# Effects of bacterial fertilizer and soil amendment on Spuriopinella brachycarpa (Kom.) Kitag. growth and soil microbiota

## TL;DR

This study explores how bacterial fertilizers and soil amendments improve the growth of a wild vegetable and soil health.

## Contribution

The novel contribution is identifying the combined effects of bacterial fertilizers and soil amendments on plant yield and soil microbiota.

## Key findings

- Treatments with bacterial fertilizers and soil amendments significantly improved plant yield and nutritional quality.
- Soil fertility and microbial community diversity were enhanced by the combined treatments.
- Synergy between bacterial fertilizers and soil amendments likely drives these improvements.

## Abstract

Spuriopinella brachycarpa (Kom.) Kitag. is a nutritious wild vegetable, but its quality deteriorates during artificial cultivation due to soil condition alterations. Microbial fertilizers and soil amendments hold promise for improving cultivation outcomes, yet their combined effects remain under - explored.

A field experiment was conducted with seven treatments, including a control (CK) and six combinations of Trichoderma harzianum, Bacillus subtilis, and earthworm polysaccharide. Plant samples were analyzed for yield, quality, and root architecture, while soil samples were tested for fertility and microbial community characteristics.

Treatments T3 (dual bacterial fertilizers) and T6 (dual bacterial fertilizers + soil amendment) significantly enhanced yield, nutritional quality, and root development. T6 also maintained high soil fertility and optimized the soil microbial community in terms of richness, diversity, and beneficial species abundance.

The positive effects of T3 and T6 are likely due to the synergy between the bacterial fertilizers and the soil amendment, which improves nutrient cycling, soil structure, and microbial functions. However, the study has limitations, such as the need for long - term research and more in - depth exploration of microbial functions.

Action mechanism of soil improver and microbial fertilizer on plants and soil microorganisms.