Pedobiologia最新文献

{"title":"Unlocking the promising potential: Trichoderma TrB (CNCM strain I-5327) in Golf course management","authors":"Mehrdad Zarafshar ,&nbsp;Olivier Besnard ,&nbsp;Auriane Thomas ,&nbsp;Bastien Perrot ,&nbsp;Gaëlle Vincent ,&nbsp;Stéphane Bazot","doi":"10.1016/j.pedobi.2024.150972","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150972","url":null,"abstract":"<div><p>In the pursuit of sustainable turfgrass management for golf courses, a series of experiments was conducted to assess the potential of <em>Trichoderma</em> TrB (CNCM strain I-5327) as a natural solution. The research encompassed greenhouse and field trials across two golf courses. The comprehensive pot experiment investigated <em>Trichoderma</em> effectiveness, including native (TrB) and commercial strains, with and without organic amino acids, for turfgrass and soil health. The study followed a two-stage process, stimulating beneficial microorganisms with TrB and introducing <em>Fusarium</em> for biocontrol. Preliminary field trial on one golf course utilized a randomized block design to examine the effects of TrB and Trianum with amino acids, and fungicide on soil microbial community. A second field trial analyzed soil metabolic profiles after applying TrB, Trianum, and fungicide on another golf course. The greenhouse experiments demonstrated promising outcomes from the application of TrB, especially when combined with organic amino acids. This combination not only promoted plant growth and improved soil health but also effectively prevented the activation of <em>Fusarium</em>. In both field trials, it was observed that the introduction of TrB into the soil led to an increase in the population of soil fungi and bacteria and stimulated their activity. Our field data revealed that enriching the soil with TrB had a positive effect on soil microbial communities, while the application of fungicide resulted in a decrease in microbial activities. In summary, our research underscores <em>Trichoderma</em>'s potential (TrB) in sustainable golf course management. These findings highlight TrB as a promising natural solution for improving turfgrass health and soil quality in sustainable management of golf course.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"105 ","pages":"Article 150972"},"PeriodicalIF":2.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0031405624034930/pdfft?md5=9e9117e2943fb5a1dd21938969243488&pid=1-s2.0-S0031405624034930-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141595200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How do soil fauna mediate leaf litter decomposition in north temperate forest ecosystems?","authors":"James C. Burtis,&nbsp;Gwen T. Pipes,&nbsp;Joseph B. Yavitt","doi":"10.1016/j.pedobi.2024.150975","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150975","url":null,"abstract":"<div><p>We investigated how soil fauna impact leaf litter decomposition in north temperate forests using litter bags with different mesh sizes (5 mm, 0.5 mm, and 0.01 mm) to exclude specific fauna by size. The experimental design included two regions (warmer, cooler) in New York State, two forest types (coniferous, deciduous), and litter bags with four tree species (yellow birch, sugar maple, red oak, red pine) that varied in litter resource quality. Excluding most soil fauna with 0.01-mm mesh decreased mass loss from litter bags by 8.8 % overall; by 19 % in the relatively warmer region; by 12 % in coniferous forest stands; and by 18 % for high-quality yellow birch litter but not for high-quality sugar maple litter or low-quality red oak and red pine litters. Mass loss rates were predicted by initial nitrogen concentrations and by initial ratios of carbon / nitrogen and lignin / nitrogen of the leaf litter; these relationships were stronger for litter bags that excluded soil fauna. Fauna extracted from the leaf litter residue were predominantly Acari (mites) and Collembola (springtails). Soil fauna mediated the extent that biochemical fractions (nitrogen, hemicellulose, cellulose, lignin) were lost from decomposing litter but in idiosyncratic ways. Not only are soil fauna impacts on leaf litter decomposition widespread, but, as shown here, they can be idiosyncratic when evaluated with several litter species that differ in resource quality, placed in different forest types, and across a climate gradient. Future analyses of soil fauna impacts on leaf litter decomposition should combine litter-, site-, and climate-related variability to improve understanding and enable prediction.