How to prevent scale insects from harming plants?

Scale insect is a kind of pest with strong damage to fruit trees. when it comes to the ripening season of fruits such as mango and grapefruit, scale insects are in the period of high yield. So what is the harm of scale insects? Next, I will give you an understanding of the harm of scale insects and their prevention methods.

1. Strong reproductive ability

This pest can be seen everywhere in citrus producing areas, so scale insects are their natural enemies for oranges. First of all, one of the harm of scale insects is that the reproduction ability of scale insects is very strong, not only that, but also a variety of species, often just developed a drug to kill this kind of scale insects, and a new kind of scale insects appeared.

2. Leaf damage

Scale insects in the fruit growth stage, often suck fruit juice, so as to achieve the purpose of reproduction, and some of the leaves treated by scale insects, the leaves will turn yellow, thus affecting plant photosynthesis. When the damage of scale insects is serious, it may even cause fruit trees to show symptoms of wilting.

3. Ant gnawing

In addition to the above, scale insects will leave some honeydew after spending time on fruit trees, and the honeydew left by scale insects will attract ants to nibble on honeydew. Because the ants gnawed on honeydew, the bark was gnawed down to a certain extent, which led to the disappearance of the shading effect of the tree.

So there are so many hazards of scale insects, how to prevent or even kill scale insects?

4. Avoid the spread of scale insects.

Because the body size of scale insects is relatively small, the transmission capacity of scale insects is very limited, and it is impossible to damage all the fruit trees in a large area. Therefore, as long as a small number of fruit trees are found to be damaged by scale insects, these fruit trees should be isolated to prevent further spread.

5. Spraying pesticides in time

When the scale insects are still in the nymph stage, the maximum effect can be achieved by preventing scale insects at this time. In May / June of every year, pesticides should be sprayed early to prevent the harm of scale insects. At this time, you can choose to spray pesticides: shell must kill spray, the use ratio should be 600 to 800 times. Only in this way can pests be effectively prevented.

6. Appropriate release of natural enemies of scale insects

As the saying goes: where there is cause, there must be effect. Then scale insects must also be caused by natural enemies. In nature, ladybugs like to prey on scale insects very much, so when they are concerned about farming, they can properly put some ladybugs in their fruit trees, which is also a good way to prevent scale insects. And scale insects also have a parasitic natural enemy is jumping wasps, after the discovery of insect pests can also introduce the parasitic natural enemies of scale insects to achieve the purpose of killing scale insects.