Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewedConventional

Biochar combined with N fertilization and straw return in wheat-maize agroecosystem: Key practices to enhance crop yields and minimize carbon and nitrogen footprints

Jinze Bai, Jiajie Song, Danyang Chen, Zhihao Zhang, Qi Yu, Guangxin Ren, Xinhui Han, Xiaojiao Wang, Xiaojiao Wang, Chengjie Ren, Gaihe Yang, Xing Wang, Xing Wang, Yongzhong Feng

Agriculture Ecosystems & Environment · 2023

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Summary

This field-based study examined integrated soil management practices—biochar application combined with optimised nitrogen fertilisation and crop residue retention—in a temperate wheat-maize agroecosystem. The research suggests that strategic combinations of these practices can simultaneously improve productivity and reduce the per-unit carbon and nitrogen environmental footprints, offering a systems-level approach to intensifying cereals sustainably.

Regional applicability

Whilst the specific trial was conducted in China's climate and soil context, the principles of biochar amendment, nitrogen use efficiency, and residue cycling are relevant to UK cereal systems. Applicability would depend on local soil type, climate zone, and the commercial viability of biochar under UK conditions and subsidy frameworks.

Key measures

Crop yield (wheat and maize), carbon footprint (kg CO₂ eq per unit product), nitrogen footprint (kg N per unit product), soil carbon and nitrogen dynamics, greenhouse gas emissions

Outcomes reported

The study measured crop yields, carbon footprint, and nitrogen footprint in a wheat-maize rotation under different management practices combining biochar application, nitrogen fertiliser rates, and straw return. Effects on soil properties and greenhouse gas emissions were likely assessed to evaluate sustainability trade-offs.

Theme
Climate & resilience
Subject
Arable cropping systems
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
China
System type
Arable cereals
DOI
10.1016/j.agee.2023.108366
Catalogue ID
SNmojyxwcy-5xblvr

Topic tags

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