{"title":"Role of Pseudomonas lini and Brevundimonas nasdae to Enhance Nitrogen Use Efficiency (NUE) and Yield of Oryza sativa L","authors":"","doi":"10.1007/s42106-024-00289-0","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Regular application of synthetic chemicals in rice ecosystem led to loss of nitrogen (N) and affected the native microbial communities. Controlled release fertilizers (CRFs), a solution to poor nitrogen use efficiency (NUE) of urea and associated environmental implications while diminished economic advantages by high CRF use, is major obstacle that still exists. Reviving the diazotrophic native bacteria from rice cultivated locations should be the alternate for bounciness of potential bioinoculants for better performance and yield enhancement. In the present investigation, two potential nitrogen fixing bacteria, <em>Pseudomonas lini</em> GHM32 and <em>Brevundimonas nasdae</em> GHM62 isolated from rice rhizosphere on Rennie medium. These two bacteria were evaluated for yield and NUE in field studies in a randomized block design with treatments, T<sub>1</sub>- 100% recommended dose of nitrogen through neem coated urea (RDN), T<sub>2</sub>- 50% RDN, T<sub>3</sub>- 50% RDN + <em>P. lini</em> GHM32, T<sub>4</sub>- 50% RDN + <em>B. nasdae</em> GHM62 and T<sub>5</sub>- co-application of both bacterial isolates during <em>Rabi</em>-2020-21 (dry season) and <em>Kharif-</em>2021 (wet season). Experimental results for plant height, chlorophyll, nitrogen content and yield in T<sub>3</sub> were on par T<sub>1</sub>. Nitrogen use efficiency indices, such as partial factor productivity (PFP), nitrogen use efficiency (NUE) and nitrogen requirement (NR) of T<sub>3</sub> were at par T<sub>1</sub> throughout the experimental period. This is the first report with field trials on <em>P. lini</em> and <em>B. nasdae</em> as potential diazotrophic bacterial application by reduction in application of inorganic N fertilizer through neem coated urea with a focus on NUE indices and yield improvement of rice.</p>","PeriodicalId":54947,"journal":{"name":"International Journal of Plant Production","volume":"72 1","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Plant Production","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s42106-024-00289-0","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Regular application of synthetic chemicals in rice ecosystem led to loss of nitrogen (N) and affected the native microbial communities. Controlled release fertilizers (CRFs), a solution to poor nitrogen use efficiency (NUE) of urea and associated environmental implications while diminished economic advantages by high CRF use, is major obstacle that still exists. Reviving the diazotrophic native bacteria from rice cultivated locations should be the alternate for bounciness of potential bioinoculants for better performance and yield enhancement. In the present investigation, two potential nitrogen fixing bacteria, Pseudomonas lini GHM32 and Brevundimonas nasdae GHM62 isolated from rice rhizosphere on Rennie medium. These two bacteria were evaluated for yield and NUE in field studies in a randomized block design with treatments, T1- 100% recommended dose of nitrogen through neem coated urea (RDN), T2- 50% RDN, T3- 50% RDN + P. lini GHM32, T4- 50% RDN + B. nasdae GHM62 and T5- co-application of both bacterial isolates during Rabi-2020-21 (dry season) and Kharif-2021 (wet season). Experimental results for plant height, chlorophyll, nitrogen content and yield in T3 were on par T1. Nitrogen use efficiency indices, such as partial factor productivity (PFP), nitrogen use efficiency (NUE) and nitrogen requirement (NR) of T3 were at par T1 throughout the experimental period. This is the first report with field trials on P. lini and B. nasdae as potential diazotrophic bacterial application by reduction in application of inorganic N fertilizer through neem coated urea with a focus on NUE indices and yield improvement of rice.
期刊介绍：
IJPP publishes original research papers and review papers related to physiology, ecology and production of field crops and forages at field, farm and landscape level. Preferred topics are: (1) yield gap in cropping systems: estimation, causes and closing measures, (2) ecological intensification of plant production, (3) improvement of water and nutrients management in plant production systems, (4) environmental impact of plant production, (5) climate change and plant production, and (6) responses of plant communities to extreme weather conditions.
Please note that IJPP does not publish papers with a background in genetics and plant breeding, plant molecular biology, plant biotechnology, as well as soil science, meteorology, product process and post-harvest management unless they are strongly related to plant production under field conditions.
Papers based on limited data or of local importance, and results from routine experiments will not normally be considered for publication. Field experiments should include at least two years and/or two environments. Papers on plants other than field crops and forages, and papers based on controlled-environment experiments will not be considered.
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