1. AphidsSymptoms: This insect mostly appears in summer. It will suck the juice inside the plant, and then the plant will wither due to lack of nutrition. After being attacked by it, there will be dead spots on the leaves. 1. Drug control: When aphids are found on the plants, they should be sprayed with drugs as soon as possible. You can use Marathon emulsion, cypermethrin emulsion or imidacloprid water solution. You can also make your own laundry detergent water spray by mixing laundry detergent, urea and water, and use it 2-3 times. 2. Artificial control: As soon as the insects appear, the damaged branches and leaves should be cut off and burned. When the plant is dormant, clean up the fallen leaves to prevent insect eggs. If the amount is small, just brush it off with a soft-bristled brush. 2. Scale InsectsSymptoms: It harms the leaves, twigs and young shoots of the plant, initially with yellow spots that then turn yellow and wither. If there are too many insects, the entire plant may die due to sooty mold. Prevention and control work: When it occurs, you must immediately buy pesticides. No matter how many insects there are, you can use oxydemeton-methyl emulsifiable concentrate, chlorpyrifos emulsifiable concentrate and dichlorvos. Use them for about 3 times. It is best to alternate the spraying of the pesticides, which can have a good insecticidal effect. |
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