How to treat cucumbers for spider mites with ammonia? - briefly
Mix a 5 % ammonia solution with water at a 1:10 ratio and thoroughly spray the cucumber leaves, repeating the application every 5–7 days until spider mites are gone. Apply early, keep the spray off fruit, and wear gloves for safety.
How to treat cucumbers for spider mites with ammonia? - in detail
Ammonia can be an effective control agent for spider mite infestations on cucumber plants when applied correctly. The following points outline the necessary preparation, application, and safety measures.
Prepare a solution with a concentration of 1–2 % ammonia (approximately 10–20 ml household ammonia per liter of water). Higher concentrations risk phytotoxicity, while lower levels may not suppress the pest. Mix thoroughly and allow the solution to sit for a few minutes to ensure even distribution.
Apply the mixture to the foliage using a fine‑mist sprayer. Target both the upper and lower leaf surfaces, where spider mites lay eggs and feed. Ensure thorough coverage, especially in dense canopies. Spray during the early morning or late afternoon to minimize leaf burn from sunlight.
Repeat treatments every 5–7 days until mite populations decline. Monitor plants after each application; if leaf discoloration or wilting appears, dilute the solution further or reduce the frequency. Combine ammonia applications with cultural practices such as removing heavily infested leaves and maintaining optimal humidity, which discourages mite reproduction.
Safety considerations include wearing gloves, goggles, and a mask to avoid inhalation and skin contact. Conduct a small test on a single leaf before full‑plant treatment to confirm tolerance. Keep the solution away from edible fruit; wash cucumbers thoroughly before consumption if any residue is suspected.
Proper ventilation, accurate mixing, and consistent re‑application are essential for successful mite management using ammonia on cucumber crops.