Abstract
Organic agriculture has a history of being contentious and is considered by some as an inefficient approach to food production. Yet organic foods and beverages are a rapidly growing market segment in the global food industry. Here, we examine the performance of organic farming in light of four key sustainability metrics: productivity, environmental impact, economic viability and social wellbeing. Organic farming systems produce lower yields compared with conventional agriculture. However, they are more profitable and environmentally friendly, and deliver equally or more nutritious foods that contain less (or no) pesticide residues, compared with conventional farming. Moreover, initial evidence indicates that organic agricultural systems deliver greater ecosystem services and social benefits. Although organic agriculture has an untapped role to play when it comes to the establishment of sustainable farming systems, no single approach will safely feed the planet. Rather, a blend of organic and other innovative farming systems is needed. Significant barriers exist to adopting these systems, however, and a diversity of policy instruments will be required to facilitate their development and implementation.
Generated Summary
This review article examines the performance of organic farming in light of four key sustainability metrics: productivity, environmental impact, economic viability, and social wellbeing. It explores the historical context of organic agriculture, its practices, and certification processes. The study reviews the performance of organic farming systems within the context of sustainability metrics and global challenges, investigating the barriers to adoption and policies needed for their development and implementation. The authors analyze the performance of organic farming in comparison to conventional farming systems, focusing on aspects such as production yields, environmental impact, economic viability, and social wellbeing. They also discuss the barriers to the widespread adoption of organic farming and suggest policy instruments that could support its growth. The research methodology involves a review of existing literature, including meta-analyses and comparisons of various studies on organic and conventional farming practices. The scope of the review encompasses the global food industry, with particular attention to the performance of organic farming systems within the context of sustainability metrics and global challenges.
Key Findings & Statistics
- Sales of organic foods and beverages increased almost fivefold between 1999 and 2013, reaching US$72 billion in 2013, with a projected doubling by 2018.
- Yield averages are 8 to 25% lower in organic systems compared to conventional systems, according to various studies.
- The best yielding organically grown crops or crop groups are rice, soybeans, corn, and grass-clover, yielding 6 to 11% less than conventional systems.
- Fruits and wheat yield 28 and 27% less, respectively, in organic systems.
- Fruits, soybeans, and oilseed were the highest yielding organic crops in another meta-analysis.
- Organic foods have significantly less to no synthetic pesticide residues compared with conventionally produced foods.
- Studies have found that children who eat conventionally produced foods have significantly higher levels of organophosphate pesticide metabolites in their urine than children who eat organically produced foods.
- Organic farming systems consistently have greater soil carbon levels, better soil quality, and less soil erosion compared with conventional systems.
- Organic farms generally have more plant diversity, greater faunal diversity (insects, soil fauna and microbes, birds) and often more habitat and landscape diversity.
- When actual price premiums (higher prices awarded to organic foods) were included, organic agriculture proved significantly more profitable (22 to 35% greater net present values) and had higher benefit/cost ratios (20 to 24%) than conventional agriculture.
- Without organic premiums, net present values (-27 to -23%) and benefit/cost ratios (-8 to -7%) of organic agriculture were significantly lower than conventional agriculture.
- Although price premiums were 29 to 32%, breakeven premiums necessary for organic profits to match conventional profits were only 5 to 7%.
- Extra labor of organic agriculture is beneficial in providing rural employment and development opportunities.
- A switch to organic production would lower the external costs of agricultural production in the United Kingdom by 75%, from £1,514 million yr¯¹ to £385 million yr¯¹.
- The total economic value of three ecosystem services (biological pest control, soil formation, and the mineralization of plant nutrients) in the organic fields was significantly greater at US$232 ha¯¹ yr¯¹ compared with the conventional fields at US$146 ha¯¹ yr¯¹.
- Organic farms were found to use significantly less energy on a per-hectare basis than their conventional counterparts.
- 70% of organic farms and 30% of conventional farms had significantly lower energy consumption per unit of output.
- The increase in vegetable and protein consumption from 2000 to 2007 was two to three times greater for diversified organic farmers than conventional farmers.
Other Important Findings
- Organic agriculture combines traditional conservation-minded farming methods with modern farming technologies, emphasizing rotating crops, managing pests naturally, diversifying crops and livestock, and improving the soil with compost additions and animal and green manures.
- Organic farming systems range from strict closed-cycle systems to more standard systems that simply follow organic certification guidelines.
- Many farms in both developed and less-developed countries implement organic practices but are not certified organic.
- Growers are increasingly turning to certified organic farming systems to provide verification of production methods, decrease reliance on non-renewable resources, capture high-value markets and premium prices, and boost farm income.
- Organic agriculture better balances multiple sustainability goals than conventional counterparts.
- Although organic farming systems produce lower yields compared with conventional agriculture, they are more profitable and environmentally friendly and deliver equal or more nutritious foods with less to no pesticide residues.
- The body of research studies has been heavily biased towards developed countries, whereas studies in the less-developed world, especially in tropical and subtropical climates, need to be greatly increased.
Limitations Noted in the Document
- The review notes that the yield gap between organic and conventional farming systems can vary depending on the specific crops, growing conditions, and management practices.
- Meta-analyses, while useful, must be treated with caution because no single farming system or practice works best everywhere.
- The human health impacts of pesticide exposure from food are not clear, and organically certified pesticides need to be better identified.
- Research on organic agriculture in less-developed countries represents only a small fraction of the overall scientific literature on the topic.
- There are limits to the comparability of studies due to the variation in methodologies, data availability, and the diverse contexts in which the studies were conducted.
Conclusion
The article concludes that organic agriculture, despite its contentious history, holds significant potential for sustainable food production. While organic farming systems may produce lower yields compared to conventional agriculture, they often demonstrate greater environmental benefits, economic viability, and social wellbeing. The review emphasizes that a blend of organic and other innovative farming systems is needed to ensure food security. It stresses the need for a holistic approach that considers all four sustainability goals: production, environment, economics, and social wellbeing. The article highlights the need to overcome the barriers to the adoption of organic practices. The study recommends focusing on creating an enabling environment for the development and adoption of organic and other innovative farming systems. To achieve this, the authors emphasize the need for knowledge-based, legal, and financial policy instruments. The conclusion underscores that, by balancing multiple sustainability goals, organic and other sustainable farming systems can contribute significantly to global food and ecosystem security, and can create a more resilient food system. The authors stress that overcoming these challenges necessitates a multi-faceted approach, including policy changes and scientific advancements. As stated by the US Secretary of Agriculture, Tom Vilsack, “Organic agriculture is one of the fastest growing segments of American agriculture” and is essential to meeting consumer demands.