ArticleiScience2026
Tobacco straw biochar enhances pak choi growth and quality: Lead/cadmium immobilization and soil fertility improvement.
Article in iScience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To address heavy metal contamination in farmland and promote tobacco straw waste utilization, this pot experiment compared three application rates (1%, 3%, 5%) of tobacco straw biochar on pak choi growth, quality, nutrient and heavy metal uptake, and soil properties and bacterial communities. The results showed that, compared to the control, the addition of biochar increased shoot fresh weight by 15.56-18.97%, and contents of soluble sugar, soluble protein, and vitamin C by up to 109.82%, 62.03%, and 153.36%, respectively. Biochar addition reduced soil bulk density, increased pH, organic matter, alkali-hydrolyzable nitrogen, and available potassium, and reduced Cd and Pb contents in pak choi shoots by 30.76% and 38.98%, respectively. Furthermore, biochar addition significantly increased the Shannon index of the soil bacterial community and the relative abundances of Gemmatimonadota, Myxococcota, and norank_Saprospiraceae. Based on a comprehensive evaluation, the 3% application rate was the most effective.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.