Pests of Prunus armeniaca and their control methods

Pests of elmleaf plum: aphids

symptom

The damage occurs on young leaves, with minor damage affecting the growth of the plant. In severe cases, the plant will wither, a large number of leaves will die, and finally the entire plant will die.

Prevention and treatment methods

If a large number of aphids are found causing harm, chemical control should be carried out immediately.

Use the ratio of 1:10 to soak tobacco leaves in water, and spray the whole plant once after soaking for about 5 hours.

Aphids can be killed with 1500 times diluted aphid remover, or a solution of laundry detergent, urea and water in a ratio of 1:3:300 can be prepared and sprayed on the entire plant. About 2-3 times.

Or spray once with 900 times diluted 12% oxydemeton-methyl emulsion or 1100-1600 times diluted malathion emulsion, or spray once with 900 times diluted DDT emulsion or 14000-19000 times diluted granules of 70% imidacloprid.

Pests of Prunus mume: Red spider mites

symptom

Red spider mites reproduce quickly in weeds, plant branches and other environments. They harm the entire plant, and several generations may mix on the plant and harm it at the same time. When the damage is serious, the entire plant will die.

Prevention and treatment methods

Mix sulfur + salt + water (ratio 10:1:1:40) evenly and then use it. Applying "white" can prevent mature larvae from climbing down trees and overwintering in shallow soil layers, and can also prevent the larvae of camphor bush borer from climbing up trees in spring.

1500 times diluted 40% dicofol emulsifiable concentrate can kill red spider mites.

Pests of Prunus mume: Psoralea corylifolia

symptom

The adult moth emerges in the afternoon, and the male moths prefer to be active in the evening or early morning.

The larvae usually feed on the egg shells in the afternoon 1-2 days after hatching, then climb onto branches or leaves or float to nearby branches and leaves, spin silk to stick to broken leaves to build a protective sac and begin to feed.

The larvae in the protective sacs bite leaves, tender shoots, or peel the bark of branches and fruits, which may cause the complete loss of branches and leaves in some areas and lead to the death of the plant.

Prevention and treatment methods

When the number is small, they can be killed manually and burned in batches.

When insect pests occur severely, spray 2050 times diluted pyrethroid, 900 times diluted 85% DDT emulsifiable concentrate, or 1500 times diluted 80% trichlorfon crystals during the larval stage.