New Disease-Resistant Potato Variety Offers Hope to African Farmers Battling Late Blight
Late blight, the plant disease that ravaged potato crops causing the Irish Potato Famine nearly two centuries ago, continues to inflict devastating losses worldwide, with annual damages estimated between USD 3 billion and 10 billion. As climate change accelerates, this blight is encroaching on higher altitudes in the Andes and beyond, threatening the livelihoods of millions of smallholder farmers who depend on potatoes—a vital staple crop—for food security and income.
However, a breakthrough innovation brings a powerful ray of hope: the development of a new disease-resistant potato variety called CIP-Asiryq. This variety, created by scientists at the International Potato Center (CIP) in Lima, Peru, represents a ground-breaking stride towards climate-resilient agriculture. The variety resists late blight, requires fewer fungicide applications, cooks 25% faster than popular local varieties, and possesses versatility suited for both fresh consumption and processing markets, making it a game changer for farmers and the wider potato value chain.
In Zimbabwe, farmers face similar struggles with late blight, which severely reduces yields and increases input costs. The introduction of CIP-Asiryq or similar resistant varieties adapted to local conditions could drastically improve outcomes, aligning with Zimbabwe’s National Development Strategy 1 (NDS1), which emphasises strengthening climate-smart agriculture and promoting opportunities for women and youth in agribusiness.
### The science behind CIP-Asiryq
CIP-Asiryq was developed by incorporating genetic resistance from Solanum cajamarquense—a wild potato relative conserved in CIP’s genebank, which safeguards the world’s largest collection of potato diversity. This involved careful breeding under the Biodiversity for Opportunities, Livelihoods, and Development (BOLD) project, funded by the Government of Norway and coordinated by the Crop Trust.
Such innovations demonstrate how crop diversity and international collaboration can surmount persistent agricultural challenges. Dr Thiago Mendes, CIP scientist and lead of the BOLD potato pre-breeding project, highlighted that CIP-Asiryq’s versatility allows farmers to cater to both fresh vegetable markets and processing industries, expanding profitability and market access.
### Reducing farmer dependency on fungicides
Farmers battling late blight typically resort to frequent fungicide applications—sometimes as many as six times per month—in humid environments like Zimbabwe and Peru’s Andes. These inputs represent 10 to 25% of total farm costs, eroding thin profit margins and posing health and environmental risks.
By introducing blight-resistant varieties such as CIP-Asiryq, the need for fungicide spraying diminishes significantly, reducing costs and exposure risks. This shift not only enhances household incomes but also contributes to sustainable farming practices critical for environmental stewardship.
### Empowering women and youth in Zimbabwean potato farming
The adoption of disease-resistant potatoes dovetails with Zimbabwe’s NDS1 goals to create inclusive agricultural value chains that empower women and young farmers. Women often manage smallholder fields and are integral to marketing and processing potatoes. With more stable yields, less crop loss, and new processing avenues generated by varieties like CIP-Asiryq, these stakeholders stand to gain enhanced food security and income opportunities.
Zimbabwean farmer Mrs. Chipo Dube, who cultivates potatoes in the Mashonaland East province, expressed optimism: “Late blight has destroyed my harvests many times. If a variety comes that needs fewer sprays and still grows well, it will change lives, especially for women like me who depend on farming.”
### Scaling impact through collaboration and policy
The success of CIP-Asiryq underscores the importance of synergy between scientists, genebanks, local communities, and governments. Zimbabwe’s Ministry of Lands, Agriculture, Fisheries, Water and Rural Resettlement could collaborate with institutions like CIP and the Crop Trust to introduce resistant varieties tailored to local agro-ecological zones.
Moreover, engagement with the International Treaty for Plant Genetic Resources for Food and Agriculture facilitates access and exchange of genetic materials, enabling Zimbabwe and other countries to breed and disseminate blight-resistant potatoes within equitable benefit-sharing frameworks.
### A contribution to climate resilience and food security
Late blight’s intensification under climate change is a pressing threat across sub-Saharan Africa. By adopting innovative, disease-resistant varieties like CIP-Asiryq, Zimbabwean farmers can mitigate risk, boost productivity, and secure livelihoods against the mounting impacts of a changing climate.
This progress aligns closely with global climate goals framed during international forums such as the COP30 UN Climate Change Conference, emphasising resilient food systems and biodiversity conservation.
### FFA Explainer box: What is Late Blight?
Late blight is a fungal-like disease caused by the pathogen *Phytophthora infestans*. It spreads rapidly, particularly in wet and cool conditions, causing dark lesions on potato leaves, stems, and tubers. The disease can destroy entire crops within days, leading to significant economic losses and food insecurity.
### Conclusion
The CIP-Asiryq potato represents more than just a new crop variety; it embodies hope and resilience for farmers confronting the triple challenges of plant disease, climate change, and economic hardship. Zimbabwe stands to benefit greatly from applying this innovation within its borders, harmonising with national development priorities that foster sustainable, inclusive agricultural growth. By supporting the dissemination and local adaptation of disease-resistant potatoes, Zimbabwe can reinforce its food security, uplift its rural communities, and pave the way toward a more prosperous agricultural future.
About The Author
