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.
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