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"105 ","pages":"Article 150975"},"PeriodicalIF":2.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dark septate endophytes enhance the drought tolerance of Haloxylon ammodendron in sterilized and nonsterilized soil","authors":"Qiannan Ye ,&nbsp;Xia Li ,&nbsp;Junmeng Long ,&nbsp;Xueli He","doi":"10.1016/j.pedobi.2024.150971","DOIUrl":"10.1016/j.pedobi.2024.150971","url":null,"abstract":"<div><p>Dark septate endophytes (DSEs) are a type of endophytic fungus that commonly colonize plant root systems in extreme environments, and play a role in enhancing resistance to drought stress. To investigate the potential applications of DSEs in improving drought tolerance of desert plants, three DSE strains isolated from <em>Haloxylon ammodendron</em> for strong drought tolerance - <em>Alternaria tellustris</em> (AT), <em>Cladosporium</em> sp. (CL), and <em>Paraphoma radicina</em> (PR) - were screened through pure culture <em>in vitro</em>. Pot experiments of <em>H. ammodendron</em> were then conducted with different DSE, water, and soil treatments. In both sterilized and nonsterilized soil, DSEs showed growth-promoting and drought-resistant properties, with a stronger effect observed under sterilized soil treatment. The results showed that in sterilized soil, AT and CL increased root biomass, total biomass and root shoot ratio under high drought treatment, while PR effectively enhanced branch number and root biomass under normal water treatment. Physiologically, DSEs improved plant drought tolerance by increasing soluble sugar content and superoxide dismutase activity. Notably, DSE inoculation facilitated the uptake and utilization of soil nutrients such as available phosphorus, nitrate nitrogen, and free amino acids by plants in both sterilized and nonsterilized soil. Overall, our study highlights the potential of DSEs in improving drought resistance and promoting the growth of desert plants.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"105 ","pages":"Article 150971"},"PeriodicalIF":2.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141415250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nematode community structure in sugarcane fields under continuous vinasse fertigation","authors":"Natalia de Jesus Ferreira Costa ,&nbsp;Elvira Maria Regis Pedrosa ,&nbsp;Thais Fernanda da Silva Vicente ,&nbsp;Andressa Cristina Zamboni Machado ,&nbsp;Lilian Margarete Paes Guimarães","doi":"10.1016/j.pedobi.2024.150963","DOIUrl":"10.1016/j.pedobi.2024.150963","url":null,"abstract":"<div><p>Sugarcane vinasse is a residue from ethanol production, which has high content of nutrients and organic matter, improving chemical, physical and biological changes in the soil. This study evaluated nematode community structure, food web, metabolic footprint, and soil quality in sugarcane fields under continuous vinasse fertigation. Soil samples were collected from four sugarcane fields in Pernambuco State, Brazil, under continuous vinasse fertigation for nematode identification at the genus (plant parasites) and family (free-living) level, physical and chemical analyses of the soil. Nine genera of plant-parasitic nematodes and five families of free-living nematodes were identified in sugarcane fields. Plant-parasitic nematodes were dominant, except in the field with five years of continuous vinasse application. The genera <em>Mesocriconema</em>, <em>Meloidogyne</em>, <em>Helicotylenchus</em> and <em>Pratylenchus</em> were frequent in all fields. Predators and fungivores nematodes were few abundant, although, according to the soil food web, all sugarcane fields were low to moderately disturbed environments. A positive correlation was observed between the microbial respiration and Rhabdtidae in fields with five years of vinasse application, and between the electrical conductivity of the soil and <em>Meloidogyne</em> in fields without vinasse application<em>.</em> We highlight those alterations in the structure and composition of the nematode community, and soil characteristics that can occur due to vinasse fertigation in sugarcane fields.