100 times lower than in the compost mass. At the end of composting, the amount of sulfates in the compost mass was 30 and 150 mg kg −1 dw in compost II and I, respectively. In this context, the composts obtained should be considered valuable for fertilizing soils poor in this component and for cultivating plants with high sulfate S demand.

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“…During the composting process, there is a change in temperature due to the biological activity of microorganisms classi ed as mesophilic (15-45 °C), thermophilic (45-80 °C) and hyperthermophilic (> 80 °C) [24]. During the thermophilic and hyperthermophilic phase, normally actinobacteria and grampositive bacteria are observed [25], occurring the suppression of several pathogens [26]. After this phase, occur the stabilization of compost temperature and the mineralization of organic compounds [27].…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and microbiological dynamics in composting of organic waste using a new bioreactor model

Gaspar

Assis

Carvalho

et al. 2020

Preprint

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Background It is important to use renewable resources to minimize the environmental risks and the composting is one of the most sustainable methods for the management of organic waste. Methods The objective of this work was to evaluate the physicochemical dynamics of microorganisms and to study cultivable microorganisms during the composting process of organic residues in a new model of bioreactor. The formulation of a possible cocktail of microorganisms selected for use as a compound accelerator will be further investigated. In addition, the use of two inoculants (non-commercial inoculum (NCI)) and commercial inoculum (CI)) and a control without inoculant during the composting process will be analyzed to evaluate its efficiency. Composting was performed by mixing organic waste from the garden waste and University Restaurant, obtaining an ideal C/N ratio of 30:1. The composting process was carried out in 1 m3 composters with controlled temperature and aeration. Results The thermophilic phase for all treatments was reached by the second day. Mature compost was obtained after an average of 120 days and composting in all treatments showed an increase in the availability of P and micronutrients. During composting, the population of bacteria and actinobacteria were higher than those of yeasts and filamentous fungi. Conclusions Increased composting efficiency was observed when starter cultures were used, the treatments presented advantages such as greater mineralization of P-available and micronutrients as Mn and Zn, in terms of the quality of the final product in comparison to the control treatment.

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Biopotential of compost and compost products derived from horticultural waste—Effect on plant growth and plant pathogens' suppression

Cited by 70 publications

References 41 publications

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Changes in mineral forms of nitrogen and sulfur and enzymatic activities during composting of lignocellulosic waste and chicken feathers

Physicochemical and microbiological dynamics in composting of organic waste using a new bioreactor model

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