1. Pecan Weevil Update Sherry Sanderson Chief
Entomology and Nursery Industries Bureau
New Mexico Department of Agriculture

2. Biology 2-3 year life cycle
Adult emerges, feeds and lays egg in gel stage of pecan nut
Larvae feed on the pecan nutlet
Larvae drills a hole in pecan nut and drop to the ground
Larvae tunnels 12” to 24” inches into soil

3. American Hickory
Hosts
Pecan

4. Location
Pecan Weevil is found from New York to Iowa to Oklahoma, and across the southeastern states. In Texas, the weevil is found in 131 counties.

5. Eradication Efforts Emergence Monitoring Insecticide Applications
Cold Treatment
Cleaning Plant Inspections
Import Inspections

6. Emergence Monitoring Counties monitored
Dona Ana, Luna, Otero
Emergence traps placed in orchards and yard
Determine adult emergence
Nutlet monitoring
Sampled to determine stage
Applications were started during water stage – prior to gel stage or upon weevil capture

7. Insecticide Applications
Prior to gel stage
Labeled rates of Fury® and/or Sevin XLR®
Applications
July/August-September
Every 7-10 days
Owner responsible for spraying
Contractor hired

8. Trapping Results 2003 Trapped 7 pecan weevils in infested areas
6 weevils in Dona Ana County
1 weevil in Otero County
Pecan nuts found by inspectors with pecan weevil larvae exit hole
0 nuts in Dona Ana County orchard
0 nuts in Luna County backyard
0 nuts in Otero County orchard

9. Cleaning Plant Inspections
Hired 4 temporary inspectors
Areas inspected (# of cleaning plants inspected)
Pecos Valley - 15
Otero County - 7
Mesilla Valley
North Valley - 14
South Valley - 20
Luna County - 2
Sierra County - 1
Cleaning plants inspected twice weekly
November, 2002 to February, 2003
Inspected trash piles, seconds, etc.

10. Harvest Pecans at infested orchards Cleaned at one facility
Cold treatment
7 days (168 hrs) at 0 degrees F
Cleaning Trash
Subjected to cold treatment prior to disposal
Custom Harvesting
Monitored all movement and cleaning of equipment

11. House Survey Deming (houses in a 10 block (E-W & N-S)
42 houses with pecan trees inspected – No evidence of pecan weevil
Tularosa and Alamogordo
Inspector randomly inspected pecan trees in Tularosa and Alamogordo area - No evidence of pecan weevil

12. Imported Pecans Interstate/Intrastate International Master Permits
Alabama
Texas
Random checks of retail areas
inspections - 67
International
Compliance agreements with importers
Check all certifications
Trash disposal requirements
Inspect loads

13. What Next Otero County Dona Ana County 1 weevil captured
Spray – 2 more years
Dona Ana County
6 weevil captured

14. Acknowledgements Western Pecan Growers Association Pecan Task Force
New Mexico State University
Otero County Pecan Growers Association
Otero County Cooperative Extension Service
Texas Agricultural Extension Service, Bill Ree
Agriliance
Rose Garcia, Juan Gamon, Bill Guthrie, Barbara Sharpe
NMDA staff