Related Experiment Video
Updated: Sep 19, 2025
09:39
Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
35.2K
Biochar-based fertilizer increases soil nutrients and enhances tea quality: a metabolomics-based analysis
Zhenyu Yang1, Zetao Ren2, Xiangzhen Zhu1
1College of Tea Science and Tea Culture, Zhejiang A & F University, Hangzhou, Zhejiang, China.
Frontiers in Plant Science
|June 16, 2025
Summary
Optimized biochar-based fertilizers (BF2) applied for two years significantly improved soil fertility and tea quality. This enhanced tea flavor by increasing amino acids and reducing bitterness.
Area of Science:
- Agricultural Science
- Soil Science
- Plant Science
Background:
- Biochar-based fertilizers (BF) are recognized for enhancing soil properties and boosting crop yield and quality.
- Optimizing BF application is crucial for sustainable agriculture, particularly in tea cultivation.
Purpose of the Study:
- To evaluate the impact of different biochar-based fertilizer (BF) types and application durations on soil properties, tea growth, quality, and metabolomics.
- To determine the optimal strategy for using BF to improve tea production and quality.
Main Methods:
- A field experiment was conducted using two BF types (BF1: 15% biochar, BF2: 30% biochar) applied for 1 or 2 years.
- Soil nutrients, tea plant growth, tea quality parameters, and metabolomics profiles were analyzed.
Main Results:
- BF application increased soil pH, nutrient availability, bud length, and hundred-bud weight.
- BF2 applied for 2 years significantly improved tea quality by increasing free amino acids, total flavonoids, and soluble sugar, while reducing the phenol-ammonia ratio.
- Metabolomics revealed elevated amino acids (theanine, proline, etc.) and reduced catechins (EGCG, etc.) with BF2, enhancing tea freshness and reducing bitterness/astringency.
Conclusions:
- Prolonged application of optimized biochar-based fertilizer (BF2) significantly enhances soil fertility and tea plant growth.
- BF2 application enriches flavor-related metabolites, leading to improved tea quality and offering valuable insights for tea plantation fertilization strategies.
