Promising results of Conservation Agriculture with Cassava cropping systems on Global warming Potential in Cambodia – Khmer

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Evidence on the impacts of long-term cassava-based conservation agriculture systems on soil  organic carbon and greenhouse gas emissions in Cambodia highlighted that Conservation Agriculture (CA) systems representing credible strategies for the Royal Government of Cambodia to fulfill international conventions (NDC, UNCCD, LDN).

In this experiment, the   SOC   sequestration  rates  under   Conservation agriculture systems ranged from +0.70 to +1.07 tons  C/ha/yr.  This accumulation offsets  global warming potential (GWP100), at a 100-year time scale[1], by removing -2.58  to -3.94  tons  CO2-e/ha/yr from the atmosphere by   storing   it  as  SOC   stock.   In  comparison,   Conventional agriculture removed  only  -0.52   tons   CO 2 -e/ha/yr,   which  was about  4 times lower than CA systems.

In addition, CA systems could also contribute to better farming practices for better products, adding values to the agricultural commodities as “Green Climate Products”.

Net GWP offset per cropping systems and per SOC sequestration (expressed as tons of CO2 eq. /ha/yr)
Negative values indicate the removal of Co2 eq. from atmosphere

Source : Evidence on the impacts of long-term cassava-based conservation agriculture systems on soil  organic carbon and greenhouse gas emissions in Cambodia, Research brief by Vira Leng realised under ASSET project , based on : Diachronic assessment of soil organic C and N dynamics under long-term no-till cropping systems in the tropical  upland  of Cambodia

Vira   Leng,   Rémi   Cardinael,   Florent   Tivet, Vang Seng, Phearum Mark, Pascal Lienhard, Titouan    Filloux,    Johan   Six,    Lyda    Hok, Stéphane   Boulakia,    Clever    Briedis,    João Carlos de Moraes Sá, and Laurent Thuriès SOIL, Volume 10, issue 2, 699–725, the European Geosciences Union
DOI: https://doi.org/10.5194/soil-10-699-2024