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134 results for “soil fertility”
Soil and understory CO2 respiration, CH4, and N2O fluxes, tree biomass and litter, and soil carbon stock after a long-term N fertilization of a Scots pine forest in Finland
<p>Data of forest soil respiration, soil and undestory respiration, CH4, and N2O fluxes, soil temperature and volumetric water content (Data_Karstula_GHG_temp.swc.csv), continuous soil temperature and moisture data (Data_Karstula_measured_temperature_2021_2023.csv, Data_Karstula_measured_moisture_2021_2023.csv), forest biomass and litter (Data_Karstula_total_biomass_litter.csv, Data_Karstula_measured_litter_2021_2023.csv), and soil C stocks (Data_Karstula_soc.csv) from the boreal Scots pine forest site Karstula after a long-term N fertilization in Finland (62°54'43.343"N; 24°34'16.021"E).</p> <p>The dataset is used for the publication "Tupek et al. : <strong>Lower sensitivity of microbial respiration to soil moisture after long-term N fertilization increases soil carbon retention in a Scots pine forest</strong>. 2024".</p>
Scale-dependent diversity-biomass relationships can be driven by tree mycorrhizal association and soil fertility
<p><span>Diversity–biomass relationships (DBRs) often vary with spatial scale in terrestrial ecosystems, but the mechanisms driving these scale-dependent patterns remain unclear, especially for highly heterogeneous forest ecosystems. This study explores how mutualistic associations between trees and different mycorrhizal fungi (i.e., arbuscular mycorrhizal (AM) vs. ectomycorrhizal (EM) association) modulate scale-dependent DBRs. We hypothesized that in soil-heterogeneous forests with a mixture of AM and EM tree species, (i) AM and EM tree species respond in contrasting ways (i.e., positively vs. negatively respectively) to increasing soil fertility, (ii) AM tree dominance contributes to higher tree diversity and EM tree dominance contributes to greater standing biomass and that as a result, (iii) mycorrhizal associations exert an overall negative effect on DBRs across spatial scales. To empirically test these hypotheses, we collected </span><span>detailed tree distribution and soil information (nitrogen, phosphorus, organic matter, pH, etc.) from seven temperate and subtropical AM-EM mixed forest mega-plots (16–50 ha). Using spatial codispersion null model and structural equation modeling, we identified the relationships among AM or EM tree dominance, soil fertility, tree species diversity and biomass, and thus DBRs across 0.01–1 ha scales. We found first evidence overall supporting the above three hypotheses in these AM-EM mixed forests: (i) In most forests, with increasing soil fertility tree communities changed from EM-dominated to AM-dominated. (ii) Increasing AM tree dominance had an overall positive effect on tree diversity and a negative effect on biomass, even after controlling for soil fertility and number of trees. Together, (iii) the changes in mycorrhizal dominance along soil fertility gradients weakened the positive DBR observed at 0.01–0.04 ha scales in nearly all forests and drove negative DBRs at 0.25–1 ha scales in four out of seven forests. Hence, this study highlights a soil-related mycorrhizal dominance mechanism that could partly explain why in many natural forests, biodiversity-ecosystem functioning (BEF) relationships shift from positive to negative with increasing spatial scale.</span></p>
Data for: The interactive effects of soil fertility and tree mycorrhizal association explain spatial variation of diversity-biomass relationships in a subtropical forest
<p><span>Observed biodiversity-ecosystem function (BEF) relationships are highly variable, particularly in natural forests. However, our understanding of the factors that generate these often contradictory patterns, especially the role of different mycorrhizal associations, is still limited. By relating tree species richness and aboveground biomass (AGB) in a fully-mapped 24-ha subtropical forest dynamics plot, we evaluated the impacts of soil fertility and tree mycorrhizal type in mediating BEF relationships at multiple spatial scales. Our results demonstrate a highly positive total richness effect on AGB for arbuscular mycorrhizal (AM) trees but a negative effect on AGB for ectomycorrhizal (EcM) trees, and their relationships were highly spatial scale dependent. However, the observed BEF relationships turned into positive at small spatial scales (i.e., 10 m and 20 m) after controlling for other confounding factors (i.e., topography, soil fertility, and AM proportion). In addition, we found significant interactions between soil fertility and species richness on AGB. Specifically, the positive effect of total species richness on AGB for major mycorrhizal types gradually weakened with increasing soil fertility, while the positive effect of EcM species richness on AM AGB gradually enhanced at small spatial scales, suggesting the observed diversity effects can be largely attributed to resource niche complementarity and the role of EcM fungi.</span></p> <p><span>Synthesis. We conclude that the variable BEF relationships among forest communities could be explained by spatial variation in abiotic environments and community mycorrhizal composition because different types of symbionts perform different nutrient uptake strategies and ability in protection from antagonists. Our findings provide novel insights into the understanding of the variation in the shape of BEF relationships in natural forests, which is critical for forest management, conservation, and restoration in a changing world.</span></p>
Potassium fertilization effects on cereal yield and soil organic carbon in agricultural ecosystems at the global scale
<p>This dataset includes the raw data of a global meta-analysis study on the responses of cereal yield and soil organic carbon to potassium fertilization in agricultural ecosystems.</p>
Data for: The interactive effects of soil fertility and tree mycorrhizal association explain spatial variation of diversity-biomass relationships in a subtropical forest
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Scale-dependent diversity-biomass relationships can be driven by tree mycorrhizal association and soil fertility
Open the record for dataset details and reuse information.
Plant management but not fertilization mediates soil carbon emission and microbial community composition in subtropical Eucalyptus plantations
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Soil extracellular enzyme activities in plots dominated by trees that associate with arbuscular mycorrhizal or ectomycorrhizal fungi in the N fertilized and reference watershed at the Bear Brook Watershed in Maine, USA.
Our objective was to detect possible differences in N fertilization responses of soil extracellular enzymes in plots dominated by trees that associate with arbuscular mycorrhizal fungi (AM) or ectomycorrhizal fungi (ECM). To do this, we established a plot network of 6 AM and 6 ECM dominated (>65% diameter at breast height) 10 x 10 m plots in the lower elevation hardwood zone of both the reference and N fertilized watersheds (N=24 plots) at Bear Brook Watershed, in Maine USA. We assayed the potential activity of hydrolytic enzymes that release N (N-acetylglucosaminidase; NAG), phosphorus (acid phosphatase; AP), and simple carbon (ß-glucosidase; BG). In addition, we measured microbial allocation to complex C degrading oxidative enzymes phenol oxidase and peroxidase. The activities of these enzymes were measured separately in bulk mineral, rhizosphere, and organic horizon soils during the growing season in 2016.
Meta-analytical data on soil organic, particulate organic, and mineral-associated organic carbon under nitrogen fertilization, elevated atmospheric carbon dioxide, atmospheric warming, increased precipitation, drought, and their combined effects
Data were harvested from journal articles found on the Web of Science Core Collection and the ProQuest Agricultural and Environmental Database that studied soil organic matter fraction carbon responses to global changes (nitrogen fertilization, elevated atmospheric carbon dioxide, atmospheric warming, increased and decreased precipitation, and combined effects). Soil organic carbon fractions were designated as particulate organic carbon or mineral-associated organic carbon based on size and density cutoffs. Relevant metadata, including article information (authors, publication year), environmental information (soil type, climate, and land use), and experiment information (rates, methods) were also added to the dataset.
