Influence of purple non-sulfur bacterial augmentation on soil nutrient dynamics and rice ( Oryza sativa ) growth in acidic saline-stressed environments.

Autor: Khuong NQ; College of Agriculture, Can Tho University, Ninh Kieu, Can Tho, Vietnam., Nhat NM; College of Agriculture, Can Tho University, Ninh Kieu, Can Tho, Vietnam., Thu LTM; College of Agriculture, Can Tho University, Ninh Kieu, Can Tho, Vietnam., Thuc LV; College of Agriculture, Can Tho University, Ninh Kieu, Can Tho, Vietnam.
Jazyk: angličtina
Zdroj: PeerJ [PeerJ] 2024 May 17; Vol. 12, pp. e16943. Date of Electronic Publication: 2024 May 17 (Print Publication: 2024).
DOI: 10.7717/peerj.16943
Abstrakt: The aim of the current study was to assess the potency of the exopolymeric substances (EPS)-secreting purple non-sulfur bacteria (PNSB) on rice plants on acidic salt-affected soil under greenhouse conditions. A two-factor experiment was conducted following a completely randomized block design. The first factor was the salinity of the irrigation, and the other factor was the application of the EPS producing PNSB ( Luteovulum sphaeroides EPS18, EPS37, and EPS54), with four replicates. The result illustrated that irrigation of salt water at 3-4‰ resulted in an increase in the Na + accumulation in soil, resulting in a lower rice grain yield by 12.9-22.2% in comparison with the 0‰ salinity case. Supplying the mixture of L. sphaeroides EPS18, EPS37, and EPS54 increased pH by 0.13, NH 4 + by 2.30 mg NH 4 + kg -1 , and available P by 8.80 mg P kg -1 , and decreased Na + by 0.348 meq Na + 100 g -1 , resulting in improvements in N, P, and K uptake and reductions in Na uptake, in comparison with the treatment without bacteria. Thus, the treatments supplied with the mixture of L. sphaeroides EPS18, EPS37, and EPS54 resulted in greater yield by 27.7% than the control treatment.
Competing Interests: The authors declare that they have no competing interests.
(© 2024 Khuong et al.)
Databáze: MEDLINE
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