These are the raspberry bushes I've been spraying as a test of Japanese Beetle control.
The quick history:
The attached photo is indicative of the initial infestation as of July 31.
July 31 -- a test spray with a hand sprayer on three 20-foot sections, (strength 4 tablespoons in 2 gallons of water). By next day, most but not all beetles had left those sections and congregated elsewhere.
So when the 5 gal. of soap arrived, I made a 1:250 solution (12 ounces in my 25-gal John Deere sprayer) and drenched the entire 150 feet of bushes, both rows, on August 23 and again a week later, Aug. 30.
As of today, Sep. 9, after two rains in the past week, we picked several pounds of raspberries and found only three beetles. One was wandering across a leaf, one was feeding on a leaf and one feeding on a berry.
The owners had also observed "the bugs are gone."
When we picked raspberries today, the bushes were humming with honeybees and bumblebees.
Each bearing branch has dozens of berries coming on.
The lady in the photo is Kris, who with her husband Tim operate a country place in a restored barn where hundreds of women congregate during the summer... "Barn Happy." Antiques, lunches, crafts, and social life, plus fresh local produce in season. She was picking there today and hadn't seen any bugs, except for the honeybees.
Yes, she's delighted with the fact they have a crop to sell. Last year it was ruined by small black beetles. This year, the attack was from Japanese beetles... but now they're gone.
Raspberry species include: Rubus arcticus (Arctic Raspberry) Rubus crataegifolius (Korean Raspberry) Rubus idaeus (European Red Raspberry) Rubus leucodermis (Whitebark or Western Raspberry, native: Blue Raspberry) Rubus occidentalis (Black Raspberry) Rubus odoratus (Flowering Raspberry) Rubus phoenicolasius (Wine Raspberry or Wineberry) Rubus strigosus (American Red Raspberry) (syn. R. idaeus var. strigosus) Red, early summer fruiting 'Boyne' 'Fertodi Venus' 'Rubin Bulgarski' 'Cascade Dawn' 'Glen Clova' 'Glen Moy' 'Killarney' 'Malahat' 'Malling Exploit' 'Titan' 'Willamette' Red, mid summer 'Cuthbert' 'Lloyd George' 'Meeker' 'Newburgh' 'Ripley' 'Skeena' Red, late summer 'Cascade Delight' 'Coho' 'Fertodi Rubina' 'Glen Prosen' 'Malling Leo' 'Octavia' 'Schoenemann' 'Tulameen' Red, primocane, fall, autumn fruiting 'Amity' 'Augusta' 'Autumn Bliss' 'Caroline' 'Fertodi Kétszertermo' 'Heritage' 'Josephine' 'Ripley' 'Summit' 'Zeva Herbsternte' Gold/Yellow, primocane, fall, autumn fruiting 'Anne' 'Fallgold' 'Fertodi Aranyfürt' 'Goldenwest' 'Golden Queen' 'Honey Queen' Purple 'Brandywine' 'Royalty' Black 'Black Hawk' 'Bristol' 'Cumberland' 'Glencoe' 'Jewel' 'Munger' 'Ohio Everbearer' 'Scepter'
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