The spread of Bactericera cockerelli, a psyllid that transmits the disease complex known as "punta morada," threatens 125,000 hectares of potato cultivation in Peru, according to the International Potato Center (CIP). Potential crop losses are estimated at 98,884 tons, representing US$109 million in agricultural value.
First detected in Huancabamba in 2021, the pest has spread through Cajamarca, La Libertad, Piura, and Tumbes. CIP monitoring indicates that it has also reached Áncash, with Huánuco, Junín, and Pasco potentially exposed.
The insect, measuring approximately two millimeters, has been detected above 3,300 meters. It causes leaf discoloration, stunted growth, and tuber defects. According to CIP researcher Willmer Pérez Barrera, none of Peru's more than 4,000 native potato varieties or several hundred improved cultivars can maintain yields once infected.
Affected growers face higher pest control costs, with pesticide applications exceeding the usual three treatments per season. The psyllid also threatens tomatoes, chili peppers, and other solanaceous crops.
Since 2025, FONTAGRO, IICA, INIAP, and CIP have been coordinating regional monitoring, molecular detection, and pest ...