ArticlePeerJ2019
Biochar prepared at different pyrolysis temperatures affects urea-nitrogen immobilization and N
Article in PeerJ, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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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.
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Who cites it
6 citing papers in PubMed, 32 citations in OpenAlex.
- Pyrolysis temperature regulates biochar-soil interactions to enhance cation exchange capacity, plant growth, and photosynthetic performance.BMC plant biology · 2026Article
- Annual Biochar Application Regulates Maize Internode Development and Yield by Modulating Photosystem II Photosynthetic Efficiency.Plants (Basel, Switzerland) · 2026Article
- A multi-level fuzzy comprehensive evaluation model to optimize biochar application schemes for potato cultivation in North China.Frontiers in plant science · 2025Article
- Biochar one-off application for paddy soilFrontiers in plant science · 2025Article
- Review
- Biochar and urea co-application regulates nitrogen availability in soil.Environmental monitoring and assessment · 2021Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundFood safety has become a major issue, with serious environmental pollution resulting from losses of nitrogen (N) fertilizers. N is a key element for plant growth and is often one of the most important yield-limiting nutrients in paddy soil. Urea-N immobilization is an important process for restoring the levels of soil nutrient depleted by rice production and sustaining productivity. The benefits of biochar application include improved soil fertility, altered N dynamics, and reduced nutrient leaching. However, due to high variability in the quality of biochar, the responses of N loss and rice productivity to biochar amendments, especially those prepared at different pyrolysis temperatures, are still unclear. The main objectives of the present study were to examine the effects of biochar prepared at different pyrolysis temperatures on fertilizer N immobilization in paddy soil and explore the underlying mechanisms.
methodsTwo biochar samples were prepared by pyrolysis of maize straw at 400 °C (B400) and 700 °C (B700), respectively. The biochar was applied to paddy soil at three rates (0, 0.7, and 2.1%, w/w), with or without N fertilization (0, 168, and 210 kg N ha
resultsCompared with the non-biochar control, biochar significantly decreased soil bulk density while increasing soil porosity, irrespective of pyrolysis temperature and N fertilizer level. Under B400 and B700, a high biochar rate decreased N loss rate to 66.42 and 68.90%, whereas a high N level increased it to 77.21 and 76.99%, respectively. Biochar also markedly decreased N
conclusionIrrespective of pyrolysis temperature, biochar had a positive effect on residual soil
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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.