What precautions should be taken when using laundry detergent to control aphids?
What should be noted when using laundry detergent to control aphids? When is the best time to apply it? Experienced readers are also asked to share their advice. Nowadays, pollution-free food is popular, so many gardeners have turned to laundry detergent for aphid control, such as using synthetic laundry detergent to control aphids on fruit trees. It is safe, non-toxic and economical, making it the first choice for aphid control...
What should be noted when using laundry detergent to control aphids? When is the best time to apply it? Experienced readers are also asked to share their advice.Nowadays, pollution-free food is popular, so many gardeners have turned to laundry detergent for aphid control, such as using synthetic laundry detergent to control aphids on fruit trees. It is safe, non-toxic and economical, making it the first choice for aphid control. Therefore, Zhongdi Network has compiled the precautions for using laundry detergent to control aphids, listed in detail below for readers' reference.
Note 1. How to use laundry detergent to control aphids:
The laundry detergent must be fully dissolved in an appropriate amount of boiling water, stirred evenly, and then the required amount of water added before spraying. If cold water is used to mix the laundry detergent and then sprayed, some granules will not dissolve; once they adhere to the plant leaves, necrotic spots will appear within 3-5 days. In severe cases, the entire leaf is scorched, and the leaves may even drop off.
Note 2. Concentration of laundry detergent for aphid control:
When controlling green peach aphids, pear aphids and apple aphids, 0.5 kg of laundry detergent must be diluted with 400 kg of water; for aphids on cowpea, 0.5 kg of laundry detergent must be diluted with 500 kg of water. Too high a concentration easily causes plant damage, while too low a concentration fails to control aphids.
Note 3. Timing of laundry detergent application for aphid control:
When spraying, it is best to do so at high temperature around noon on a sunny day, and be sure to spray onto the surface of the aphids' bodies; the insecticidal effect can reach more than 95%.
Note 4. Spraying positions for laundry detergent:
Because aphids generally cluster on the undersides of leaves and tender tips, spraying should focus on these key positions and be even, so that the laundry detergent liquid forms a film on the insects' bodies, blocking the aphids' spiracles and killing them.
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