Consortium of Management Practices in Long‑Run Improves Soil Fertility and Carbon Sequestration in Drylands of Semi‑Arid Tropics

Chander, G and Singh, A and Abbhishek, K and Whitbread, A M and Jat, M L and Mequanint, M B and Falk, T and Nagaraju, B and Kamdi, P J and Cuba, P and Mandapati, R and Anupama, G V (2023) Consortium of Management Practices in Long‑Run Improves Soil Fertility and Carbon Sequestration in Drylands of Semi‑Arid Tropics. International Journal of Plant Production (TSI). 01-14. ISSN 1735-8043

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A continuously declining carbon in soils of drylands has increasingly become a source of concern and needs integrated solutions to achieve global food security and sustainability goals. This study analysed the impact and sustainability of management practices for climate change mitigation and food security in dryland tropics using long-term field trials. We compared a consortium of interventions, comprised four treatments, viz. traditional farming, improved practice, and regenerative treatments. Additionally, we presented the results of regeneration practices aimed at maintaining the soil macro and micro-aggregates. Results showed significantly higher soil organic carbon (SOC) in the topsoil layer (0–15 cm) of regeneration areas compared to the precision farming area. Our long-term experiments with a consortium of interventions resulted in a promising increase in soil carbon and crop yields. We selected shared socioeconomic pathways for scenarios in future climates and simulated the effect of improved practices in the near and distant future. Our simulation results revealed that adopting improved practices enhanced soil carbon at the rate of 0.7% per year and provided additional income from the yield of pulses in the 2-year rotation. Similarly, we observed an increasing trend in SOC building for improved practices in all future climate scenarios. However, the traditional practice showed a clear decline (0.20–0.15%) in SOC stock for all shared-socio-economic pathways.

Item Type: Article
Divisions: Global Research Program - Resilient Farm and Food Systems
Uncontrolled Keywords: Adaptation, Carbon sequestration, Mitigation, Projection
Subjects: Others > Soil Fertility
Others > Semi-Arid Tropics
Others > Drylands
Depositing User: Mr Nagaraju T
Date Deposited: 26 May 2023 04:39
Last Modified: 26 May 2023 04:39
Official URL:
Projects: Managing Agricultural Soils as Carbon Sinks through adoption of negative emission strategies (MASCS)
Funders: Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ)
Acknowledgement: Authors gratefully acknowledge Charles Renard Analytical Laboratory ICRISAT for soil chemical analysis, and G Panchariya for supporting in profile soil sampling of cultivated and regenerative fields of black soils at ICRISAT.
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