What medicine is effective for plum blossom scale insects
Today's small experience sharing: an introduction to the related green plants and flowers that are effective against plum blossom scale insects, and the following editor will provide you with detailed answers.
What medicine is effective for plum blossom scale insects
The symptoms of plum blossom scale insects are mainly manifested by the black sooty mycelium that covers the leaf surface and branches of the plum blossoms, which can become thick enough to weaken the tree, causing branches to wither or the entire plant to die. Plum blossom scale insects can be treated, and 0.5% Bordeaux mixture can be sprayed for prevention and control. Additionally, spraying 80% dichlorvos at a dilution of 1500 times is also quite effective.
Symptoms of plum blossom scale insects
The symptoms of plum blossom scale insects are mainly characterized by black sooty mycelium covering the leaf surface and branches after leaves and tender branches are infected; in severe cases, a thick layer can be wiped off with hands.
Plum blossom scale insect damageThe nymphs and adult females of the scale insects on plum trees densely absorb sap from the branches, which can severely weaken the tree, causing branches to wither or the entire plant to die. They are also the main vectors for the spread of scab disease.
Causes of plum blossom scale insects
The main causes of plum blossom scale insects are due to light and sunlight intensity. Different scale insects have different responses to light. Species from the Eriococcidae, Coccidae, and Lecanodiaspididae families show positive phototropism, while those living underground in the Eulecanium genus show negative phototropism. Wind also has some auxiliary effects on the spread of scale insects.
What medicine is effective for plum blossom scale insects
Plum blossom scale insects can be treated. They can be controlled by spraying 0.5% Bordeaux mixture; and spraying 80% dichlorvos at a dilution of 1500 times is also quite effective.
Methods for preventing and controlling plum blossom scale insects
Methods for dealing with scale insectsScale insects should be removed promptly by clearing diseased leaves and dead branches and destroying them in a concentrated manner to reduce the pathogen source; 50% carbendazim or methylethylthiazole can be sprayed at a dilution of 500-800 times for prevention and control; insecticides can also be sprayed, but avoid using "Lugol" or dichlorvos, as these can cause defoliation; manual capture, placement of natural enemies, and毒饵诱杀 can also be used.
Prevention measures for scale insects1. Strengthen management and enhance tree vitality. In winter, cut off diseased and dead branches, burn them in a concentrated manner, and spray lime sulfur mixture for protection.
2. When insect holes or fresh insect feces are found on the trunk and branches, cotton soaked in 80% dichlorvos emulsion at a dilution of 100 times can be inserted into the fresh insect holes, and then sealed with clay to fumigate and kill the insects.
3. For pathogenic gummosis, pay attention to scraping off the diseased bark, applying protective agents to the wounds, or scraping off the gum blocks before flowering and applying a mixture of 50 grams of 50% thiabendazole and 250 grams of 50% sulfur suspension.
4. During the growing period, spray 50% carbendazim wettable powder at a dilution of 800 times or 50% mixed thiocarbamate suspension at a dilution of 500 times. Spray once every 15 days, for a total of 3-4 times.
The detailed explanation of what medicine is effective for plum blossom scale insects provided above, hoping this article can bring you help in green plant management!