Pheap S., Lefèvre C., Thoumazeau A., Leng V., Boulakia S., Koy R., Hok L., Lienhard P., Brauman Alain, Tivet F. (2019). Multi-functional assessment of soil health under Conservation Agriculture in Cambodia. Soil and Tillage Research, 194, art. no 104349 [9 p.]. ISSN 2351-0846.
Titre du document
Multi-functional assessment of soil health under Conservation Agriculture in Cambodia
Année de publication
2019
Auteurs
Pheap S., Lefèvre C., Thoumazeau A., Leng V., Boulakia S., Koy R., Hok L., Lienhard P., Brauman Alain, Tivet F.
Source
Soil and Tillage Research, 2019,
194, art. no 104349 [9 p.] ISSN 2351-0846
As a response to the worldwide challenge raised by soil degradation, Conservation Agriculture (CA) was proposed to help restoring the three main soil functions, i.e. carbon transformation, nutrient cycling and structure maintenance. However, there is still a lack of integrative studies that assess the overall impact of CA on soil health. To fill the gap, Biofunctooll (R), a set of in-field indicators, was developed to monitor changes in soil biological functioning. In this study, Biofunctool (R) was used to assess the impact of a conventional tillage (CT) and three CA annual-based cropping systems on soil health on a Cambodian Oxisol. Eight indicators related to the three soil functions were monitored and integrated into a Soil Quality index (SQI), i.e. the Biofunctool (R) Index. Overall, we found that soil health was twice higher under the CA treatments than under CT treatment. Although it was similar in the three CA treatments, the contribution of each soil function to the soil health diverged. An analysis of soil carbon dynamics also showed that CA support short-term soil organic carbon stabilization compared to CT. This study demonstrates that Biofunctool (R) is a robust, relevant, time-and cost-effective in-field assessment tool that can be used in multiple ways including cropping system management, capacity building of local stakeholders, and policy dialogue.
Plan de classement
Constituants et propriétés des sols [068PROSOL]
;
Biochimie des relations sol- microorganismes vivants [074SOLMIC]
;
Agronomie générale [076AGRO]
Descripteurs
SOL CULTIVE ; BIOLOGIE DU SOL ; CONSERVATION DU SOL ; CYCLE BIOGEOCHIMIQUE ; SYSTEME DE PRODUCTION ; MATIERE ORGANIQUE ; CARBONE ; QUALITE
Description Géographique
CAMBODGE
Localisation
Fonds IRD [F B010077591]
Identifiant IRD
fdi:010077591
