PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST
Cucumber Mosaic Virus on Cucumber
Cucumber mosaic virus
- If possible, remove host weeds but the host range for CMV is over 1200 species.
- When possible, do not plant in previously infected areas. Common crop hosts are spinach, pepper, celery, tomato and lettuce.
- Sanitize tools and machinery. The virus is mostly aphid transmitted but can be transmitted between plant with tools.
- Try to plant in areas which do not suffer so greatly from aphids.
- Check plants approx. 7 days after planting for aphids
- Check for ants as this may be a sure sign that aphids are present
- Symptoms include: stunting of plants, narrowing, curling downwards and mottling of leaves, and distorted and greyish looking fruit
- Take action when you see 7 or more aphids per plant
- There is no known control for viruses. Control of aphids is necessary as it is the main vector for CMV.
- Remove diseased plants from the field by placing in a plastic bag before removing from the field and disposing of them. There is nothing to be gained by only removing those parts showing symptoms.
- Leave bag in direct sunlight to kill aphids.
- PPE should be worn when applying pesticides
- Rotate chemicals (change them frequently) to prevent resistance from building up in the insect population
Insecticidal soaps (Safer Soap) (Potassium Salts). 3.25fl.oz/gal
Azadirachtin (Neem) Azadirect (1.2%). 2 tsp/gal
N/A Chemical of unknown or uncertain MoA. IRAC Unclassified
Acetamiprid (Aval) (20%). 0.75 tsp/gal
IRAC4a. WHO class unavailable. Minimum spray interval 20 days. Pre harvest interval 3 days
Dimethoate (Perfekthion). 2 tsp/gal
IRAC1b. WHO Class II. Pre harvest interval 14 days
CREATED/UPDATED: 5: 04 :2014
PRODUCED BY: Plantwise
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