Advances in Crop Science and Technology
Open Access

Agriculture; Revolution; Precision farming; Genetic engineering; Vertical farming; Robotics; Automation; Sustainable practices; Food production; Sustainability

Introduction

Soil carbon plays a fundamental role in the Earth’s carbon cycle and has a profound impact on climate change mitigation. It acts as a significant carbon sink, absorbing and storing atmospheric carbon dioxide (CO2). Moreover, soil carbon is essential for soil health, fertility, and overall agricultural productivity. Understanding the dynamics of soil carbon and implementing effective management strategies is crucial for sustainable land use and achieving global climate goals [1].

Soil carbon dynamics

The soil carbon pool consists of both organic carbon derived from plant and animal residues, and inorganic carbon associated with mineral compounds. Soil carbon dynamics are influenced by a range of factors, including climate, vegetation type, land management practices, and soil characteristics. These factors govern the rates of carbon input, decomposition, and loss, thereby impacting the overall soil carbon stock [2-3].

Factors affecting soil carbon storage

Climate

Climatic conditions such as temperature and precipitation influence the decomposition rates of organic matter, thereby affecting soil carbon storage. Warmer and wetter regions generally exhibit higher decomposition rates, leading to reduced soil carbon accumulation [4].

Land use and management

Practices Land use changes, such as deforestation and conversion of grasslands to croplands, can result in substantial soil carbon loss. Additionally, intensive agricultural practices, including excessive tillage, monocropping, and overuse of synthetic fertilizers, can deplete soil carbon stocks. On the other hand, adopting conservation practices like cover cropping, agroforestry, and reduced tillage can enhance soil carbon sequestration [5].

Soil characteristics

Soil properties, such as texture, structure, and mineralogy, impact the capacity of soils to store and stabilize carbon. Soils with high clay and organic matter content tend to have higher carbon holding capacity compared to sandy or loamy soils. Additionally, soil pH, microbial activity, and nutrient availability influence the decomposition rates of organic matter and, consequently, soil carbon dynamics [6].

Strategies for soil carbon sequestration

Conservation agriculture

Conservation agriculture practices, including reduced tillage, crop residue retention, and diversified cropping systems, promote soil carbon sequestration. These practices enhance soil structure, increase organic matter input, and reduce soil disturbance, thereby improving carbon storage capacity and soil health [7].

Agroforestry

Integrating trees into agricultural landscapes through agroforestry systems can significantly enhance soil carbon sequestration. Tree roots contribute to organic matter accumulation, while shade and litterfall mitigate soil temperature fluctuations, promoting microbial activity and carbon stabilization.

Cover cropping

Cover crops, grown between cash crop cycles, improve soil carbon stocks by providing continuous root biomass and protecting the soil surface from erosion. Leguminous cover crops, in particular, fix atmospheric nitrogen, reducing the need for synthetic fertilizers and enhancing soil fertility [8].

Biochar application

Biochar, a stable form of carbon produced through pyrolysis of biomass, can be added to soils as a soil amendment. Biochar not only increases soil carbon content but also improves water holding capacity, nutrient retention, and microbial activity.

Future perspectives and challenges

While significant progress has been made in understanding and promoting soil carbon sequestration, several challenges and future perspectives deserve attention [9].

Scaling up and adoption

One of the major challenges is scaling up the adoption of soil carbon management practices. There is a need for widespread awareness campaigns, policy support, and financial incentives to encourage farmers and land managers to implement sustainable practices that enhance soil carbon sequestration. Collaboration between scientists, policymakers, and agricultural stakeholders is crucial for effective knowledge transfer and technology dissemination.

Precision agriculture and digital technologies

Advancements in precision agriculture and digital technologies offer opportunities to optimize soil carbon management. Soil sensors, remote sensing, and data analytics can provide real-time information on soil carbon dynamics, enabling targeted interventions and improved decision-making for sustainable land use.

