Plant and Soil最新文献

{"title":"Effects of distinct phosphorus application on physiological responses and rhizosheath bacterial community diversity among three lupin species","authors":"Ruixin Wang, Penghao Xie, Han Long, Hirotsuna Yamada, Lydia Ratna Bunthara, Misato Abiko, Jun Wasaki","doi":"10.1007/s11104-024-07126-3","DOIUrl":"https://doi.org/10.1007/s11104-024-07126-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>White lupin (<i>Lupinus albus</i>) mobilize inaccessible phosphorus (P) by producing cluster root that can secrete carboxylates and enhance the phosphatase activity. Blue lupin (<i>L. angustifolius</i>) and yellow lupin (<i>L. luteus</i>) are classified in the same legume genus as white lupin, this study investigates whether blue and yellow lupins can evoke adaptation strategies under P scarcity.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>For this pot experiment, three lupin species were subjected to -P, + Pi (NaH₂PO₄), and + Po (Phytate) treatments. After two months, we determined biomass and P allocation in lupins, Hedley-P fractions, exudate composition, and bacterial diversity in the rhizosheath under distinct treatments.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results indicate white lupin accumulated high P content under -P and + Po treatments, while yellow lupin exhibited similar P content under + Po and + Pi treatments. Additionally, white lupin showed higher citrate secretion, ALPase, and PHYase activities under -P condition, as well as increased PHYase and β-Glu activities under + Po treatment. Particularly, the genera <i>Segetibacter</i>, <i>Granulicell</i>, <i>Candidatus_Methylacidiphilum</i>, and <i>Bryobacter</i>, which contributed to phytate activation, were simultaneously present in the rhizosheaths of both white and yellow lupins under + Po treatment.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>This study elucidates the multifaceted physiological responses of lupins in adapting to P-deficient and provides novel insight into the role of rhizobacteria in phytate mobilization.\u0000</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"125 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 relative importance of biotic filtering reduces with aridity and shrub encroachment in Caragana microphylla shrublands","authors":"Ke Dong, Guang Hao, Yujuan Xu, Jinlong Wang, Lei Chen, Anzhi Ren, Marc W. Cadotte, Yubao Gao, Nianxi Zhao","doi":"10.1007/s11104-024-07118-3","DOIUrl":"https://doi.org/10.1007/s11104-024-07118-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Exploring plant community assembly mechanisms is of central interest to infer community dynamics and succession in the context of global change and intensive human activities. Our aim was to understand the grassland community assembly mechanisms and how species’ functional compositions and groups might change under ongoing climate change and shrub encroachment.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Here, we used standardized effect sizes (SESs) of mean pairwise distance (MPD) to evaluate community functional trait and phylogenetic relatedness patterns and infer how both aridity and shrub cover influence assembly mechanisms in the Inner Mongolia Steppe, China.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Community multi-trait patterns shifted from convergence to stochasticity as aridity increased. Increasing shrub cover directly decreased the convergence of community multi-trait patterns and decreased the presence of perennial grasses as well as CWM_LDMC. Both aridity and shrub cover affected the community LDMC patterns indirectly by negatively regulating the soil nitrogen (N) content. A concave relationship between the soil N content and the community LDMC patterns indicated that abiotic filtering, niche differentiation and biotic filtering dominate community assembly at lower, medium and higher soil N contents, respectively.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results imply that the weakening of biotic filtering and enhancement of stochastic processes with the increasing aridity or shrub cover are driven by losing soil nitrogen and perennial grass which includes the dominant competitors.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"71 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 diameter and moisture content on biomechanical properties of four native Australian trees","authors":"Jiale Zhu, Abbas El-Zein, Guien Miao","doi":"10.1007/s11104-024-07136-1","DOIUrl":"https://doi.org/10.1007/s11104-024-07136-1","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and Aims</h3><p>Roots of plants have been shown to be effective in reinforcing soils against slope failures. Two key mechanical properties in such reinforcement are the root’s tensile strength (TS) and elastic modulus (EM). However, knowledge on the combined effects of root moisture content (RMC) and root diameter on these properties is scarce. The study aims to quantify these relationships for root samples of four native Australian tree (<i>A. costata</i>, <i>B. integrifolia</i>, <i>E. reticulatus</i>, and <i>E. racemosa</i>).</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>A series of tensile tests were conducted and the root diameter at the fracture point and RMC were measured immediately after each test. Data were analysed using both univariate and multivariate analyses.