{"title":"Soil nutrients, phosphatase activities and phosphorus species distribution in soils amended sheep manure biochar","authors":"Seyed Hamid Hosseini, Xinqiang Liang, Christophe Niyungeko, Seyedeh Fatemeh Zakeritabar","doi":"10.1007/s11368-024-03869-9","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Sheep manure-derived biochar (SMB) is applied to enhance soil productivity, but its impacts on soil phosphorus (P) species distribution have not been thoroughly investigated. This research aimed to explore the effects of SMB amended soil on phosphatase activities, nutrients, P species distribution, and the underlying mechanisms in agricultural soil.</p><h3 data-test=\"abstract-sub-heading\">Materials and methods</h3><p>The soils (collected from rice and tea cultivation) were incubated for a period of 92 days receiving different rates of biochars 0% (CK), 2% (T<sub>1</sub>) and 4% (T<sub>2</sub>) respectively. The SMB was manufactured at 500°C, and P species were tested via <sup>31</sup>P NMR spectroscopy. Acid phosphomonoesterase (ACP) activities, CEC, NH<sub>4</sub><sup>+</sup>–N, pH, NO<sub>3</sub><sup>‾</sup>–N, Olsen‒ P and alkaline phosphomonoesterase (ALP) were determined.</p><h3 data-test=\"abstract-sub-heading\">Results and discussion</h3><p>The findings suggested that the SMB addition enhanced the pH, NO<sub>3</sub><sup>‾</sup>–N, Olsen‒ P, CEC, NH<sub>4</sub><sup>+</sup>–N contents in both paddy and tea soils. Furthermore, compared with CK (control), application of SMB at T<sub>2</sub> reduced the ACP activities by 85.9 and 74.8%, but promoted the ALP activities by 89.1 and 70.6% for paddy and tea soils, respectively. The findings showed that major forms of P were orthophosphate and orthophosphate monoesters.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>The SMB application increased soil inorganic P, P availability and ALP activities as a result of increasing of P availability by decomposition of organic P. Our research showed that the SMB application is an alternative nutrient for plants instead of chemical fertilizers. Nevertheless, care should be taken with the long-term SMB application, consequently excessive nutrient utilization has the potential to induce eutrophication in aquatic environments.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Soils and Sediments","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s11368-024-03869-9","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose
Sheep manure-derived biochar (SMB) is applied to enhance soil productivity, but its impacts on soil phosphorus (P) species distribution have not been thoroughly investigated. This research aimed to explore the effects of SMB amended soil on phosphatase activities, nutrients, P species distribution, and the underlying mechanisms in agricultural soil.
Materials and methods
The soils (collected from rice and tea cultivation) were incubated for a period of 92 days receiving different rates of biochars 0% (CK), 2% (T1) and 4% (T2) respectively. The SMB was manufactured at 500°C, and P species were tested via 31P NMR spectroscopy. Acid phosphomonoesterase (ACP) activities, CEC, NH4+–N, pH, NO3‾–N, Olsen‒ P and alkaline phosphomonoesterase (ALP) were determined.
Results and discussion
The findings suggested that the SMB addition enhanced the pH, NO3‾–N, Olsen‒ P, CEC, NH4+–N contents in both paddy and tea soils. Furthermore, compared with CK (control), application of SMB at T2 reduced the ACP activities by 85.9 and 74.8%, but promoted the ALP activities by 89.1 and 70.6% for paddy and tea soils, respectively. The findings showed that major forms of P were orthophosphate and orthophosphate monoesters.
Conclusions
The SMB application increased soil inorganic P, P availability and ALP activities as a result of increasing of P availability by decomposition of organic P. Our research showed that the SMB application is an alternative nutrient for plants instead of chemical fertilizers. Nevertheless, care should be taken with the long-term SMB application, consequently excessive nutrient utilization has the potential to induce eutrophication in aquatic environments.
期刊介绍:
The Journal of Soils and Sediments (JSS) is devoted to soils and sediments; it deals with contaminated, intact and disturbed soils and sediments. JSS explores both the common aspects and the differences between these two environmental compartments. Inter-linkages at the catchment scale and with the Earth’s system (inter-compartment) are an important topic in JSS. The range of research coverage includes the effects of disturbances and contamination; research, strategies and technologies for prediction, prevention, and protection; identification and characterization; treatment, remediation and reuse; risk assessment and management; creation and implementation of quality standards; international regulation and legislation.