Improving the understanding of phosphate fertilization in soil P content, acid phosphatase and production of sugarcane
<p>The sugarcane crop is grown in large areas and has a productive chain of billions of dollars. In its chain, they are involved from sugar production to second generation hydrated alcohol. Phosphate nutrition is of great importance for culture, therefore requiring further studies. We sought to evaluate sources and doses of P in the absence/presence of filter cake. The first three models refer to P<sub>2</sub>O<sub>5</sub> sources and doses in the absence of the filter cake and the last three models refer to P<sub>2</sub>O<sub>5</sub> sources and doses in the presence of the filter cake (7.5 Mg ha<sup>-1</sup>, in dry weight). As a statistical basis, we used average, median, maximum, minimum and standard deviation data for the variables evaluated.</p>
Fertilization can accelerate the pace of soil microbial community response to rest-grazing duration in the Three-river Source Region of China
<div> <div> <p><strong><span>Objectives</span></strong> </p> <p><span>Overgrazing leads to grassland degradation and productivity decline. Rest-grazing during the regreen-up period can quickly restore grassland and fertilization is a common restoration measure. Meanwhile, soil microorganisms are more sensitive indicators. Therefore, the experiment of rest-grazing time and fertilization was carried out to explore the response of soil microorganisms to rest-grazing time and fertilization measures. </span></p> <p><span><strong>Methods</strong> </span></p> <p><span>A field control experiment with rest-grazing time and fertilization as factors was conducted from the time when grass returned to green till the livestock moved to the summer pasture in Dawu Town of Maqin County.</span> <span>The primary treatment we established was the five</span> <span>rest-grazing times, including rest-grazing times of 20 days, 30 days, 40 days, 50 days, and traditional grazing was used as a check group. At the same time, the secondary treatment was nitrogen addition of 300 kg·hm<sup>-2</sup> in each primary treatment. </span></p> <p><span><strong>Results</strong> </span></p> <p><span>The results showed that: the total phospholipid fatty acid (total PLFA), actinomyces (Act) and arbuscular </span><span>mycorrhizal fungi (AMF) showed an ever-increasing biomass with the increase of rest-grazing time and the highest was at 50 days of rest-grazing, and they were all significantly higher than CK. In addition, soil microbial biomass carbon-nitrogen ratio (MBC/MBN)</span> <span>had a great influence on the change of microbial community. Applying nitrogen fertilizer can increase the maximum value of biomass of all PLFA groups and the biomass of all PLFA groups changed in an "inverted V" shape with the increase of rest-grazing time. Besides, </span><span>instead of MBC/MBN, NO<sub>3</sub><sup>-</sup>-N</span><span> was positively affected by the biomass of</span> <span>all PLFA groups, which actively regulated the trend of microbial functions. </span></p> <p><span><strong>Conclusions</strong> </span></p> <p><span>The longer rest-grazing time is more conducive to the biomass of all PLFA groups. However, applying nitrogen fertilizer could break this pattern, namely, the 30d rest-grazing would</span> <span>be beneficial to the biomass of all PLFA groups. These findings provide key information that rest-grazing during the regreen-up period is beneficial to all PLFA groups and </span><span>fertilization could change the response of microorganisms to rest-grazing</span><span>, which provides reference measures for the restoration of degraded alpine meadows.</span></p> </div> </div>
data for publication "Dynamics of soil nitrogen and N-cycling-related genes following the application of biobased fertilizers"
<p>Dataset for the scientific publication titled "Dynamics of soil nitrogen and N-cycling-related genes following the application of biobased fertilizers" in the Journal <a href="https://www.sciencedirect.com/journal/applied-soil-ecology">Applied Soil Ecology</a>. </p><p><a href="https://doi.org/10.1016/j.apsoil.2023.105033">https://doi.org/10.1016/j.apsoil.2023.105033</a> </p>
Data for Torppa et al. 2023 'Soil moisture and fertility drive earthworm diversity in north temperate semi-natural grasslands'
<p>The dataset consists of the data that supports the findings of the article 'Soil moisture and fertility drive earthworm diversity in north temperate semi-natural grasslands' written by Torppa et al. and published in Agriculture, Ecosystems & Environment in 2023. The data consists of earthworm community data and environmental data related to soil, vegetation, management and landscape, as well as accession numbers to the earthworm specimens in BOLD and GenBank.</p>
