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This is a Observational study (also classified as: Animal Study).

Effect of PGPRs on the Rhizosphere Microbial Community Structure and Yield of Silage Maize in Saline–Alkaline Fields

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Field trial shows PGPRs enhance maize yield and microbial diversity in saline-alkaline fields, suggesting soil health benefits.

PGPR treatments significantly increased silage maize yields, with harvest density rising by 21.31–45.16%.
TF3 treatment notably boosted fresh weight by 32.50%, while other PGPRs showed variable effects on plant growth.
Microbial analysis demonstrated significant shifts in the rhizosphere community, boosting beneficial microorganisms and reducing harmful ones.
Correlation analysis indicates that maize yield improved with higher ammonium nitrogen and other soil biochemical properties.

Zhao et al. (2025) studied this question.

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