Journal
PLANTS-BASEL
Volume 12, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/plants12051002
Keywords
biochar; CO2; N2O; CH4 emissions; cumulative emissions; global warming potential; soil moisture; soil temperature
Categories
Ask authors/readers for more resources
Agricultural waste can have a catastrophic impact on climate change if not managed sustainably. Swine-digestate-manure-derived biochar may be a sustainable solution to tackle greenhouse gas emissions. This study investigated the use of biochar to reduce soil GHG emissions.
Agricultural waste can have a catastrophic impact on climate change, as it contributes significantly to greenhouse gas (GHG) emissions if not managed sustainably. Swine-digestate-manure-derived biochar may be one sustainable way to manage waste and tackle GHG emissions in temperate climatic conditions. The purpose of this study was to ascertain how such biochar could be used to reduce soil GHG emissions. Spring barley (Hordeum vulgare L.) and pea crops in 2020 and 2021, respectively, were treated with 25 t ha(-1) of swine-digestate-manure-derived biochar (B-1) and 120 kg ha(-1) (N-1) and 160 kg ha(-1) (N-2) of synthetic nitrogen fertilizer (ammonium nitrate). Biochar with or without nitrogen fertilizer substantially lowered GHG emissions compared to the control treatment (without any treatment) or treatments without biochar application. Carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) emissions were directly measured using static chamber technology. Cumulative emissions and global warming potential (GWP) followed the same trend and were significantly lowered in biochar-treated soils. The influences of soil and environmental parameters on GHG emissions were, therefore, investigated. A positive correlation was found between both moisture and temperature and GHG emissions. Thus, biochar made from swine digestate manure may be an effective organic amendment to reduce GHG emissions and address climate change challenges.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available