Key Points

  1. The USDA is directing an additional $500,000 to LSU to support research on the pasture mealybug, an invasive insect threatening Louisiana's sugarcane industry.
  2. The pasture mealybug was first confirmed in Louisiana sugarcane in 2025 and has since been documented in additional sugar-producing areas.
  3. USDA's response will focus on improving pest detection and diagnostics, accelerating research, and developing management and mitigation strategies with state officials.

The Threat of the Pasture Mealybug

The pasture mealybug is an invasive insect that has emerged as a serious concern for Louisiana's sugarcane industry. First confirmed in 2025, the pest has since been documented in additional sugar-producing areas, causing severe yellowing and yield losses in affected fields.

USDA's rapid-response grant will support research into the pasture mealybug's specific effects on sugarcane and the extent of the threat to the state's crop. LSU researchers will work with USDA's Agricultural Research Service to develop strategies for getting rid of the pest.

At a Glance

USDA Grant$500,000
Additional funding for research on pasture mealybug
Pasture MealybugInvasive insect
Threatening Louisiana's sugarcane industry
LSU ResearchOngoing
Improving pest detection and diagnostics, accelerating research, and developing management and mitigation strategies

Behind the USDA's Rapid-Response Grant

Behind the USDA's Rapid-Response Grant

The USDA's response will focus on improving pest detection and diagnostics, accelerating research, and developing management and mitigation strategies with state officials. LSU researchers will also conduct insecticide efficacy trials in Louisiana.

USDA is designating the pasture mealybug as a priority pest for the upcoming fiscal year through its Plant Pest and Disease Management Program, which has seen its funding increased from $75 million to $90 million.

What Growers and Researchers Should Expect

What Growers and Researchers Should Expect

Growers and researchers should expect continued efforts to develop management and mitigation strategies for the pasture mealybug. Early results from the St. Martinville mill have been more encouraging than some growers anticipated, with sugar numbers so far being satisfactory.

However, the LSU AgCenter has reported that the pasture mealybug can spread through wind, storms, and contaminated equipment, emphasizing the need for continued research and vigilance.

Risk & Opportunity Assessment

Commercial RiskMediumThe pasture mealybug's impact on sugarcane yields is still under study, and continued research is needed to develop effective management and mitigation strategies.
Regulatory RiskLowUSDA's response is focused on supporting research and developing management and mitigation strategies, rather than imposing new regulations.
Reputation RiskLowThe USDA's response is seen as a positive step in addressing the pasture mealybug threat, and growers and researchers are working together to develop effective solutions.
Commercial OpportunityLowWhile the pasture mealybug poses a threat to the sugarcane industry, there are opportunities for researchers and growers to develop new management and mitigation strategies and technologies.