Control methods of scale insects in mango

Scale insect is one of the main pests of mango, which seriously affects the yield and quality of mango and causes huge losses to the economic benefits of fruit farmers. So how to control mango scale insects? Let's take a look at the detailed introduction with the editor.

1. Harmful symptoms

Scale insects mainly harm the branches, fruits and leaves of mango, which propagate mainly by sucking plant juice, often hiding on the back of the leaves, absorbing juice, resulting in yellowing of leaves, seriously affecting photosynthesis, leading to water loss of branches and weakening of trees. At the same time, it also secretes a large amount of honeydew, which provides a breeding place for soot disease and affects the commercial value of the fruit. Scale insects like warm and humid environment, so they usually multiply in large numbers during the rainy season. When the temperature drops, they will survive the winter in withered branches and rotten leaves. When the rainy season comes, they will multiply in large numbers and continue to do harm.

2. Characteristics and habits

The main species of scale insects are coconut shield scale, wheel shield scale, Kang's powder scale, horn wax scale and so on, which are light brown, thin and transparent. The larvae are light yellowish green when they hatch, and then gradually become yellow and oval. Adults and larvae will gather in the leaves and absorb juices, causing the leaves to lose green and turn yellow, and the newly hatched larvae will crawl on the fruit and then fixed on the back of the leaves or fruit, causing flowers and fruits to fall, which will seriously lead to tree weakness. Fixing on the pericarp will also cause insect spots and secrete a large amount of honeydew and wax, leading to soot disease, resulting in low commercial value of the fruit.

3. Prevention and control methods

It is necessary to strengthen the pruning between gardens, improve the permeability of orchards, eliminate weeds in time, burn them and residual branches and leaves centrally, reduce the source of overwintering insects, and spray stone-sulfur mixture to clean the garden comprehensively, which can effectively kill pests. During the peak period of insect pests, attention should be paid to the protection and release of natural enemies. The natural enemies of scale insects are predatory ladybugs and lacewings, parasitic aphid wasps and jumping wasps. When choosing medicament prevention and control, try to choose low toxicity, and pay attention to spray evenly when spraying, so as to avoid omission.

The above is the introduction of mango scale insect control methods, hope to help you, want to know more related knowledge, please follow us.