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>
Growth performance and harvest index of sweet potato (Ipoma batatas, Lam) under integrated soil fertility management in Andosol and Nitisol soils
<p>This dataset represent the raw data obtained following the cultivation of two sweet potato varieties (A white skin white-fleshed and a purple skin orange-fleshed) in two agroecological zones of Cameroon dominated by Andosol and Nitisol soils. The soil chemical composition plus that of the organic manures (Rice husk biochar, poultry litter, fast compost and Tithonia diversifolia leaf powder) is part of the data set. The growth parameters; primary branch number, main stem length, petoile length, leaf area index, and harvest index components; adventitious roots, dry biomass, weight of small, medium and big roots, marketable and total yield were collected during the experimentation.</p>
Temporal changes in nutrients in forest soil and roots and root biomass of Fagus sylvatica after P and N fertilization
<p>We report data for nutrients in the organic layer and in mineral soil of Fagus sylvatica forests after P and N fertilization. We separated soil and roots and also report data for root biomass and nutrient contents in these soil layers. In addition, relative soil water contents and pH were measured. The samples were collected in three forests and repeatedly in spring and fall from 2016 to 2018. </p>
Agronomy MDPI 2022 - Supplementary Materials; Proximate chemical analyses for soil, post-harvest soils, and fertilizers
<p>Supplementary Materials (Soil, Post-harvest Soils, and Fertilizers proximate chemical analyses) for the review process in Agronomy MDPI 2022. </p>
Proximate Chemical Analyses of Black Soldier Fly Frass (BSFF), Common House Cricket Frass (CHCF), and NPK 15:15:15 Granulated Slow-Release Fertilizers, Universiti Sains Malaysia Plant House Top Soil, and all Post-harvest Soils of applied Fertilizers.
<p>Proximate Chemical Analyses of Black Soldier Fly Frass (BSFF), Common House Cricket Frass (CHCF), and NPK 15:15:15 Granulated Slow-Release Fertilizers, Universiti Sains Malaysia Plant House Top Soil, and all Post-harvest Soils of applied Fertilizers. </p>
Estimates of soil nutrient limitation on the CO2 fertilization effect for tropical vegetation
<p>Data for CO2 fertilization experiments and CMIP6 model simulations used in publication: "Estimates of soil nutrient limitation on the CO2 fertilization effect for tropical vegetation"</p>
Biochar and nitrogen fertilizer promote rice yield by altering soil enzyme activity and microbial community structure
<p><span>Biochar can significantly change soil properties and improve soil quality.</span> <span>However, the effects of long-term combined application of biochar (B) and nitrogen (N) fertilizer on relationships between soil enzyme activity, microbial community structure and crop yield are still obscure. We characterized these relationships in a long-term (8 years) field experiment with rice, two biochar rates of 0 and 13.5 t ha<sup>-1</sup> year<sup>-1</sup> (B0 and B) and two N fertilizer rates of 0 and 300 kg N ha<sup>-1</sup> year<sup>-1</sup> (N0 and N).</span><span> The repeated, long-term combined applications of biochar and N fertilizer significantly increased microbial biomass carbon and nitrogen (MBC and MBN), but biochar decreased the abundance of total bacteria, fungi, actinomycetes, Gram-positive and Gram-negative bacteria as well as the amount of total phospholipid fatty acids. </span><span>The activity of leucine aminopeptidase (LAP) </span><span>decreased significantly in the biochar-amended and N fertilized treatment, but</span><span> the LAP activity either remained unchanged or increased with biochar amendment at N0. The relative abundance of bacterial phylum <em>Chloroflexi</em> was increased in the combined biochar and N fertilizer treatment. The changes in soil organic matter and the activity of α-1,4-xylosidase were the major properties influencing soil bacterial community composition, whereas the structure of fungal community was governed by MBC, MBN and LAP activity. In addition, long-term biochar and N fertilizer applied together significantly increased rice yield (more than biochar and nitrogen fertilizer applied alone). Yield</span> <span>was significantly positively correlated with LAP activity, but significantly negatively correlated with the relative abundance of Chloroflexi. In conclusion, long-term biochar and nitrogen fertilizer applications increased rice yield, which was associated with altered soil microbial community and enhanced activity of some enzymes.</span></p>
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