Latin name: Agriotes obscurus
Russian name: Dark Nutcracker
Pest Type: Multi-Pest
Row: Coleoptera – Coleoptera
It is widespread, but the most numerous in the mountainous part, especially in the western regions, as well as in the northern forest-steppe.
Larvae severely damage corn, root crops, and vegetables.
The beetle is 7–9.5 mm in size, with a wide-body, a transverse anterior back, and femoral tires not narrowed outward. The top is brownish-gray, the antennae and legs are brownish-ore. Larvae up to 28 mm in size, cylindrical, evenly colored.
Beetles winter in the ground at a depth of 50 – 80 cm. Beetles in the south of the forest zone exit at the beginning of the second decade of May, the active period continues until the end of the first decade of June.
The female lays eggs in the soil near the roots of cereal plants, prefers heavy loamy and clay soils. The larva develops, as a rule, four years, sometimes five years.
Deroceras Sturangi, Deroceras Agreste, Deroceras reticulatum
Pest Type: Pest Vegetable Indoor Crop
Type: Mollusks – Mollusca
Class: gastropods – Gastropoda
Row: Snails – Limacidae
These are polyphagous pests that damage more than 140 species of various plants, including almost all vegetable crops. These types of snails are similar to each other both in appearance and in developmental biology and lifestyle. During the day, they hide in the cracks of the soil, and at night they crawl out of the storages and feed on plants. They gnaw holes in the leaves and also damage the fruits of cucumbers and tomatoes. In places of residence, slugs leave silvery mucus, which subsequently dries up and forms a shiny path. The increased humidity of air and soil contribute to their development and mass reproduction. Slugs enter the greenhouse from the soil, as well as from weeds growing near the greenhouses.
Protective measures. Regular mowing of vegetation in moist places near greenhouses with mandatory removal of mowed plants so that they are not a repository for slugs. Spraying the soil after mowing the grass with a 10% solution of iron sulfate.