Abiotic and biotic drivers of struvite solubilization in contrasting soils

作     者：Antonio RUIZ-NAVARRO Manuel DELGADO-BAQUERIZO Concha CANO-DíAZ Carlos GARCíA Felipe BASTIDA Antonio RUIZ-NAVARRO;Manuel DELGADO-BAQUERIZO;Concha CANO-DÍAZ;Carlos GARCÍA;Felipe BASTIDA

作者机构：Centro de Edafologia y Biologia Aplicada del SeguraConsejo Superior de Investigaciones Cientificas(CEBAS-CSIC)Department of Soil and Water ConservationEspinardoMurcia E-30100Spain ICL Specialty Fertilizers IberiaTotanaMurcia E-30850Spain Laboratorio de Biodiversidad y Funcionamiento EcosistemicoInstituto de Recursos Naturales y Agrobiologia de Sevilla(IRNAS)CSICAv.Reina Mercedes 10Sevilla E-41012Spain IRNAS-CSICUnidad Asociada Universidad Pablo de OlavideUniversidad Pablo de Olavide(UPO)Sevilla 41013Spain Centre for Research and Development in Agrifood Systems and Sustainability(CISAS)Instituto Politecnico de Viana do Castelo(IPVC)Rua Escola Industrial e Comercial Nun'Alvares 34Viana do Castelo 4900-347Portugal 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2023年第33卷第6期

页      面：828-837页

核心收录：

学科分类：07[理学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：the financial support by the Fundacion General CSIC, Spain (Programa ComFuturo) the project PID2020114942RB-I00 funded by MCIN/AEI//10.13039/5011000 11033 supported by a project from the Spanish Ministry of Science and Innovation (No. PID2020-115813RA-I00) a project of the Fondo Europeo de Desarrollo Regional (FEDER) the Consejería de Transformación Económica, Industria, Conocimiento y Universidades of the Junta de Andalucía (FEDER Andalucía 2014-2020 Objetivo temático “01— Refuerzo de la investigación, el desarrollo tecnológico y la innovación”, ANDABIOMA, No. P20_00879) supported by a postdoctoral scholarship as part of the FCT-funded project “Soil Ecosystems in the XXI Century: Drivers, Conservation and Future Scenarios” (No. FCT-PTDC/BIACBI/2340/2020) led by IPVC, Portugal。 

主　　题：bacteria fungi environmental factor operational taxonomic unit phosphorus fertilizer phosphorus fraction phosphorus solubilization soil fertility soil property 

摘      要：Phosphorus(P) limitation in the coming decades calls for the utilization of alternative fertilizers in agriculture. Struvite is a promising P source, but its potential role as a fertilizer is dependent on different physical, chemical, and biological properties, which are very heterogeneous in soil, complicating the prediction of the best soil conditions for its application. Here, we evaluated the solubility of struvite in soil, its redistribution into P fractions, and its potential abiotic and biotic drivers in 62 globally distributed soils with contrasting properties through an incubation assay. We found that after 40 d, about 35% of struvite P was redistributed into soil fractions more accessible to plants and microbes. Phosphorus redistribution from struvite was driven by a complex suite of soil physical, chemical, and microbial properties as well as environmental factors that varied across soils. Soil texture played a critical role in determining the redistribution of P in struvite-amended soils in soluble(H2O extraction), labile(NaHCO3 extraction), and moderately labile(NaOH extraction) fractions.In addition, the soil solution cation concentration was one of the most important drivers of available struvite-derived P fractions. The great importance of texture and cations in determining struvite-derived P fractions in soil was contrasted with the relatively minor role of pH. At the microbial level, the number of bacterial operational taxonomic units(OTUs) from the unfertilized soils that correlated with struvite-derived P fractions was higher than that of fungi. The number of OTUs that correlated with the struvite-derived soluble P fraction was dominated by fungi, whereas the number of OTUs that correlated with the struvite-derived labile P fraction was dominated by bacteria. Overall, this study provided a predictive framework for the potential use of struvite as a P fertilizer in contrasting soils.