Speaking of grubs, we are not strangers, it is a worldwide underground pest, and its adult stage is called scarab beetle, for plants, whether it is larvae or adults, it has a certain harm!
[1] Larvae and adults of grubs:
Grubs are the larvae of scarab beetles, the larvae grubs are hypertrophied, mostly white, with a brown head, a pronounced palate, a swollen abdomen, and a curved C-shaped body. (Grub body shape changes as shown below)
Adult scarab beetles are mostly ovate or oval, with gill-like antennae, hard shells, smooth surfaces, and metallic luster. (Pictured below)
[2] Harm to garden plants from larvae to adults:
1, larval stage: grubs are more difficult to treat the world's pests, mainly hidden in the soil, to nibble on the plant roots, as well as plants in contact with the soil stem mainly, the endangered plants, the root system will be seriously damaged, resulting in plant gaps, foot to the site will obviously feel soft.
2, adult insect stage: adult scarab beetles some of the plant rhizome leaves as food, will fly to the plant, omnivorous amount, plant stems, leaves, fruits are not spared, the endangered plant can obviously see the place of nibbling, serious when the leaves and thin stems may be nibbled clean.
【3】Occurrence period:
It generally overwinters in the spring to form larvae, which become pupating period from May to late June, adult stage from July to August, larval infestation period from mid-July to September, and overwintering after mid-October.
[4] How to prevent grub hazards?
1. When it occurs before or in the early stage, 2-3 kg of kilindi granules can be used per acre and watered evenly after application;
2. When it is serious, you can use 1 bottle of Qilin Qifa or 1 bottle of Guangzheng to mix with 150 kg of water per mu and spray 667 square meters evenly.