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150963"},"PeriodicalIF":2.3,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conventional agricultural management negatively affects soil fauna abundance, soil physicochemical quality and multifunctionality","authors":"Emogine Mamabolo,&nbsp;René Gaigher,&nbsp;James S. Pryke","doi":"10.1016/j.pedobi.2024.150961","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150961","url":null,"abstract":"<div><p>Agricultural intensification is one of the major drivers of biodiversity decline and the losses of its functions in the soil. For soil health and sustainability planning, it is important to understand the effects associated with agricultural management on soil function and biodiversity. This study explored soil fauna, physicochemical properties, soil quality and multifunctionality and how they are affected by agroecosystem management in four different land uses i.e., conventional agriculture, livestock-integrated agriculture, conservation agriculture and natural grassland. The conventional land use favoured some nutrients, however soil of both the integrated and conservation land uses had physical and chemical properties indicative of good soil quality e.g. low compaction, low C:N ratio and stable aggregates. Soil fauna abundance was more responsive to land use and the soil environment compared to species diversity which did not show significant responses as expected. Tillage is known to negatively influence soil fauna, soil functions and physicochemical properties through intense soil structure disruption. Here, its detrimental effect is reflected by the lowest record of soil fauna, poor soil physicochemical quality and low multifunctionality observed within the conventional landuses managed under deep tillage, compared to other land uses which are under zero tillage. Overall, the study shows that the implementation of sustainable soil management practices which improves the physical and chemical status will not only be beneficial for productivity but also for the promotion of important soil fauna, better soil quality and ecosystem multifunctionality.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150961"},"PeriodicalIF":2.3,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0031405624034826/pdfft?md5=d182849c00582cf15fb6bdddf65fc04a&pid=1-s2.0-S0031405624034826-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140893271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon and nutrient cycling responses to repeated application of biochar and NPK fertilizers depend on microenvironmental differences among hierarchical aggregate fractions","authors":"Chinyere Blessing Okebalama ,&nbsp;Bernd Marschner","doi":"10.1016/j.pedobi.2024.150962","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150962","url":null,"abstract":"<div><p>The conversion of bambara groundnut seed residues into biochar facilitated the bioavailability and retention of more nutrients (C, N, P, K and Mg) after repeated application of biochar. However, the mechanisms of microbially mediated biochar-C degradation and nutrient cycling responses to repeated biochar application, particularly in different hierarchical soil aggregates, are largely unknown. A 20-day incubation experiment was conducted on Ultisols from a 4-year cucumber field trial in Nsukka, Nigeria. The effects of repeated application of bambara seed residue biochar with or without NPK fertilizer on soil aggregate associated electrical conductivity (EC), basal respiration, microbial biomass, and soil enzyme activities were determined. The results showed that the concentration of organic matter in the bulk soils increased with biochar and NPK+biochar treatments. These treatments also increased the soil EC, cumulative CO₂ respiration, microbial biomass C and N concentrations, and the activities of tyrosine-aminopeptidase and sulfatase enzymes, compared to the biochar treatment and the control soil. The NPK+biochar treatment contributed 35 % more to β-cellobiosidase activity, but the biochar treatment resulted in 85 % reduction in N-Acetyl-β-glucosaminidase activity, indicating microbial N mining. The NPK and NPK+biochar treatments accounted for a higher percentage of N-, C and N-, and S- cycle enzyme activities, although their composition was relatively higher with the latter treatment. The overall soil biochemical responses were significantly higher in the micro-aggregates (&lt; 0.25 mm) than in the macro-aggregates (≤ 4.75–0.25 mm); least of all in the small macro-aggregates (0.25–1.00 mm). Therefore, repeated application of biochar to N-deficient soils generally does not result in positive soil biochemical responses. However, repeated application of biochar together with NPK fertilizer modulates N limitation and optimizes microbial nutrient cycling processes, especially in micro-aggregates.