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Comparative performance of conservation agriculture vis-a-vis organic and conventional farming, in enhancing plant attributes and rhizospheric bacterial diversity in Cajanus cajan: A field study

Type de document
journalArticle
Langue source
Anglais
Titre français
Titre anglais
Comparative performance of conservation agriculture vis-a-vis organic and conventional farming, in enhancing plant attributes and rhizospheric bacterial diversity in Cajanus cajan: A field study
Auteur(s)
  • SINGH Upma
  • CHOUDHARY Anil K.
  • SHARMA Shilpi
Editeur(s)
Autre(s)
Id
VEVNN2CE
Version
2773
Url zotero
https://www.zotero.org/groups/2567444/items/VEVNN2CE
Date ajout
7 janvier 2021 14:14
Date modification
7 janvier 2021 14:14
Résumé anglais
The intensification of agriculture to meet the ever-increasing demand for food has exerted a negative impact on the ecosystem. Conservation agriculture has been highlighted as a comprehensive approach to sustainability. The present study aimed to assess the performance of conservation agriculture (CA) on plant growth, and its impact on bacterial community composition, specifically guilds involved in nitrogen (N) cycling, in comparison to conventional (CT), and organic agriculture (OA). A field experiment was set up with Cajanus cajan (pigeonpea) under the three agricultural practices with a total of nine modules. The rhizospheric bacterial community composition was examined using Illumina sequencing with the 16S rRNA gene as a marker. The bacterial community involved in nitrogen cycling was examined by analysis of key genes involved in pathways, viz. nitrogen fixation (nifH), nitrification (amoA), and denitrification (narG and nirK) by qPCR. Plant growth parameters and grain yield of C.cajan were relatively higher in CA-based modules. Enhanced abundances of genes involved in the N cycle were observed under CA compared to CT and OA. CA had the highest alpha diversity at the phylum level, while CT had the lowest. Proteobacteria (28%), Planctomycetes (15–19%), Acidobacteria (10–12%), and Bacteroidetes (10–15%) were the dominant phyla across the three agricultural practices. A significant correlation could be drawn between the performance of agricultural management practice, and bacterial community structure and function. The research adds to our understanding of the various mechanisms involved in the promotion of plant growth and soil diversity under sustainable means of agriculture. Besides it emphasizes the significance of rhizospheric bacterial communities as ecological indicators for soil health in arable land.
Note
None
CRAW tags
  • AB - Modalité bio
  • FREDO biologie et travail du sol
  • FREDO santé végétale
  • GEO Inde
  • agriculture de conservation
  • comparaison
  • conventional
WEB tags
  • conservation agriculture
  • conventional agriculture
  • next generation sequencing
  • nitrogen cycle
  • organic agriculture
  • qPCR
Titre de la publication
European Journal of Soil Biology
Volume
99
Pages
103197
Date caractères
July 1, 2020
Date publication
1 juillet 2020
Doi
10.1016/j.ejsobi.2020.103197 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique
Issn
1164-5563 L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.
Url publication
http://www.sciencedirect.com/science/article/pii/S1164556320301412