Grape Pest Survey- 2nd and 3rd Week of May

— Written By and last updated by

As we approach the 3rd week of May, the plants continue to fill in, and some fields have started to blossom. Numbers of the leafhopper Graphocephala versuta – a vector of Pierce’s Disease – are starting to increase in some vineyards, and we caught our first Oncometopia orbona, broad-headed sharpshooter, at sites in the Northeast, Northwest and Southeast. See our first scouting report for our previous findings.

We have no captures of the three-cornered alfalfa hopper on the traps, but as the other host crops like peanuts and soybean are being planted around our locations, we are likely to start seeing them soon.

Southwest 1 Field (Muscadine grapes, Rowan Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
2nd week of May 0 0 0 0.7 0
3rd week of May 0 0 0 0.2 0
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
2nd week of May 0 0 0 0
3rd week of May 0.2◊ 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

◊ suspected GBM

Northwest 1 Field (Vinifera grapes, Wilkes Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
2nd week of May 0 0 0 21.6 0.3
3rd week of May 0 0 0 8.2 0.7
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
2nd week of May 0 0 0 0
3rd week of May 0 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northwest 2 Field (Vinifera grapes, Surry Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
2nd week of May 0 0 0 4.5 0
3rd week of May 0 0 0 0.3 0
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
2nd week of May 0 0 0 0
3rd week of May 0 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Northeast Field 1 (Muscadine grapes, Perquimans Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
2nd week of May 0 0 0 2.3 0
3rd week of May 0 0 0 0.5 0.2
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
2nd week of May 0 0 0 0
3rd week of May 0 0 0 0

Northeast Field 2 (Vinifera grapes, Currituck Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
2nd week of May 0 0 0 0.2 0.5
3rd week of May 0 0 0 0 0.5
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
2nd week of May 0 0 0 0
3rd week of May 0.2◊ 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 1 (Muscadine grapes, Johnston Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
3rd week of May 0 0 0 0.2 0
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
3rd week of May 0 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 2 (Muscadine grapes, New Hanover Co.)

Pierce’s Disease vectors
Week Three cornered alfalfa hopper (Grapevine red blotch associated virus vector) Glassy -winged sharpsooter∗ Phera insolita Graphocephala versuta Oncometopia orbona∗
3rd week of May 0 0 0 0 0
Week Average N° GBM/trap N° Spotted lanterfly eggs♦ N° Spotted lanterfly nymphs♦ N° Spotted lanterfly adults♦
3rd week of May 0 0 0 0

∗ Average number per sticky trap

 Number  of Spotted Lanternfly per 2 transects of 100 mt