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150962"},"PeriodicalIF":2.3,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140947403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the influence of ground-dwelling ant bioturbation activity on physico-chemical, biological properties and heavy metal pollution in coal mine spoil","authors":"Shbbir R. Khan ,&nbsp;Poonam C. Singh ,&nbsp;Martin Schmettow ,&nbsp;Satish K. Singh ,&nbsp;Neelkamal Rastogi","doi":"10.1016/j.pedobi.2024.150960","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150960","url":null,"abstract":"<div><p>Coal mining activities increase the soil concentrations of heavy metals manifold thus impacting soil health and biodiversity. The understanding of the impact of bioturbation activities by ant colonies on soil in coal mine spoil site across different restoration ages is not studied. The study aimed to investigate the influence of bioturbation activities by two most common and distinct coal mine site inhabiting ant species (<em>C. compressus</em> and <em>C. longipedem</em>) at six different ages (2, 4, 6, 8, 10 and 12 years old) on the soil heavy metal concentrations of Fe, Zn, Mn, Cu, Ni, Pb, Cd and Cr, pH, OM, TC, TN, soil enzyme activity of DH, ACP, β-glucosidase and proteases properties of soil. Soil samples were collected from opencast coalmine spoils during October and November 2017. Reference (Ref.) soil samples (n=10 per site) were collected (from area adjacent to ant nest colony approximately 2–5 m distance) from a depth of 0–15 cm and ant nest debris soil of each ant species (n=10 per site) were collected from each site. Heavy metal pollution decreased and pH, OM, TC, TN and soil enzyme activity of DH, ACP, β-glucosidase and proteases of soil in both Ref. soil and ant nest debris soil increases with the increase of mine site restoration age. Our study revealed that different age of the mine spoil have more profound effects on the soil quality and heavy metal content. Contrary to our hypothesis, regression analysis did not support our notion that ant bioturbation activity directly accelerate heavy metal breakdown. Instead, our findings suggests that ant colonies prefer to construct their nest for the locations with lower heavy metal concentrations and higher enzyme activity and increase in soil porosity is a key factor behind the low heavy metal concentration in the nest debris soil.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150960"},"PeriodicalIF":2.3,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140880102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temporal monitoring of free-living nematode communities for evaluation of soil health in an arable crop rotation","authors":"Ana I.M. Natalio ,&nbsp;Mohammed Ahmed ,&nbsp;Matthew A. Back ,&nbsp;Andrew Richards ,&nbsp;Simon Jeffery","doi":"10.1016/j.pedobi.2024.150959","DOIUrl":"10.1016/j.pedobi.2024.150959","url":null,"abstract":"<div><p>There is a growing interest in finding reliable methods for monitoring soil health using bioindicators. Free-living nematodes are an ideal indicator group because of their rapid response to changes in soil conditions. This UK study aims to assess their efficacy as bioindicators using two field experiments. In Experiment-1, the treatments included Farmyard Manure, Green Manure consisting of a mix of <em>Raphanus sativus</em> and <em>Vicia</em> sp., and Standard Practice serving as the control receiving N-fertiliser only. The same treatments, except Farmyard Manure, were compared in Experiment-2, which was on a sloping site with a different textured soil. Soil samples were collected twice during each crop season, in Spring and Autumn, for Experiment-1, and only in Autumn for Experiment-2. Ecological indices that categorise nematodes by feeding preference using morphological differences and life strategies (i.e. functional guilds) were calculated. Indices were compared with the abundance of nematode trophic groups to evaluate their use as soil indicators for understanding crop management practices and their legacy effects. Results showed that identification to trophic groups alone was not a sufficiently sensitive approach for assessing changes in the selected management practices. The variations among trophic groups and treatments within the same sampling period were significantly different for bacterivores, fungivores, predators, omnivores, and herbivores. These differences did not always cooccur within the same sampling period, with bacterivores and plant-parasites of economic importance showing greater responses. The food web analyses, calculated by applying the Enrichment Index and Structure Index, and Plant Parasite Index, provided a more sensitive indicator and allowed more effective diachronic monitoring. While using the composition of trophic groups appears to be an attractive solution, their application is best linked to quantifying short-term changes in soil condition and were not as well suited to longer-term soil health monitoring.