Combatting the rice Delphacid: Current strategies and future directions in Texas rice

The rice delphacid (RD) [Tagosodes orizicolus (Müir)], a significant pest in Latin America and the Caribbean, emerged as a threat to Texas rice in 2015. This pest, resembling a leafhopper, extracts plant sap, leading to hopperburn and potentially transmitting the rice hoja blanca virus (RHBV). RHBV infection results in hoja blanca disease, characterized by stunted growth, chlorosis, and decreased seed production. Effective management of RD is crucial for sustaining rice yields. Current strategies include regular monitoring, timely insecticide applications, and cultural practices aimed at minimizing pest impact. In 2024, a comprehensive RD monitoring survey was conducted, involving the collaboration of extension agents, crop consultants, and growers. By sampling rice fields and adjacent fallow areas across the Texas rice belt, this survey aims to provide detailed insights into the pest's occurrence and distribution. To study varietal resistance, a colony of RD was established at Beaumont research center, sourced from RD infested fields. Different Texas rice varieties were screened for preference by RD feeding and oviposition activities. Outcomes from this research will provide growers with data on rice variety susceptibility of RD. The gathered data from this project will inform and refine management strategies, enhancing their effectiveness to mitigate the impact of RD on Texas rice production.