Nodule weevils: small pests of legumes

Nodule weevils: photo

Description of nodule weevils

Name: nodule weevils
Latin:Sitone

Class: Insects - Insecta
Squad: Coleoptera - Coleoptera
Family: Weevils or elephants - Curculionidae

	Habitats:	fields, steppes, vegetable gardens
	Dangerous for:	plants of the legume family
	Means of destruction:	naphthalene, Aktara, Decis, mechanical

Representatives of nodule weevils are very diverse. There are more than 100 types of them. All of them are pests of legumes. The size of the beetles is from 3 to 7 mm.

Colors may vary. Juveniles are covered with scales, adults do not have them. The color of the bugs is most often brown or gray, rarely black. They do not disdain cultivated and wild legumes.

For the most part, they have a short proboscis and well-developed wings.

The harm of nodule weevils

Representatives of nodule weevils eat seedlings. They are very fond of the young edges of the leaves. And when the first juicy greens appear, the meal begins. With warming, the process of turning continues, and perhaps even the complete destruction of the leaves.

They are champions in figure eating.

Life cycle and distribution

Life cycle.

Adults hibernate where they feed. Already at the first warming of about 3-4 degrees of heat, they wake up. The resettlement period takes 2-3 weeks depending on weather conditions.

After mating, the females begin a chaotic laying of eggs. She places them on the ground, plants and grass. When it rains, they fall into the ground.

Eggs develop within a week if the ambient temperature is above +28 degrees. When the weather is below +8, then the larvae do not appear. Some of the eggs also die due to lack of moisture.

Caterpillars penetrate the tubers, feed on the contents and actively recover. They attack the tubers in turn, moving to the roots and outer tissues. Pupation takes place in the middle of summer. A week later, young beetles appear, which massively migrate to young shoots.

There is nodule weevil in the European part of the Russian Federation. The distribution area includes:

How to detect and prevent weevil

In the spring, surveys are carried out to help determine the presence and number of weevils on the site. Prevention of the appearance of beetles are a number of procedures:

Nodule weevil.

• observe the distance between landings;
• plant at the same time if possible;
• carry out processing between rows;
• destroy weeds.

Control measures for nodule weevil

For the mass removal of nodule weevil beetles, chemicals are used. These are insecticides of neonicotinoid origin. Organophosphorus and peritroids are also suitable.

Seeds are treated with Picus. It is a systemic protectant that protects seeds and roots from various types of pests for a long time. The special formula helps the product stay on fabrics for a long time.

It is possible to use chemistry during the growing season. For this, drugs are used:

Distribution of nodule weevils

Weevil in stock.

Often nodule weevils end up in granaries or even houses. There they destroy all sorts of stocks. To get rid of the bugs in the room, you need to sort out all the stocks, throw away all the infected products.

General cleaning is carried out with a complete cleaning of all shelves and kitchen cabinets. Those products that were nearby must be subjected to heat treatment - freeze or warm.

More weevils in the apartment and ways to get rid of them in the article.

Conclusion

Nodule weevils are owners of a short and thick proboscis, as well as an indefatigable appetite. They can eat the greens of legumes, get into houses and barns. Therefore, they need to be actively combated.