CCN-51, a high-yielding, disease-resistant cacao variety, has become a staple in the commodity Cacao Industry, especially in regions affected by witches’ broom disease. Its traits offer stability for many producers, but the growing dominance of this single variety has raised concerns among industry experts.
In this article, we’ll explore how the prevalence of CCN-51 affects the fine cacao sector, why certain chocolate makers oppose its production, and the ongoing efforts to safeguard cacao diversity for future generations.
Understanding CCN-51
The story of CCN-51 begins with a formidable foe: the witches’ broom fungus. This devastating pathogen, which originated in the lower Amazon basin, has wreaked havoc on cacao crops across several producing nations in South America and the Caribbean over the years.
One of the most significant outbreaks occurred in the late 1890s, crippling the cacao industry in Suriname and resulting in an 80% loss of production. Other countries, including Guyana, Colombia, Ecuador, Trinidad, Tobago, Peru, Grenada, Panama, and Brazil, faced severe impacts from this fungus at various times throughout the 20th century.
In the 1960s, in response to the catastrophic effects of witches’ broom in Ecuador, independent plant scientist Homero Castro developed CCN-51 (Colección Castro Naranjal 51). This hybrid cacao tree was engineered to be highly productive and resistant to diseases, effectively replacing the less resilient varieties that were suffering significant losses. By the late 1990s, CCN-51 began to dominate cacao production in fine cacao regions of Ecuador, reshaping the landscape of the industry.
A Significant Portion of the Market
Today, a substantial portion of commodity chocolate products includes CCN-51 in their formulation. According to a 2015 USDA report on Ecuador’s cacao industry, this variety accounted for 36% of the country’s total cacao production at that time.
This prevalence illustrates how effectively CCN-51 has fulfilled Homero Castro’s vision of combating a destructive disease and revitalizing a struggling industry. However, this raises an important question: what are the potential drawbacks?
Is CCN-51 Endangering the Fine Cacao Sector?
CCN-51 was initially introduced as a temporary solution to safeguard the cacao industry’s survival. Its widespread adoption stems from a market system that prioritizes high yields and consistency over flavor quality. However, as the craft chocolate movement and fine cacao sector expand, consumer preferences are shifting. Craft chocolate makers are increasingly focusing on diverse flavors and production practices, along with a commitment to farmer welfare. Some stakeholders view CCN-51 and other high-yield cacao varieties as potential threats to the fine cacao market and agricultural biodiversity.
The commodity cacao market operates on a model that incentivizes quantity over quality. Farmers benefit financially by maximizing their production, as guaranteed buyers often overlook flavor distinctions or fine cacao attributes. For many cacao growers, allocating resources to cultivate less productive and disease-resistant varieties—without assurance of a buyer—simply isn’t economically viable if they prioritize fine cacao diversification.
What’s at Stake?
CCN-51 enables farmers to achieve high, consistent yields and thrives in full-sun, monoculture environments. While not all CCN-51 growers adopt these practices, the widespread cultivation of this variety has led to the displacement of others that would enhance the diversity of the cacao landscape. As a result, many cacao varieties known for their exceptional flavor and unique traits are vanishing.
Critics contend that this loss of genetic diversity not only limits options for the fine chocolate sector but also jeopardizes the entire cacao industry. Although CCN-51 currently demonstrates resilience to existing climates and diseases, there are no guarantees for the future. A significant reduction in genetic diversity narrows the safety net against emerging challenges that will inevitably impact cacao production. The rapid spread of witches’ broom, for instance, underscores how diseases can strike suddenly and severely. By avoiding genetic monoculture, the industry can better safeguard against catastrophic losses. Furthermore, maintaining a broader genetic pool increases the chances of quicker recovery from any future setbacks.
Temperature fluctuations and extreme weather patterns driven by climate change may render some cacao production methods unsustainable without significant modifications. Indigenous and heirloom cacao varieties often possess traits that could facilitate adaptation to these changing environments.
These heirloom and indigenous varieties typically evolved in mixed or shaded forest ecosystems, fostering habitat conservation and encouraging biodiversity. For farmers, integrating mixed forestry systems enables a broader range of income sources. This approach reduces reliance on a single uniform crop, which is particularly vulnerable to disease outbreaks or unexpected climatic events. By cultivating multiple crops within these systems, farmers can enhance their resilience to potential threats and promote more sustainable agricultural practices.
Conservation Efforts
Numerous initiatives are currently underway to preserve cacao diversity for both its exceptional flavors and genetic integrity. One prominent initiative is the Heirloom Cacao Preservation (HCP) program, which was established in 2012 in partnership with the USDA and the Fine Chocolate Industry Association. This program was created in response to the global challenges of environmental change, deforestation, and economic factors that threaten the availability of high-quality, flavorful cacao. HCP maintains a comprehensive database of cacao genotypes and their flavor profiles, operates a preservation nursery, and offers incentives for farmers to cultivate heirloom cacao varieties.
Greg D’Alesandre, Chief Sourcing Officer at Dandelion Chocolate and a member of the HCP board, highlights the initiative’s focus on promoting cacao diversity. He stresses that a lack of genetic variation not only jeopardizes farmers by making their crops more vulnerable to disease but also poses a risk to the entire industry due to the limited genetic resources available for addressing new challenges. HCP’s mission is to help safeguard the existing diversity of cacao.
Furthermore, HCP collaborates with various organizations to enhance understanding of what constitutes exceptional cacao flavor and supports producers who meet these quality standards with an HCP designation. Cacao gene banks and field collections are also essential for preserving cacao genetics. The International Cocoa Genebank, Trinidad (ICGT) holds the largest and most diverse collection, featuring over 2,300 cacao accessions. These samples are accessible to the public and benefit the global cacao industry by providing plant breeders with a rich variety of genetic material for their breeding programs.
Nevertheless, these collections face the threat of “erosion.” Germplasm stored under unpredictable field conditions is susceptible to degradation. To better protect against potential losses, establishing gene banks in cacao-growing regions, along with multiple locations, could serve diverse communities seeking genetic resources.
Recent advancements in genetic technology enable breeders to identify disease-resistant cacao specimens earlier in the breeding process. For instance, the Cacao Genetic Improvement Program (CATIE) has successfully developed cacao varieties that exhibit both fine flavor and resistance to frosty pod disease, a pathogen with similar characteristics to witches’ broom.
Balancing CCN-51 and Heirloom Varieties
Some industry stakeholders propose blending CCN-51 with fine cacao as a compromise between the high costs of premium cacao and lower-quality commodity cacao. However, others argue that this mixing “dilutes both the value and flavor of the resulting chocolate,” potentially diminishing the market for fine cacao altogether.
Greg emphasizes the role of high-yielding cultivars, stating, “Some of the producers we collaborate with in Ecuador grow both flavorful cacao and CCN-51 to secure a stable income, especially when disease outbreaks are severe.” He continues, “To preserve cacao diversity, we must first establish a market for specialty cacao. If we want to influence change within the industry, we must start by changing our own practices. In my view, exceptional flavor will drive higher prices for cacao, which will, in turn, encourage farmers to maintain a diverse range of varieties on their farms, allowing them to earn a sustainable income.”
While CATIE’s breeding initiatives focus on enhancing disease resistance while retaining good flavor profiles, HCP emphasizes conservation and industry advancement. Greg notes, “Diversity doesn’t imply that everyone should solely cultivate flavor-oriented cacao; it calls for a balanced approach. We cannot expect farmers to act against their own best interests, so it is our responsibility to ensure that maintaining diversity aligns with their economic goals.”