Climate change adaptation

Climate change poses additional challenges to soil carbon dynamics. Increased temperatures, altered precipitation patterns, and extreme weather events can influence soil carbon storage and stability. Developing adaptive management strategies that account for climate variability and change is essential for maintaining and enhancing soil carbon stocks in the face of a changing climate [10].

Integrating soil carbon into climate policies

Integrating soil carbon into national and international climate policies is crucial. Incorporating soil carbon sequestration into carbon offset mechanisms, such as carbon markets or payments for ecosystem services, can provide financial incentives for farmers and landowners to adopt practices that enhance soil carbon storage. Robust monitoring, reporting, and verification systems are necessary to ensure the credibility and transparency of soil carbon projects.

Conclusion

The importance of soil carbon in climate change mitigation and sustainable agriculture cannot be overstated. Protecting and enhancing soil carbon stocks should be a priority in global climate strategies and agricultural policies. The adoption of conservation practices, such as conservation agriculture, agroforestry, cover cropping, and biochar application, can facilitate soil carbon sequestration while improving soil health and agricultural productivity. Further research is needed to develop region-specific approaches and optimize management practices for maximizing soil carbon sequestration potential. By recognizing the role of soil carbon as a key ally in the fight against climate change, we can pave the way for a more sustainable future. Soil carbon is a critical element for climate change mitigation and sustainable agriculture. Its sequestration potential can significantly contribute to reducing greenhouse gas emissions and building climate resilience. Implementing management practices that promote soil carbon accumulation is not only beneficial for climate goals but also for soil health, nutrient cycling, and agricultural productivity. It requires a holistic and integrated approach that combines scientific knowledge, policy support, and farmer engagement. By recognizing soil carbon as a valuable resource and prioritizing its protection and enhancement, we can move closer to a more sustainable and resilient future. Continued research and collaborative efforts are essential to unlock the full potential of soil carbon sequestration and ensure its long-term effectiveness in mitigating climate change impacts.

1. Ahmad Nazarudin MR, Mohd Fauzi R, Tsan FY (2007) Effects of paclobutrazol on the growth and anatomy of stems and leaves of Syzygium campanulatum. J Trop Forest Sci (2): 86-91.

Google Scholar

2. Ahmad Nazarudin MR, Tsan FY, Mohd FR (2012) Morphological and physiological response of Syzygium myrtifolium (Roxb) Walp, to paclobutrazol. Sains Malays 41(10): 1187-1192.

Google Scholar

3. Alkhassawneh NM, Karam NS, Shibli RA (2006) Growth and flowering of black iris (Iris nigricans Dinsm.) following treatment with plant growth regulators. Sci Hort 107: 187-193.

Google Scholar

4. Almekinders CJM, Struik PC (1967) Shoot development and flowering in potato (Solanum tuberosum L.). Potato Res 39: 581-607.

Google Scholar

5. Anders C, Bargsten K, Jinek M (2016) Structural plasticity of PAM recognition by engineered variants of the RNA-guided endonuclease Cas9. Mol Cell 61(6): 895-902.

Indexed at, Google Scholar, Crossref

6. Blomme G, Jacobsen K, Ocimati W, Beed F, Ntamwira J, et al.  (2014) Fine-tuning banana Xanthomonas wilt control options over the past decade in East and Central Africa. Eur Journal of Plant Pathology 139: 265-281.

Google Scholar

7. Callaway E (2018) CRISPR plants now subject to tough GM laws in European Union. Nature 560: 16-59. 

Indexed at, Google Scholar, Crossref

8. Cardi T (2016) Cisgenesis and genome editing: combining concepts and efforts for a smarter use of genetic resources in crop breeding. Plant Breeding 135: 139-147.

Google Scholar

9. Parera CA, DJ Cantliffe (1994) Pre-sowing seed priming. Hort 6: 109-141.

Google Scholar

10. Afzal I, Shabir R, Rauf S (2019) Seed production technologies of some major field crops. 655-678.

Google Scholar