Soil Use and Management最新文献

{"title":"137Cs radiotracer in investigating influence of hillslope positions and land use on soil erosion and soil organic carbon stock—A case study in the Himalayan region","authors":"Anu David Raj, Suresh Kumar, Kuruppathusheril Radhakrishnan Sooryamol, Sankar Mariappan, Justin George Kalambukattu","doi":"10.1111/sum.13099","DOIUrl":"https://doi.org/10.1111/sum.13099","url":null,"abstract":"The topography and land use/land cover (LULC) of the hillslope play a significant influence on soil erosion because of water, which is considered as a principal factor for the reduction of soil organic carbon content. Reliable information on the impact of erosion mechanism on soil organic carbon stock (SOCS) is essential for effectively accounting for the carbon flux that influences climate change. The main objectives of this study were to determine soil erosion based on the variation of <jats:sup>137</jats:sup>Cs (Radiocesium) radionuclide activity at various hillslope positions and LULC in a hilly and mountainous region of the north‐western Himalayas. Additionally, the relationship between <jats:sup>137</jats:sup>Cs concentration, soil erosion rate and SOCS were examined. Fallout radionuclide‐<jats:sup>137</jats:sup>Cs have emerged as a suitable method for assessing soil erosion in hilly and mountainous regions where rugged topography and extreme weather events restrain the conventional soil erosion assessment. The study revealed very high soil erosion rates of 32.89 and 30.70 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> in the lower hillslope positions with cultivated fields. The lowest soil erosion was obtained with a mean of 0.47 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> from the ridge with grassland, followed by the upper hillslope (5.50 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> under deodar forest and 14.07 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> under pine forest), and the middle hillslope (1.58 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> for deodar and 7.77 t ha<jats:sup>−1</jats:sup> year<jats:sup>−1</jats:sup> for pine forest). The soil erosion rates differ significantly between cultivated and forested regions, and there is also a significant difference between deodar and pine forests. Moreover, a significant difference was found between topographic positions concerning <jats:sup>137</jats:sup>Cs, SOCS and soil redistribution rate. This difference was more pronounced at hillslope positions with different LULC. In both disturbed (cultivated) (<jats:italic>r</jats:italic><jats:sup>2</jats:sup> = .111) and undisturbed (forested and grassland) (<jats:italic>r</jats:italic><jats:sup>2</jats:sup> = .356) soils, positive and statistically significant (<jats:italic>p</jats:italic> < .005) poor relationships were found between SOCS and <jats:sup>137</jats:sup>Cs inventory. This indicates the presence of various factors influencing the soil organic carbon stock (SOCS) mechanism or the indirect contribution of soil erosion‐induced carbon loss. This suggests that forest cover can enhance SOCS in the soil, mitigating the adverse effects of soil erosion and climate change. Consequently, <jats:sup>137</jats:sup>Cs could be effectively used to quantify the SOC stock in soil redistribution over the hillslope affected by soil erosion. Statistical analyses indicated that the <jats:sup>","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"193 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933834","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":"Effects of vineyard inter‐row management on soil physical properties and organic carbon in Central European vineyards","authors":"Gunther Liebhard, Silvia Winter, Johann G. Zaller, Thomas Bauer, Maria Fantappiè, Peter Strauss","doi":"10.1111/sum.13101","DOIUrl":"https://doi.org/10.1111/sum.13101","url":null,"abstract":"The intensity and frequency of inter‐row management in vineyards are highly diverse and depend on local environmental conditions and the wine grower's attitude and experience. Reasons for different management include water conservation, weed and pest control, biological activity promotion and soil fertility and biodiversity preservation. We studied different soil cover management in 16 paired vineyards located at eight sites in the Leithaberg and Carnuntum regions of eastern Austria. To this end, we compared inter‐rows with medium intensity (Periodically Mechanically Disturbed) and low intensity (Permanent Green Cover). We investigated the effects of these different management intensities on soil organic carbon, bulk density, saturated and unsaturated hydraulic conductivity, pore size distribution and percolation stability in the upper soil layer from 3 to 8 cm. Soil organic carbon and percolation stability were significantly higher and soil bulk density was significantly lower in vineyards with permanent green cover. No significant differences were observed for saturated hydraulic conductivity, pore size distribution and plant available water. This may be attributed to a minor effect as a result of the time lag of up to 2 years since the last tillage. Regression analysis to predict plant‐available water for local vineyard soils also showed that texture, total organic carbon and bulk density were suitable predictor variables. These results suggest that both investigated inter‐row management systems support a good soil structure for winegrowers. Organic carbon content and parameters interacting with organic carbon may still be improved with permanent vegetation cover systems; however, the positive effects on plant available water are limited.