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Both TS and EM declined with increasing diameter. Power-law expressions were found to describe the relationship between TS and diameter moderately well, but less so the one between TS and RMC. Multivariate analyses yielded a double power-law for TS versus diameter and RMC with a stronger fit than univariate ones. A weaker power-law was found between EM and these 2 variables. Of the four trees tested, <i>A. costata</i> exhibited the highest tensile strength and elastic modulus at a 1 mm diameter, while <i>B. integrifolia</i> yielded the lowest.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Considering both diameter and RMC as explanatory variables of TS and EM yield better accounts of experimental data. This work contributes to a better understanding of reinforcement capacity of trees generally, as well as the specific performance of roots of four native Australian trees.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"8 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rhizosphere phosphatase hotspots: microbial-mediated P transformation mechanisms influenced by maize varieties and phosphorus addition","authors":"Xiaoyu Xie, Haoming Li, Xinping Chen, Ming Lang","doi":"10.1007/s11104-024-07164-x","DOIUrl":"https://doi.org/10.1007/s11104-024-07164-x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Rhizosphere serves as a hotspot for phosphatase exudation, which is instrumental in organic P mineralization and thereby facilitates enhanced P uptake by plants. However, further exploration is required to elucidate mechanisms of P transformation regulated by microorganisms in rhizosphere hotspots.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Soil zymography was used to visualize rhizosphere hotspots associated with acid and alkaline phosphatase activities following P addition in two maize genotypes, Zhengdan958 (ZD958) and Xianyu335 (XY335). Metagenomic sequencing was used to investigate shifts in abundance and composition of P cycle genes and microbial communities within phosphatase hotspots.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>ZD958 exhibited higher shoot biomass than XY335 under same P conditions. Hotspots of phosphatase activity were predominantly located in the maize rhizosphere and decreased following P addition. Specifically, P addition resulted in an increase in the abundance of P-uptake and transport genes <i>pstSCAB</i> and a decrease in the abundance of P-starvation regulation gene <i>phoB</i> and inorganic P solubilization gene <i>gcd</i> in ZD958. The relative abundance of phytase-encoding gene (<i>phy</i>) significantly increased with P addition and correlated with soil available P (AP) in XY335. Among the microbial taxa containing hub genes, <i>Streptomyces</i> emerged as the most crucial predictor of soil AP and exhibited a significantly positive relationship with AP for both maize genotypes.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results visualized the rhizosphere phosphatase hotspots, revealing that the genes regulating P cycling differed while <i>Streptomyces</i> harboring P cycling hub genes improve P availability in both maize genotypes. The<u>s</u>e findings provide a scientific basis for increasing the P efficiency employing microbiology.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"55 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142879846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Is Baccharis paniculata (Asteraceae) an effective nurse plant in the matorral of central Chile? Soil vs microclimate effects","authors":"Lohengrin A. Cavieres, Juan Concha-Villalobos","doi":"10.1007/s11104-024-07140-5","DOIUrl":"https://doi.org/10.1007/s11104-024-07140-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Shrubs of the genus <i>Baccharis</i> are considered key nurse plants for the Chilean matorral, but some species have allelopathic compounds in their leaves. These compounds can leach into the soil, casting doubt on their nurse role. We assessed the nurse effect of <i>B. paniculata</i>, a species with allelopathic compounds in their leaves, in a central Chilean matorral site by determining the richness and cover of species growing beneath the shrub canopy and open areas, by quantifying the microclimate beneath the canopy and by experimentally assessing the microclimate versus the soil effect of this species on planted seedlings of tree dominant tree species.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Beneath shrubs and in open areas we recorded the number and cover of species as well air and soil temperature, relative humidity of the air, photosynthetic photon flux density (PPFD) and soil water content. We planted seedlings of <i>Lithrea caustica</i><i>, </i><i>Quillaja saponaria</i>, and <i>Cryptocarya alba</i> in both habitats using soils from open areas and from beneath <i>Baccharis</i> to distinguish their effects on seedling’s photochemical efficiency and survival.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>No woody species grew beneath <i>B. paniculata</i>. Air temperature was similar in both habitats, but soil temperature and PPFD were lower, and soil moisture was higher beneath shrubs. Seedling’s photochemical efficiency and survival were generally higher beneath canopies but were negatively affected by soil from beneath <i>Baccharis</i> shrubs.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our findings question the nurse role of <i>B. paniculata</i> in the Chilean matorral, emphasizing the need to consider other shrub species for restoration initiatives for central Chile.