How should I spray currants in autumn against the bud tick? - briefly
In late autumn, coat the currant canes with a horticultural oil (such as neem or mineral oil) at a 1‑2 % dilution, fully covering buds and shoots before frost. If a systemic acaricide is preferred, apply a bud‑mite‑labeled product at the manufacturer’s rate and repeat the treatment after 10–14 days.
How should I spray currants in autumn against the bud tick? - in detail
Apply a targeted autumn spray to currant bushes to suppress the bud mite population before winter dormancy.
Select a product containing either sulfur, horticultural oil, or a licensed acaricide labeled for bud mite control on Ribes species. Verify the registration number and read the label for the maximum allowed concentration.
Timing is critical. Begin applications when buds have swollen but before they open, typically in late September to early October, depending on local climate. A second treatment can be made two weeks later if weather permits and the label allows multiple applications.
Prepare the spray solution according to label instructions, using a calibrated sprayer to ensure uniform coverage. Mix the active ingredient with water, adding the recommended amount of adjuvant (e.g., non‑ionic surfactant) to improve leaf wetting.
Apply the mixture until runoff occurs on all foliage, stems, and developing buds. Avoid spraying in windy conditions or when rain is forecast within 24 hours, as runoff reduces efficacy and increases drift risk.
After treatment, record the date, product name, rate, and weather conditions. Inspect a sample of buds two weeks later for signs of mite activity; low numbers indicate effective control.
Store any remaining concentrate in a sealed container, away from sunlight and heat, and dispose of empty containers per local regulations.
Repeat the program annually, adjusting dates based on regional phenology, to maintain low bud mite pressure and protect fruit quality.