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"40 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933836","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":"Effects of poly‐γ‐glutamic acid addition on the transformation and distribution of soil nitrogen under different water conditions","authors":"Bo Jing, Wenjuan Shi, Ying Wang, Zhongmin Zhai, Tao Chen","doi":"10.1111/sum.13100","DOIUrl":"https://doi.org/10.1111/sum.13100","url":null,"abstract":"The impact of external poly‐γ‐glutamic acid (γ‐PGA) on soil nitrogen (N) transformation and distribution remains unclear, despite its contrasting effects on N use efficiency. Therefore, soil culture and soil column experiments were conducted using three different γ‐PGA addition rates (0%, 4% and 8% of dry soil weight, w/w) under different soil water contents (40%, 60% and 80% of field water capacity) and dry–wet cycles (0, 2, 4 and 8 times cycles; a single dry–wet cycle involved reducing soil water content from 80% to 40% of field water capacity) in sandy loam soil. The results of soil culture experiment showed that the γ‐PGA significantly increased soil –N and –N contents, as well as nitrification and transformation rates. However, these effects were observed to be influenced by both the culture time and soil water content. In addition, the results of soil column experiment showed that γ‐PGA not only significantly enhanced the soil inorganic nitrogen content within the 0–20 cm soil layer, but also improved water retention capacity. However, the differences between the γ‐PGA treatments gradually diminished with an increase in dry–wet cycle times. These results indicate that γ‐PGA addition enhanced soil inorganic N content and soil water retention by influencing soil N transformation and water distribution. However, the impact of γ‐PGA addition on soil improvement was regulated by soil water content, which should be taken into full consideration in agricultural practices.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"74 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872411","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":"Organic farming improves soil carbon pools and aggregation of sandy soils in the Brazilian semi‐arid region","authors":"Guilherme Viana de Alencar, Lucas Carvalho Gomes, Vanessa Maria de Souza Barros, Maria Eugenia Ortiz Escobar, Teógenes Senna de Oliveira, Eduardo de Sá Mendonça","doi":"10.1111/sum.13097","DOIUrl":"https://doi.org/10.1111/sum.13097","url":null,"abstract":"Organic agriculture can be a feasible alternative to improve soil organic carbon contents, but its effects on different carbon pools and the benefits for soil quality in sandy soils of warm climates are still poorly understood. This study aimed to assess the influence of organic and conventional farming systems on carbon pools, and its effects on soil chemical, physical, and biological quality in sandy soils of a semi‐arid region in northeastern Brazil. The experiment was conducted at three sites with different soil managements and adjacent natural vegetations in the municipality of Guaraciaba do Norte, Ceará, Brazil. Four soil profiles were opened, and soil samples were collected from 0 to 1 m depth for soil chemical analysis, and undisturbed soil samples from 0 to 40 cm depth for soil physical and micromorphological analysis. Organic management led to an increase in total organic carbon (from 7.34 to 20.47 g kg<jats:sup>−1</jats:sup>) at the 0–0.10 m depth, especially in the labile fraction. There was also a threefold increase in cation exchange capacity and up to a fourfold increase in P content in the soil surface layers. Additionally, organic systems led to better soil structure, porosity, and stability, as evidenced by an increase in the average diameter of soil aggregates. Within the aggregates, we found 240% more total organic carbon and 170% more total nitrogen in organic compared to conventional soil management. Micromorphological analysis allowed us to observe that soils under forestry and organic management have coarse quartz grains either totally or partially coated with clay by organic assemblage, while under conventional cultivation, there were reduced amounts of organic assemblages in the spaces between sand grains. Thus, organic farming is seen as a suitable practice for soil organic carbon formation in a short space of time (6 years), contributing to improving soil chemical quality and aggregation in sandy soils in semi‐arid northeastern Brazil.