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"14 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Short-term P addition weakens the positive effects of N addition on CH4 uptake in alpine grasslands of the Qinghai-Tibetan Plateau","authors":"Jiannan Xiao, Shikui Dong, Hao Shen, Ran Zhang, Hang Shi, Fencai He, Wei Li, Xiaoyan Li","doi":"10.1007/s11104-024-07070-2","DOIUrl":"https://doi.org/10.1007/s11104-024-07070-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Anthropogenic activities have substantially elevated nitrogen (N) deposition globally and affect ecosystem processes, including soil carbon (C) storage potential. Phosphorus (P) can become a limiting factor for plant production in instances of N deposition, yet the responses of ecosystem C cycles to P enrichment are poorly understood, particularly in sensitive alpine ecosystems.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We conducted a short-term field study to appraise the effects of N and P addition on ecosystem CO₂ emissions and CH₄ uptake in three typical alpine grasslands, alpine meadow, alpine steppe, and cultivated grassland on the Qinghai-Tibet Plateau (QTP). The closed chamber technique was employed to monitor the fluxes of CO₂ and CH₄. Environmental factors, including plant biomass and diversity and soil nutrients, and the abundance of C-cycling genes were analyzed to investigate the factors regulating CO₂ and CH4 fluxes.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results showed that: (i) N and P addition tended to increase CO₂ emissions and CH₄ uptake. Furthermore, P addition weakened the positive effects of N on CH₄ uptake across the three grasslands, but the interaction of N and P addition on CO₂ emissions varied across the three grasslands. (ii) N and P addition affected the fluxes of CO₂ and CH₄ both directly and indirectly through their impacts on soil and plant factors rather than C-cycling functional genes. </p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>These results indicate that in the context of increasing N deposition in the QTP, short-term P addition is not an effective method for mitigating global warming potential and improving soil C sequestration in alpine grassland ecosystems.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"22 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactions between plant-soil feedbacks and climate control root symbioses","authors":"Zhenshan Liu, Bin Hu, Emmanouil Flemetakis, Philipp Franken, Robert Haensch, Heinz Rennenberg","doi":"10.1007/s11104-024-07125-4","DOIUrl":"https://doi.org/10.1007/s11104-024-07125-4","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and Aims</h3><p>Mutualistic root symbioses, particularly those involving mycorrhizal fungi and nitrogen-fixing bacteria, are pivotal to ecosystem productivity and stability. Plant-soil feedbacks (PSFs) and climate serve as primary regulators of these symbiotic interactions, determining their establishment, maintenance, and diversity. PSFs, encompassing the complex interactions between plants and soil biota, modulate nutrient uptake and ultimately influence plant growth and development. Climate not only shapes the abundance, composition and performance of soil biota, but also directly impacts the distribution and response of plant symbioses to environmental shifts including rising temperatures and modified precipitation patterns.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>This review compiles recent advancements in the ecology and diversity of mycorrhizal and nitrogen-fixing associations, emphasizing the interaction between soil biota and climate, and their implications for ecosystem functions in the context of climate change. It also identifies key gaps in our understanding, such as the molecular mechanisms at play, the genetic variability involved, and the impact of global environmental changes on symbiotic networks.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Addressing these questions is essential for a more profound comprehension of the complex plant-soil dynamics that sculpt terrestrial ecosystems.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"100 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"No saturation of soil carbon under long-term extreme manure additions","authors":"Henrike Heinemann, Axel Don, Christopher Poeplau, Ines Merbach, Thorsten Reinsch, Gerhard Welp, Cora Vos","doi":"10.1007/s11104-024-07146-z","DOIUrl":"https://doi.org/10.1007/s11104-024-07146-z","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>According to the carbon (C) saturation concept, the capacity of soils to accumulate stabilized organic C is limited by the number of binding sites on mineral surfaces. The concept and its application are highly debated. Therefore, we aimed at testing this theory using field experimental data.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Soils were sampled from four long-term field experiments with different amounts of organic fertilisation going up to extreme high C inputs (20 Mg C ha⁻¹ yr⁻¹) five times higher than in common agricultural practice. Soils were fractionated by particle size to obtain sand-sized, coarse silt and fine silt plus clay fractions.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>We found a linear relation between C input and soil organic carbon stocks (SOC) even with vast amounts of organic C inputs to the soil at three experimental sites. Across all experiments, C stocks in the sand-sized fraction increased on average by 146%, whereas C stocks in the fine silt plus clay fraction (&lt; 20 µm) increased by just 17% without distinct saturation behaviour. The C sequestration efficiency (amount of C retained as SOC per amount of C input) tended to increase with initial SOC content which is not in line with the saturation theory.