Grape Pest Survey 5th Week of May

— Written By

Our last site in the southwest of the state has been added to the pest survey this week in Rowan County. Now we have the 8 field sites throughout the state.

The Grape berry moth (GBM) continues to show up in very low numbers in some vineyards as the berries start to grow.

GBM capture in pheromone trap. Wilkes Co.

GBM capture in pheromone trap. Wilkes Co.

The Broaded-head sharpshooter and the leafhopper Graphocephala versuta, both Pierce’s disease vectors are in higher numbers in Wilkes Co. but are still in low numbers at other sites.

For our previous scouting report, check out Grape Pest Survey 4th Week of May.

Southwest Field 1

Rowan County (Muscadine grapes)
15 April 22 April 29  May 7 May 14 May 20 May 30 May
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 3
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0
Phera insolita 0 0 0 0 0 0 0
Graphocephala versuta 0.3 0.2 0.2 0.7 0.2 0.2 0.2
Oncometopia orbona∗ 0 0 0 0 0 0 0.2
Grape berry moth 0 0 0 0 0.2 0 0.3
Spotted lanternfly eggs 0 0 0 0 0 0 0
Spotted lanternfly nymphs 0 0 0 0 0 0 0
Spotted lanternfly adults 0 0 0 0 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Southwest Field 2

 Rowan County (Muscadine grapes)
30 May
Three cornered alfalfa hopper (sticky traps) 0.2
Three cornered alfalfa hopper (within field) 0
Three cornered alfalfa hopper (field edge) 0
Glassy -winged sharpsooter∗ 0
Phera insolita 0
Graphocephala versuta 0.7
Oncometopia orbona∗ 0.5
Grape berry moth 0.1
Spotted lanternfly eggs♦ 0
Spotted lanternfly nymphs♦ 0
Spotted lanternfly adults♦ 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northwest  Field 1

Wilkes County (Vinifera grapes)
18 April 26 April 1  May 7 May 13 May 21 May 29 May
Three cornered alfalfa hopper (sticky traps) 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0
Phera insolita 0 0 0 0 0 0 0
Graphocephala versuta 0.2 3.3 8 21.6 8.2 19 26.7
Oncometopia orbona∗ 0 0 0 0.3 0.7 0.3 1.5
Grape berry moth 0 0 0 0 0 0 0.7
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northwest  Field 2

Surry County (Vinifera grapes)
18 April 26 April 1  May 7 May 13 May 21 May 29 May
Three cornered alfalfa hopper (sticky traps) 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0
Phera insolita 0 0 0 0 0 0 0
Graphocephala versuta 0.5 0.3 1.2 4.5 0.3 0.3 1
Oncometopia orbona∗ 0 0 0 0 0 0.3 0.2
Grape berry moth 0 0 0 0 0 0 0.1
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northeast  Field 1

Perquimans County (Muscadine                             grapes)
8 May 15 May 22 May 28 May
Three cornered alfalfa hopper (sticky traps) 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 1 1
Three cornered alfalfa hopper (field edge) 0 0 0 0
Glassy -winged sharpsooter∗ 0 0 0 0
Phera insolita 0 0 0 0
Graphocephala versuta 2.3 0.5 0.3 4.2
Oncometopia orbona∗ 0 0.2 0.7 0
Grape berry moth 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northeast  Field 2

Currituck County (Vinifera grapes)
8 May 15 May 22 May 28 May
Three cornered alfalfa hopper (sticky traps) 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0
Glassy -winged sharpsooter∗ 0 0 0 0
Phera insolita 0 0 0 0
Graphocephala versuta 0.2 0 0 0
Oncometopia orbona∗ 0.5 0.5 0.2 1
Grape berry moth 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 1

 Johnston County (Muscadine grapes)
16 May 23 May 30 May
Three cornered alfalfa hopper (sticky traps) 0 0 0
Three cornered alfalfa hopper (within field) 0 0 2
Three cornered alfalfa hopper (field edge) 0 0 0
Glassy -winged sharpshooter∗ 0 0 0
Phera insolita 0 0 0
Graphocephala versuta 0.2 0 0
Oncometopia orbona∗ 0 0.2 0.2
Grape berry moth 0 0 0
Spotted lanternfly eggs♦ 0 0 0
Spotted lanternfly nymphs♦ 0 0 0
Spotted lanternfly adults♦ 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 2

 New Hanover County (Muscadine grapes)
16 May 23 May 30 May
Three cornered alfalfa hopper (sticky traps) 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0
Three cornered alfalfa hopper (field edge) 0 3 1
Glassy -winged sharpshooter∗ 0 0 0
Phera insolita 0 0 0
Graphocephala versuta 0 0 0
Oncometopia orbona∗ 0 0 0
Grape berry moth 0 0 0
Spotted lanternfly eggs 0 0 0
Spotted lanternfly nymphs♦ 0 0 0
Spotted lanternfly adults♦ 0 0 0

∗ Average number per trap

 Number  of Spotted Lanternfly per 2 transects of 100 m