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"4 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872600","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":"From waste to soil: Can we create functioning manufactured soils by recycling rock processing waste?","authors":"Franziska B. Bucka, Julien Guigue, Lena Reifschneider, Evelin Pihlap, Noelia Garcia‐Franco, Anna Kühnel, Ingrid Kögel‐Knabner, Alix Vidal","doi":"10.1111/sum.13094","DOIUrl":"https://doi.org/10.1111/sum.13094","url":null,"abstract":"Rock mining industries do not only exploit and transform extensive areas of land, but also produce vast amounts of rock waste material that lacks an adequate utilization. Some of these rock wastes have the potential to provide nutrients to plants and can therefore have positive impacts on soil properties. Consequently, we tested their potential for valorization as components of manufactured soils for use in urban areas. We conducted a 10‐week incubation experiment of soil mesocosms with sunflowers (<jats:italic>Helianthus annuus</jats:italic> L.) to evaluate the performance of manufactured soils with respect to plant growth and soil properties. We used three common rock materials (augite‐porphyry, greywacke‐hornfels, basalt), ground to powder and mixed into natural soils of either clayey or sandy texture. In order to test the performance under challenging environmental conditions, we applied a drought treatment in addition to a regular watering treatment. All manufactured soils were able to maintain plant growth, although the yield of aboveground biomass was significantly lower compared to the original soils. However, the effects of the water regime and the original soils on the overall plant growth were stronger than the effect of the rock powders, indicating that the manufactured soils were not hampering plant development more than challenging environmental conditions. The preparation of the manufactured soils altered the grain size distribution of the originally sandy and clayey soils. Since the rock powders contributed mainly to the silt‐sized particles, their addition to soils may improve the physical properties of the soil, especially the plant's available water content. We used wet‐sieving to isolate aggregate size fractions and thus analyse the formation of soil aggregates. The manufactured soils had a higher mass contribution of microaggregate‐sized particles, although this was mostly attributed to the presence of silt‐sized rock powder particles instead of aggregate formation. The total organic carbon (OC) content of the original soils was diluted in the manufactured soils, as the rock powders did not contain OC. However, the manufactured soils may have the potential for future OC storage due to the abundance of OC‐free mineral surfaces, which can retain organic matter as well as capture CO<jats:sub>2</jats:sub> through enhanced weathering of primary minerals. Based on this work, the tested rock materials have the potential to be utilized as components in manufactured soils in the urban context that provide soil‐like functions, particularly in terms of sustaining plant growth. For improved results, additional measures to initiate a rapid development of soil structure are highly recommended, for example, by adding an easily decomposable source of organic matter.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"61 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783531","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":"Combining field measurements and process‐based modelling to analyse soil tillage and crop residues management impacts on crop production and carbon balance in temperate areas","authors":"Mathieu Delandmeter, Gilles Colinet, Jérôme Pierreux, Jérôme Bindelle, Benjamin Dumont","doi":"10.1111/sum.13098","DOIUrl":"https://doi.org/10.1111/sum.13098","url":null,"abstract":"Crop residues management is an important issue in the context of climate change. They might be kept on the field and restituted to the soil to enhance its fertility or exported for other uses such as the production of energy through biomethanization. Furthermore, the choices regarding tillage operations impact the potential to incorporate residues, which in turn affects soil physical (e.g. structure, water retention), biological (e.g. organic matter, microorganisms) and chemical (e.g. nutrient release through mineralization) fertility. We combined measurements from a 14‐year field experiment in the Hesbaye loamy region of Belgium and its simulation with the STICS soil‐crop model to investigate the impacts of soil tillage and crop residues management on crop production, soil characteristics and carbon balance. Four treatments were compared, where all combinations of the incorporation versus exportation of crop residues and conventional versus reduced tillage were tested. The comparison of field observations with model simulations proved that the STICS model is adequate to explore the impacts of such contrasted management. The combined analysis of field data and soil‐crop model outputs showed that crop production was positively influenced by conventional tillage but unresponsive to crop residues fate. Reduced tillage led to a clear stratification in observed SOC content in the topsoil (0–30 cm), but also to an increase in simulated SOC stocks (0–26 cm). This SOC gain led to greater water retention under reduced tillage. Moreover, in both tillage treatments, incorporating residues increased soil organic carbon despite the associated augmentation in soil heterotrophic respiration. Finally, the importance of environmental conditions in carbon balance suggests that crop modelling might be very useful to explore the impacts of soil tillage and crop residues management in specific agro‐pedoclimatic contexts, especially when facing climate change.