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The experiments were subject to C inputs via organic fertilisation that would and should rarely be reached in agricultural practice due to negative side effects. Even under these artificial conditions experiments did not show a distinct saturation behaviour.</p><p>Initial SOC stocks or SOC in the mineral-associated fraction did not appear to limit the potential of soils to sequester additional SOC. It can be concluded that C sequestration is mainly limited by the availability of C inputs from biomass.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"57 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sugar and amino acid exhibit different spatial patterns of root exudation in response to water stress and n limitation in pea","authors":"Aude Tixier, Romain L. Barnard, Christian Jeudy, Marion Prudent","doi":"10.1007/s11104-024-07139-y","DOIUrl":"https://doi.org/10.1007/s11104-024-07139-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>While agroecological transition towards sustainable cropping systems has proposed the integration of nitrogen (N)-fixing-legumes to reduce N inputs, current agriculture faces primary limitations of water and N. It is therefore crucial to identify and hierarchize key drivers of legumes water and mineral (hydromineral) acquisition under limiting conditions, especially the underexplored functions provided by root architecture and rhizodeposition.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We studied the response of spatial exudation patterns in <i>Pisum sativum</i> to contrasted water and N treatments. These patterns were related with structural and functional plant traits involved in carbon (C), N and water uptake, root architecture and root local C and N content. The goal was to i) identify effects of root depth and maturity on local exudation and ii) characterize drivers of C and N allocation during vegetative growth.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>We show that younger and shallow roots tend to exude more sugar and amino acids and that root architecture can influence exudation in response to water and N limitations. Water stress (WS) decreased productivity, induced higher C and N allocation towards roots and a root architecture with steeper growth. WS increased the C cost of soil exploration and amino acid exudation. Nitrate shortage had milder effects than WS.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results suggest that plant adapt their root system to absorb water in deeper wet soil while optimizing its transport in older C-rich roots in response to water stress. These findings create the opportunity to explore trade-offs between water absorption, transport and exudation within the root system, using distinction between young and mature roots.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"48 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactive effects of crop types and nitrogen sources on N2O emissions in a cool humid climate","authors":"Joannie D’Amours, David E. Pelster, Martin H. Chantigny, Andrew C. VanderZaag, Erin L. Smith, Gilles Bélanger, Émilie Maillard, Marie-Élise Samson, Edward G. Gregorich, Denis A. Angers, Isabelle Royer, Marie-Noëlle Thivierge","doi":"10.1007/s11104-024-07116-5","DOIUrl":"https://doi.org/10.1007/s11104-024-07116-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Perennial forages in rotation with annual crops can improve agricultural resilience by increasing soil organic carbon. However, how nitrogen (N) sources interact with rotation diversity to influence soil nitrous oxide (N₂O) emissions is not well understood.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>During three snow-free seasons, N₂O emissions, crop yields, and ancillary variables were measured at three experimental sites with contrasting soil textures (silty clay and sandy loam) in eastern Canada. Using a split-plot design, we compared a corn (<i>Zea mays</i> L.)-soybean (<i>Glycine max</i> [L.] Merr.)-corn rotation and a mixed perennial grass sward receiving N via: i) mineral fertilizer (MIN), ii) liquid dairy manure (LDM), and iii) inclusion of alfalfa (<i>Medicago sativa</i> L.) to the perennial forages with no additional N (LEG).</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>When summed across sites over all three years, cumulative N₂O emissions were greater for LDM than MIN in annual crops (8.75 ± 1.63 and 5.15 ± 0.96 kg N₂O-N ha^–1, respectively), but not in perennial grasses (2.95 ± 0.55 and 3.76 ± 0.70 kg N₂O-N ha^–1, respectively). When comparing N sources within each crop type over the three years, MIN generated greater yields than LDM in annual and perennial crops, but lower yield-scaled N₂O emissions than LDM in annual crops only. During forages post-seeding years, area- and yield-scaled N₂O emissions induced by LDM and LEG were lower than MIN.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results suggest that for a cool humid climate using LDM or LEG in perennial forages and MIN on annual crops can reduce overall N₂O emissions, while generating similar or lower yield-scaled emissions.\u0000</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"51 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}