Pilot projects developed as teaching tools for Central American farmers facing the need to suppress fruit fly pests proved so successful that, instead of just being used as demonstrations, they moved directly into import-export agreements. A major importing country accepted the results of the projects demonstrations as validation that the project areas had low pest prevalence and thus met their import standards. These agreements were the final step of a seven-year project that began in 2001, when the seven countries of Central America approached the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture for help in reducing fruit fly prevalence in their region.
Traditionally, Central American countries mainly produced crops such as coffee, banana and sugarcane. These crops are not affected by Mediterranean and other types of fruit fly pests, and thus growers never had to meet the strict export standards required for many high-value tropical crops that are fruit fly hosts.
However, since the 1990s, growers have dealt with the frustration of constantly fluctuating international market conditions and increasingly lower prices for their traditional commodities. In response, they have attempted to diversify their production and grow more high-value horticulture commodities such as tomatoes, bell peppers and papaya for export.
This created a new problem. These new crops are hosts for fruit flies, meaning that the growers would need to meet standards for exporting to countries free of such fruit fly pests. These importing countries simply would not accept fresh produce without proof that fruit flies would not accompany the shipments. This meant that investment in these new crops would remain very restricted, as long as this phytosanitary problem could not be overcome.
The Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture knew from previous experience with other fruit fly eradication and containment projects in the region that success would require more than just releasing sterile fruit flies. Such a regional project would require coordination among all stakeholders, with Central America taking a holistic approach to problem solving and establishing complementary phytosanitary policies in the region.