Optimizing Soil Health and Productivity in Intensive Rice-Wheat Systems Using Conjoint Application of Sewage Sludge.

IF 1.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Bulletin of Environmental Contamination and Toxicology Pub Date : 2026-07-23 DOI:10.1007/s00128-026-04295-y

Surendra Singh Jatav, Satish Kumar Singh, Debabrata Nath, Vandana Kumari, Pramod Kumar Sharma

{"title":"Optimizing Soil Health and Productivity in Intensive Rice-Wheat Systems Using Conjoint Application of Sewage Sludge.","authors":"Surendra Singh Jatav, Satish Kumar Singh, Debabrata Nath, Vandana Kumari, Pramod Kumar Sharma","doi":"10.1007/s00128-026-04295-y","DOIUrl":null,"url":null,"abstract":"This study assessed the long-term sustainability of integrating sewage sludge (SSL) with recommended (100%) or reduced (75%) doses of chemical fertilizers to enhance soil health, crop productivity, and reduce dependency on synthetic fertilizer inputs in the intensive rice-wheat cropping system (RWCS). A field experiment, established in 2010 and evaluated from 2017 to 2020 in Uttar Pradesh, India, employed nine nutrient management treatments in a randomized complete block design with three replications. Treatments included sole application of 100% recommended dose of fertilizers (RDF: N:P: K::120:60:60) and combinations of sewage sludge (20 or 30 t ha-1) with either 100% or 75% RDF. Soil (0-15 cm) physicochemical and biological properties were analyzed to identify key soil health indicators (SHIs) and compute a soil health index (SHI). Integrated treatments significantly outperformed sole RDF, with T3 (100% RDF + 30 t ha-1 SSL), T2 (100% RDF + 20 t ha-1 SSL), and T9 (75% RDF + 30 t ha-1 SSL) yielding highest productivity and SHI (0.85-1.0). Alkaline phosphatase, available K, and microbial biomass N were most sensitive SHIs. T3 notably boosted soil organic carbon, water-holding capacity, and nutrients while lowering bulk density, without exceeding the heavy metal thresholds promoting resilient RWCS aligned with UN Sustainable Development Goals.","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"117 2","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Environmental Contamination and Toxicology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s00128-026-04295-y","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

This study assessed the long-term sustainability of integrating sewage sludge (SSL) with recommended (100%) or reduced (75%) doses of chemical fertilizers to enhance soil health, crop productivity, and reduce dependency on synthetic fertilizer inputs in the intensive rice-wheat cropping system (RWCS). A field experiment, established in 2010 and evaluated from 2017 to 2020 in Uttar Pradesh, India, employed nine nutrient management treatments in a randomized complete block design with three replications. Treatments included sole application of 100% recommended dose of fertilizers (RDF: N:P: K::120:60:60) and combinations of sewage sludge (20 or 30 t ha^-1) with either 100% or 75% RDF. Soil (0-15 cm) physicochemical and biological properties were analyzed to identify key soil health indicators (SHIs) and compute a soil health index (SHI). Integrated treatments significantly outperformed sole RDF, with T₃ (100% RDF + 30 t ha^-1 SSL), T₂ (100% RDF + 20 t ha^-1 SSL), and T₉ (75% RDF + 30 t ha^-1 SSL) yielding highest productivity and SHI (0.85-1.0). Alkaline phosphatase, available K, and microbial biomass N were most sensitive SHIs. T₃ notably boosted soil organic carbon, water-holding capacity, and nutrients while lowering bulk density, without exceeding the heavy metal thresholds promoting resilient RWCS aligned with UN Sustainable Development Goals.

查看原文本刊更多论文

污泥联合施用优化水稻-小麦集约系统土壤健康和生产力。

本研究评估了将污水污泥（SSL）与推荐（100%）或减少（75%）剂量的化肥相结合的长期可持续性，以增强土壤健康，提高作物生产力，并减少对集约化水稻-小麦种植系统（RWCS）中合成肥料投入的依赖。一项田间试验于2010年在印度北方邦建立，并于2017年至2020年进行评估，采用9种营养管理处理，随机完全区组设计，3个重复。处理包括单独施用100%推荐剂量的肥料（RDF: N:P: K::120:60:60）和污水污泥（20或30吨/公顷）与100%或75% RDF的组合。通过对0 ~ 15 cm土壤理化生物学特性的分析，确定土壤关键健康指标，并计算土壤健康指数。综合处理显著优于单一RDF处理，T3 （100% RDF + 30 t ha-1 SSL）、T2 （100% RDF + 20 t ha-1 SSL）和T9 （75% RDF + 30 t ha-1 SSL）的生产率和SHI最高（0.85-1.0）。碱性磷酸酶、速效钾和微生物生物量氮对SHIs最敏感。T3显著提高了土壤有机碳、持水能力和养分，同时降低了容重，而不超过重金属阈值，促进了与联合国可持续发展目标一致的弹性RWCS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.