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9 results for “vermicompost”
Dataset of the manuscript "Assessing the influence of Eisenia andrei on the decomposition of Casuarina equisetifolia litter in vermicompost."
<p>Data generated during an experiment of decomposition of <em>Casuarina equisetifolia</em> litter by the application of vermicompost (VC) or the combination vermicompost + the earthworm <em>Eisenia andrei</em> (E).</p> <p>Six files are included:</p> <p>"<strong>readme.csv</strong>" is a file where we explain the meaning of each column (and in which units is expressed) in each of the other five files.</p> <p>"<strong>earthworm_N_biomass.csv</strong>" is a table with the number of <em>Eisenia andrei</em> individuals and the total earthworm fresh weight in each of the experimental units we sampled</p> <p><strong>"FTIR_spectra.csv" </strong>is a file with the raw spectral data we obtained from the litter by Fourier Transform Infrared spectroscopy combined with Attenuated Total Reflectance (FTIR-ATR). First column indicate the wavenumber (cm-1) and the other columns indicate the absorbance values of each litter sample for each wavenumber.</p> <p><strong>"litter_chemical_composition.csv"</strong> is a file with the raw data of the concentrations of different chemical elements measured in <em>C. equisetifolia</em> litter collected at different decomposition times.</p> <p><strong>"litter_mass_loss.csv"</strong> contains the dry weight data of the litter at time 0 and after each collection time, as well as the percentage of litter mass loss with time. .</p> <p>"<strong>mesofaunal_com.</strong><strong>csv</strong>" are the numbers of individuals of several groups of mesofaunal organisms (collembolans, mites, and others) we recovered in each of our experimental units.</p>
Dataset of the paper "Vermicomposting as a sustainable option for the management of the biomass of the invasive tree Acacia dealbata Link."
<p>Data generated during an experiment of vermicomposting of <em>Acacia dealbata</em> fresh biomass. Four files are included: "<strong>vermicompost_and_earthworm_data.csv</strong>" and "<strong>readme.csv</strong>" are the raw data of different parameters measured in vermicompost samples during the vermicomposting of <em>Acacia dealbata</em> by the earthworm <em>Eisenia andrei</em> and an explanation of each parameter and the unit in which the parameter is expressed. </p> <p>"<strong>germination test.csv</strong>" and "<strong>radicle_length.csv</strong>" are the results of an ecotoxicological test on the effect of <em>A. dealbata</em> biomass and vermicompost on the germination and radicle elongation in <em>Lepidium sativum</em>.</p>
Dataset for the manuscript entitled "Can vermicomposting be used to process hyperaccumulator biomass in nickel agromining?"
<p>Data generated during an experiment of decomposition of biomass of the nickel hyperaccumulator <i>Bornmuellera emarginata </i>by the earthworm <i>Eisenia andrei</i> and associated microoganisms.</p><p>Five files are included:</p><p>"<strong>readme.txt</strong>" is a file where we explain the meaning of each column (and in which units is expressed) in each of the other four files.</p><p>"<strong>biomass.csv</strong>" is a table with biomass of different fractions and the number of <i>Eisenia andrei</i> individuals in each experimental unit.</p><p><strong>"FTIR.csv" </strong>is a file with the raw spectral data we obtained from the litter by Fourier Transform Infrared spectroscopy combined with Attenuated Total Reflectance (FTIR-ATR). First column indicate the wavenumber (cm-1) and the other columns indicate the absorbance values of each biomass sample for each wavenumber.</p><p><strong>"composition.csv"</strong> is a file with the pH, electrical conductivity, basal respiration and concentrations of different chemical elements measured in different fractions of each experimental unit</p><p><strong>"nickel.csv"</strong> contains the pseudototal and DTPA-extractable concentrations of Ni in different compartments of each experimental unit, as well as the total amount of this element (mg of Ni) in each compartment of each experimental unit.</p>
Fig. 2 in Eco-taxonomic profile of an iconic vermicomposter - the 'African Nightcrawler' earthworm, Eudrilus eugeniae (Kinberg, 1867)
Fig. 2. Eudrilus eugeniae: (a) ventral view of Qld specimen, (b) vasa deferentia unite to form the muscular euprostates ducting to the centre of the copulatory chamber (characteristic Y-shaped gland on rhs ducts to lhs), (c) 'spermathecal' aperture and combined oviduct (unravelled) to ovisac opposite saccular gland at junction of duct and 'ampulla' (ovary not shown), (d) prostomium, (e) calciferous glands, hearts and dorsal vessel, (f) dorso-lateral view of caudal segments narrowing to pygomere, (g) cocoon. BoXed are: Perrier's (1872: figs 27, 28, 30) figures of male organs – with penis both retracted and everted – plus an enlargement of a seta (his fig. 29 differs somewhat in its internal organ details); Michaelsen's (1892: fig. 10) figure of female organs also showing ovary "ov" (or ovisac?) on 12/13; plus Beddard's (1895: fig. 30) figure of male organs with glandular appendices to bursa copulatriX sometimes fused to form a "single horseshoe-shaped" appendiX neXt to what Eisen (1900: fig. 44) called the silk-producing "Y-shaped gland" (indicated as "Y-sg").
