Introducing the SWAN System: A Comprehensive Approach to Farm Sustainability
The SWAN system, developed by Phillip Terblanche, founder of Trace & Save, is a pioneering tool designed to measure and monitor holistic farm sustainability in a thorough and consistent way. SWAN stands for Soil, Water, Atmosphere, and Nutrients, encapsulating the core elements of agricultural sustainability.
What is the SWAN System?
The SWAN system offers a farm-level assessment that covers:
- Soil health: Evaluating soil biology, fertility and structure indicators.
- Water management: Monitoring water use efficiency and conservation of water resources.
- Atmosphere: Measuring greenhouse gas emissions and carbon sequestration.
- Nutrient utilization: Assessing the efficiency of nutrient use using a farm-gate nutrient accounting.
Purpose
The primary goal of the SWAN system is to annually assess sustainability indicators on farms, enabling farmers to:
- Track their sustainability progress over time.
- Identify opportunities for improvement.
- Provide verifiable evidence of their sustainability efforts to stakeholders.
Components of the SWAN SYSTEM
Soil
Soil health is the cornerstone of sustainable farming. At Trace & Save, we measure a range of indicators that reflect soil biological activity, nutrient levels, and physical attributes. Healthy soil supports robust crop growth, enhances water retention, and minimizes the need for chemical inputs. Our comprehensive soil assessments provide farmers with a clear understanding of their soil's condition, enabling them to implement practices that foster long-term soil health and productivity.
Water
Effective water management ensures that farms use water resources efficiently and responsibly. We assess water usage, irrigation practices, and water quality to help farmers optimize their water consumption and protect local water bodies. By monitoring these aspects, we enable farmers to make informed decisions that conserve water and sustain their crops, even in times of scarcity. Managing the soil-water interface in agriculture is critical for sustainable practices, influencing efficient water use for irrigation and limiting agro-chemical application, both crucial for protecting freshwater resources.
Atmosphere
Reducing greenhouse gas emissions is vital for combating climate change. Our system monitors farm-level emissions and tracks the impact of improved practices on reducing emissions. Soil carbon sequestration is a significant opportunity to mitigate the negative impact of greenhouse gas emissions by using the soil as a stable carbon sink. The SWAN system includes soil health monitoring, which tracks changes in soil carbon levels, indicating whether carbon sequestration is occurring on farms.
Nutrients
Balanced nutrient management is essential for sustainable farming. Through the SWAN system, we assess nutrient inputs like fertilizers, feed, and livestock against the nutrients removed through harvested products, crops, or animals per hectare of land. This assessment provides a utilization percentage and excess nutrients per hectare for key nutrients such as nitrogen, phosphorus, and potassium. These excess nutrients are potential pollutants. Through soil samples, we monitor nutrient loading to ensure that crops receive the right nutrients without causing environmental harm. Our approach helps farmers maintain soil fertility while minimizing the impact on surrounding ecosystems.
Benefits and versatility of the SWAN System
The SWAN system can be adapted to any type of agriculture that benefits from soil health monitoring. The Trace & Save team collaborates with interested stakeholders, such as companies sourcing agricultural products, value chain actors and industry bodies, to assess and monitor the progress of their farms towards improved sustainability. We provide farmers with insights into aspects of their farm that can be improved for greater sustainability.
Data for the SWAN system is collected from farmers but refined and analysed by trained sustainability researchers, creating robust and reliable data. It is not an auditing system but a partnership with farmers to measure and monitor sustainability, providing insights for improvement and comprehensive insights for stakeholders.
Online Reporting
The SWAN system makes use of the Trace & Save research database, ensuring the consistent, secure, and accurate capture and storage of farm-level raw data. The use of a database allows for innovative and flexible analysis and reporting.
Farmers, consultants, and other stakeholders can log onto the Trace & Save website to view SWAN reports for their farms. New reports are continually developed as required. The reports are linked to the database, meaning any changes made to the database result in immediate updates to the online reports. Year-to-year comparisons show trends in sustainability indicators, providing a clear picture of progress over time.