As international demand for ube continues to accelerate, agricultural researchers are pushing for a major transformation in how the Philippines cultivates its signature purple yam. In Bohol, the country's leading ube-producing province, farmers are now being introduced to science-driven farming practices designed to increase production, expand planting opportunities, and address longstanding supply constraints.
Despite Bohol's status as the nation's ube capital, growers continue to face two persistent obstacles: limited planting materials and the crop's natural growing cycle. Traditionally, ube is planted only during the May to June season, restricting annual production capacity and making it difficult for farmers to respond to growing market demand.
Researchers from the Philippine Root Crop Research and Training Center (PhilRootcrops) of Visayas State University are working to change that reality. Their studies identified five purple yam varieties capable of being cultivated beyond the conventional planting window. These include Ubi Kinampay, widely regarded as the Queen of Philippine Yams, along with Zambal, Baligonhon, Inoringnon, and Kabus-ok.
One of the most significant breakthroughs involves overcoming ube's dormancy period. Through specialized germination and propagation techniques, researchers have successfully demonstrated February planting, allowing farmers to establish crops months ahead of the traditional schedule. Expanding the planting calendar could help stabilize production and reduce seasonal limitations that have long constrained the industry.
Increasing yield is equally critical. Data from the Philippine Statistics Authority shows that national ube production declined sharply from more than 30,000 metric tons in 2006 to just 14,000 metric tons in 2020. To reverse that trend, PhilRootcrops is training farmers to use the minisett propagation technique, a method first developed in Nigeria.
The approach involves dividing a mother yam tuber into smaller planting sections, maximizing the number of viable propagules that can be produced from a single harvest. Under conventional methods, one kilogram of ube generates only seven to ten planting materials. With the minisett technique, that figure rises to more than thirty. The difference is comparable to turning a single seed packet into several, allowing farmers to expand cultivation without proportionally increasing costs.
Researchers are also preparing to introduce tissue culture technology. This laboratory-based process grows plant material from tiny tissue samples under carefully controlled conditions. Before being transferred to farms, the plantlets undergo incubation and hardening stages to ensure they can survive in field environments. The technology has the potential to provide a reliable supply of healthy, disease-free planting materials at scale.
These initiatives form part of the project Enhancement of Ubi Production through Trials and Demonstrations of S&T-Based Farm Practices to Support Industry Development in Bohol. The program is implemented in partnership with Bohol Island State University and supported by funding from the Department of Science and Technology's Philippine Council for Agriculture and Aquatic Resources Research and Development.
The urgency behind these efforts is underscored by the rapid rise of ube's popularity overseas. According to food and beverage analytics firm Datassential, ube menu offerings in the United States have surged by 230 percent over the past four years, while awareness of the crop now reaches one in four American consumers. On social media, hundreds of thousands of posts featuring ube further highlight its growing international appeal.
For the Philippines to maintain its position as the primary source of authentic ube, production must evolve beyond traditional practices. Researchers argue that stronger adoption of science and technology-based farming methods will be essential to improving yields, ensuring a stable supply, and helping farmers capitalize on expanding global demand.
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