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150959"},"PeriodicalIF":2.3,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0031405624034802/pdfft?md5=2b5acb7b3bcff32e4f3e81d2f3b208cf&pid=1-s2.0-S0031405624034802-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140268642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taxon-specific ability of saprophagous soil macrofauna to reintegrate carbon from agricultural waste into soil","authors":"Andrey S. Zaitsev ,&nbsp;Anastasia Yu. Gorbunova ,&nbsp;Alexander I. Bastrakov ,&nbsp;Maxim I. Degtyarev ,&nbsp;Donghui Wu ,&nbsp;Daniil I. Korobushkin ,&nbsp;Ruslan A. Saifutdinov ,&nbsp;Konstantin B. Gongalsky","doi":"10.1016/j.pedobi.2024.150958","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150958","url":null,"abstract":"<div><p>Saprophagous soil macroinvertebrates may potentially degrade agricultural wastes. However, it is not known, to what extent and representatives of which taxa may help reintegrating carbon from crop residues back into soil without triggering massive carbon release into the atmosphere. To tackle this problem, we conducted a three-month-long microcosm experiment with 21 different species of macrofauna (each treatment replicated four times) belonging to 13 families to test their ability to degrade wheat straw. Simultaneously CO₂ release from the microcosms was measured. Five species did not survive under experimental conditions. Among the remaining 16 species, three significantly increased wheat straw decomposition with <em>Oryctes nasicornis</em> larvae having inflicted the highest straw mass loss (64%) in comparison with the control, where no animals were added (29%). None of the tested species increased cumulative CO₂ evolution from the microcosms, while two species significantly reduced it. The reduction of carbon loss with aerobic respiration was recorded for <em>Cetonia aurata</em> larvae and the earthworm <em>Dendrobaena veneta</em> (respectively 2.5 and 2-fold in relation to the control – 53.8±4.6 mg CO₂-C g⁻¹ soil dry weight during the entire experiment). The original integrative Carbon Sequestration Index by Macrofauna (CSIM) calculated for both of the measured parameters suggests that the woodlouse <em>Armadillidium vulgare</em> and to a smaller extent the earthworm <em>D. veneta</em> appear to be the most promising organisms for industrial climate-friendly organic waste recycling in terms of survival, straw processing and simultaneous reduction of CO₂ emissions from soil. Our results proved that the engagement of saprophagous macrofauna in crop residue decomposition is a viable technique of carbon reincorporation into the soil. It is accompanied with CO₂ release mitigation into the atmosphere.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150958"},"PeriodicalIF":2.3,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140191001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enchytraeid-stimulation of nitrogen mineralization from green plant residues in an organic soil","authors":"Risako Kato ,&nbsp;Karl Ritz ,&nbsp;Koki Toyota","doi":"10.1016/j.pedobi.2024.150957","DOIUrl":"https://doi.org/10.1016/j.pedobi.2024.150957","url":null,"abstract":"<div><p>Faunal-mediated nutrient cycling, especially N mineralization, has the potential to make a significant contribution to nutrient supply to crop plants in production systems involving e.g. green manure cover crops. We investigated the effects of enchytraeids on N mineralization from mung bean residues in microcosm experiments using an organically-farmed soil with an inherently large population of enchytraeids. Enchytraeids promoted N mineralization by 23% after a distinct lag of between four and 12 weeks, concomitant with a substantial increase in population size followed by an almost complete collapse. Nitrogen release from the necromass would have contributed a small but significant fraction of the N mineralized, and the result suggested the presence of other mechanisms. Enchytraeids suppressed nematode populations, while did not affect the mean weight diameter (MWD) of soil aggregates, although mung bean residues increased MWD. We conclude that enchytraeids have potential to play significant roles in mediating N supply to crops but matching supply-and-demand periods may be challenging.</p></div>","PeriodicalId":49711,"journal":{"name":"Pedobiologia","volume":"104 ","pages":"Article 150957"},"PeriodicalIF":2.3,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}