Fig. 3 in Eco-taxonomic profile of an iconic vermicomposter - the 'African Nightcrawler' earthworm, Eudrilus eugeniae (Kinberg, 1867)
Fig. 3. Distribution map from Michaelsen (1903: chart 1) (hash marks family distribution). Note that New Zealand was in error but other records outside its West African homeland are due mainly to human transportation and the worm's acclimatisation; early Caribbean and Latin American introductions possibly relate to the 16th – 19th century Atlantic slave trade.
An isotope study on Nitrogen and Phosphorus use efficiency and movement in soil in a mimicked vermicompost-based organo-mineral fertilizer
<p>Vermicompost (VC), a stabilized organic material with high organic and humic carbon, and favorable aggregation properties, was tested as a fraction of organo-mineral fertilizers (OMFs), where organic and mineral fractions interact in hotspot areas with surrounding soil. Solutions containing <sup>33</sup>P radioisotope and <sup>15</sup>N labeled mineral fertilizers were combined with vermicompost at two ratios of organic carbon (C<sub>org</sub>) to mineral nitrogen (N) and phosphorus (P) (OMF<sub>7.5C </sub>and OMF<sub>15C</sub>) to simulate OMF granules. Control treatments included unfertilized soil (N<sub>0</sub>P<sub>0</sub>), mineral fertilizer (MF<sub>NP</sub>), and sole vermicompost at 2 rates (OF<sub>7.5C </sub>and OF<sub>15C</sub>). Nitrogen and P uptake by Italian ryegrass (<em>Lolium multiflorum</em>) were measured over in 8 weeks. Furthermore, MF<sub>NP</sub>, OMF<sub>7.5C</sub>, and OMF<sub>15C </sub>treatments were incubated for 10 days without plant to measure atom% <sup>15</sup>N excess and <sup>33</sup>P radioactivity, as indicators of N and P movement from two soil layers (surrounding fertilizer hotspot and below it). In the pot study, OMF<sub>15C </sub>caused 24% lower biomass and less nutrient recovery derived from fertilizer (N -11%, P –8.5%), compared to MF<sub>NP</sub>. In the incubation study, OMF<sub>15C </sub>exhibited +19% atom% <sup>15</sup>N excess in the combined two soil layers, relative to MF<sub>NP</sub>, and +28% <sup>33</sup>P radioactivity in the soil surrounding the hotspot, and –89 % in the soil below it. We interpreted this as a reduction in nutrient availability of the combined vermicompost+mineral fertilizers, due to lower P mobility in soil. The combination of vermicompost with mineral fertilizers can reduce P movement in soil. A higher C<sub>org</sub>:N:P ratio resulted in lower nutrient use efficiency in two months.</p>
Fig. 1. A Eudrilus eugeniae specimen from a in Eco-taxonomic profile of an iconic vermicomposter - the 'African Nightcrawler' earthworm, Eudrilus eugeniae (Kinberg, 1867)
Fig. 1. A Eudrilus eugeniae specimen from a vermicompost site.
An isotope study on Nitrogen and Phosphorus use efficiency and movement in soil in a mimicked vermicompost-based organo-mineral fertilizer
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Bacterial Diversity in Earthworm Castings and Vermicompost Derived from Sericulture Residues and Cattle Manure
<p>This study investigated the bacterial diversity in earthworm castings and vermicompost derived from two different substrates: sericulture residues (silkworm frass) and cattle manure. Earthworms were used to process these organic wastes, and 16S rRNA gene sequencing was employed to characterize the bacterial communities in the initial substrates, the earthworm castings, and the final vermicompost products. The results provide insights into how earthworm-mediated decomposition influences the structure and composition of the bacterial microbiome during the vermicomposting process. This information contributes to a better understanding of the microbial ecology dynamics involved in the conversion of agricultural and livestock wastes into value-added, nutrient-rich vermicompost through vermiculture.</p>
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