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"45 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783523","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":"The effect of pruned tea leave biochar and cattle manure for soil acidification","authors":"Chen Kelin, Li Yiheng, Zhang Heng, Long Kang, Yan Yunfei, Zhou Yingjie, Tang Keming","doi":"10.1111/sum.13091","DOIUrl":"https://doi.org/10.1111/sum.13091","url":null,"abstract":"Soil acidification in tea gardens has become an increasingly serious problem. In this study, we conducted an outdoor pot experiment to investigate the effects of pruned tea leaf biochar and cattle manure on soil acidification. We observed that amendments effectively increased soil pHBC, which increased 12.43%, 3.24%, 8.38%, 5.68% and 11.35% for BC, M, BCM1, BCM2 and BCM3. Exchangeable K<jats:sup>+</jats:sup>, Na<jats:sup>+</jats:sup>, Ca<jats:sup>2+</jats:sup> and Mg<jats:sup>2+</jats:sup> concentrations increased after application of the amendments. Furthermore, the total exchangeable acidity concentration (EA) and the exchangeable Al<jats:sup>3+</jats:sup> and H<jats:sup>+</jats:sup> concentration (Al<jats:sup>3+</jats:sup> and H<jats:sup>+</jats:sup>) decreased after application of amendments. In addition, pHBC showed a strong positive correlation with K<jats:sup>+</jats:sup>, Na<jats:sup>+</jats:sup>, Ca<jats:sup>2+</jats:sup>, Mg<jats:sup>3+</jats:sup> and cation exchange capacity and strong negative correlations with EA and Al<jats:sup>3+</jats:sup>. Moreover, EA and K<jats:sup>+</jats:sup> were the primary factors influencing pHBC. The relationships among pHBC, EA and K<jats:sup>+</jats:sup> can be expressed as a power function.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"18 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783525","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":"Decrease in soil test phosphorus levels under omitted phosphorus fertilizer application","authors":"Kristin Steinfurth, Gunnar Börjesson, Pascal Denoroy, Bettina Eichler‐Löbermann, Wolfgang Gans, Johannes Heyn, Juliane Hirte, Florian Jansen, Dierk Koch, Ines Merbach, Alain Mollier, Christian Morel, Kerstin Panten, Edgar Peiter, Paul R. Poulton, Thomas Reitz, Gitte Holton Rubæk, Heide Spiegel, Michael van Laak, Sabine von Tucher, Uwe Buczko","doi":"10.1111/sum.13088","DOIUrl":"https://doi.org/10.1111/sum.13088","url":null,"abstract":"Many European cropped soils have high soil test P (STP) values in the top soil because of P accumulation over many years of fertilizer application. This should allow to save P fertilizer applications for some years without STP values decreasing to a level that might negatively impact crop yield. However, the way STP develops under omitted P fertilizer application is not well understood. We examined STP development under omitted P fertilizer application for timeframes between 7 and 46 years on 96 unfertilized treatments (P0 treatments) of 43 European long‐term P field experiments, using five different STP methods. For comparability, values obtained by different STP methods were converted to Olsen‐P concentrations. We fitted exponential decay curves to Olsen‐P data of each P0 treatment defined by initial Olsen‐P values (<jats:italic>Olsen‐P</jats:italic><jats:sub><jats:italic>i</jats:italic></jats:sub>), rates of decrease (<jats:italic>k</jats:italic>) and asymptotes (<jats:italic>A</jats:italic>), reflecting minimum obtainable STP. Subsequently, we analysed whether the variables most commonly recorded in experiments, are sufficient to explain the variation in model parameters, these variables being P export, clay content, C<jats:sub>org</jats:sub> and pH as well as average annual temperature and precipitation. We found that out of our predictor variables, soil clay content, precipitation and temperature were showing the most prominent effects on the parameters <jats:italic>Olsen‐P</jats:italic><jats:sub><jats:italic>i</jats:italic></jats:sub>, <jats:italic>A</jats:italic> or <jats:italic>k</jats:italic>. However, the amount of variation explained by the considered variables was too low to potentially facilitate a prediction of STP decrease, and various P0 treatments showed no clear Olsen‐P decrease or unexpectedly high asymptotes. This hints at a strong influence of the P sorption capacity of the soil with often high potential for replenishment from less available P pools. In connection with P introduction from the subsoil or possibly from surrounding plots, the extension of timeframes of omitted P fertilizer application without reaching critical STP values for crop production, might be explainable. Corresponding effects could not be analysed because of lack of data for most P0 treatments, calling for the additional determination of, for example, the maximum P sorption capacity, total P and subsoil P in future experiments.