How should cucumbers be treated against spider mites? - briefly
Apply a targeted spray of horticultural oil or neem oil early in the infestation, covering foliage thoroughly and repeating every 7‑10 days until mites disappear. Rotate with a mild insecticidal soap if oil resistance appears, and maintain low humidity and adequate air flow to discourage reinfestation.
How should cucumbers be treated against spider mites? - in detail
Cucumber cultivation requires proactive measures when spider mite populations appear. Early detection through regular leaf inspection prevents rapid damage. Leaf discoloration, fine webbing, and tiny moving specks indicate infestation.
Cultural controls reduce habitat suitability. Remove weeds and plant debris that shelter mites. Maintain adequate spacing to improve air circulation and lower leaf temperature. Water plants at the soil base rather than overhead to keep foliage dry, limiting mite reproduction.
Biological options rely on natural predators. Release predatory mites such as Phytoseiulus persimilis or Neoseiulus californicus at a rate of 10–15 mites per square meter. Introduce lacewings and lady beetles to supplement predation. Ensure pesticide applications do not harm these beneficial insects.
Chemical interventions are reserved for severe outbreaks. Select products labeled for cucumber and spider mite control, preferably those containing spirotetramat, abamectin, or sulfur. Apply according to label‑specified intervals, typically every 7‑10 days, and rotate active ingredients to avoid resistance. Use the lowest effective concentration and spray until both leaf surfaces are wet.
Integrated pest management (IPM) combines the above tactics. Begin with cultural practices, monitor populations, augment with biological agents, and resort to chemicals only when thresholds (e.g., >5 mites per leaf) are exceeded. Record observations and treatment dates to refine future actions.