What should be done if spider mites attack cucumbers? - briefly
Inspect leaves frequently and, at the first sign of spider mites, wash plants with a strong jet of water, then treat with a registered miticide such as neem oil or sulfur‑based spray according to label directions. Continue weekly monitoring and keep humidity low with good air circulation to prevent recurrence.
What should be done if spider mites attack cucumbers? - in detail
Spider mite infestation on cucumber vines requires rapid intervention to prevent severe leaf damage and yield loss. First, confirm the presence of mites by inspecting the undersides of leaves for tiny moving specks and fine webbing.
Next, remove heavily infested foliage. Prune affected shoots, dispose of them away from the garden, and clean tools with alcohol to avoid spreading the pests.
Apply a water spray to dislodge mites. A strong jet of water directed at the leaf undersides reduces populations by up to 70 % within minutes. Repeat daily for a week, increasing frequency during hot, dry periods.
Introduce biological controls. Release predatory mites (e.g., Phytoseiulus persimilis or Amblyseius swirskii) at a rate of 10–20 k per square meter. Ensure adequate humidity (≥60 %) and avoid broad‑spectrum insecticides that kill beneficial insects.
If populations persist, use miticidal soaps or neem oil. Mix according to label instructions, apply in the early morning or late evening to minimize leaf burn, and cover both leaf surfaces. Perform three applications at five‑day intervals, observing a two‑day pause before harvest.
Chemical acaricides are a last resort. Choose products with low toxicity to humans and pollinators, such as sulfur or spirodiclofen, and follow resistance‑management guidelines: rotate active ingredients, limit applications to three per season, and monitor for re‑infestation.
Maintain cultural practices that deter mites. Plant cucumber varieties with resistant traits, provide partial shade to reduce leaf temperature, and ensure consistent irrigation to avoid plant stress. Mulch and remove weed hosts that can harbor mites.
Regular scouting is essential. Inspect plants weekly, record mite counts, and adjust control measures promptly. Early detection combined with integrated tactics preserves plant health and maximizes cucumber production.