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"21 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783524","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":"Are soil carbon credits empty promises? Shortcomings of current soil carbon quantification methodologies and improvement avenues","authors":"Xavier Dupla, Emma Bonvin, Cédric Deluz, Léa Lugassy, Eric Verrecchia, Philippe C. Baveye, Stéphanie Grand, Pascal Boivin","doi":"10.1111/sum.13092","DOIUrl":"https://doi.org/10.1111/sum.13092","url":null,"abstract":"As the consequences of climate change are looming large, agricultural soil carbon credits have emerged as an increasingly advocated lever to incentivize the reduction of greenhouse gas emissions and promote carbon storing farming practices. These credits are exchanged on self‐regulated voluntary carbon markets, each of them using distinct protocols to assess the changes in soil carbon stocks and convert them into carbon credits. Although serious discrepancies between protocols have already been noted regarding general carbon credit accounting principles, an in‐depth evaluation of how changes in soil organic carbon stocks are calculated is still lacking. In this context, the primary objective of our study was to investigate how changes in soil organic carbon stock are estimated by the major carbon credit protocols worldwide. We evaluated the requirements of each protocol regarding the estimation of the initial SOC stock as well as the modelling and/or measurement of changes in stock with time. We found that existing protocols vary greatly in their scientific rigour. We showed in particular that some protocols do not require in situ soil analyses to estimate initial soil carbon stocks but rely on regional values, leading them to potentially overestimate these stocks by up to 2.5 times. Our study also found that the protocols relying on models require different farming practices and different levels of information for each practice to estimate SOC stock changes. The protocols relying, at least partly, on soil sampling also displayed different requirements for the sampling design, sampling tools, SOC analysis methods and SOC stock calculation methods. On this basis, we suggest reforms designed to improve and standardize the quantification of carbon stock changes in soils and to improve the reliability of soil carbon credits.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783526","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":"Effects of composite soil conditioner on soil properties and corn yield in a saline–alkali soil","authors":"Yuhang Fang, Hongyan Huang, Xueping Wang, Yuan Zhao, Yan Gao, Xuejun Cui","doi":"10.1111/sum.13095","DOIUrl":"https://doi.org/10.1111/sum.13095","url":null,"abstract":"Biochar is widely used in agricultural production because of its ability to improve the physical and chemical properties of soil and promote crop growth. In this study, a combination of different biochar and lake sediments were used to improve saline soils. The four raw materials, including corn stalk and chicken manure liquefaction product (SMLP), rice husk charcoal (RHC) and two types of sediment (S‐1 and S‐2), which was used to improve the saline–alkali soil, respectively. The most significantly effective applied on the soil was when the composite soil conditioner (CSC) prepared by mixing SMLP, RHC, S‐1 and S‐2 at 5:20:6000:500 t·100 ha<jats:sup>−1</jats:sup>. The results of soil experiments using the above blending levels showed that the spike weight, plant height and root length of corn increased by 12.49%, 47.17% and 22.10%, respectively, and the pH and electrical conductivity (EC) of soil decreased by 4.83% and 24.02%, respectively. The contents of soil nutrients, soil organic matter (SOM), water content (WC) and soluble cations (K<jats:sup>+</jats:sup>, Ca<jats:sup>2+</jats:sup> and Mg<jats:sup>2+</jats:sup>) all presented an increasing trend, and the contents of Na<jats:sup>+</jats:sup> and soluble anions (Cl<jats:sup>−</jats:sup>, CO<jats:sub>3</jats:sub><jats:sup>2−</jats:sup>, HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup> and SO<jats:sub>4</jats:sub><jats:sup>2−</jats:sup>) of soil showed a downward trend. Accordingly, the composite soil conditioner with biochar and dredged sediment achieves a synergistic improvement in soil physical structure and an increase in nutrient content, which is beneficial for promoting the growth characteristics and yield of corn.","PeriodicalId":21759,"journal":{"name":"Soil Use and Management","volume":"5 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783530","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}