Scientific name: Agriotes spp .; A. lineatus and A. sputator, Elater sp., Lacon murinus
State Size - Features
Larva 18-20 mm - Cylindrical and elongated from orange to bright brown. It has three thoracic legs and its body is very hard.
Adult - 7-12 mm Ogive shape, elliptical and brown to black.
There are several species of wireworms and all have similar characteristics, so for practical purposes it is not necessary to distinguish them.
1 every 4 or 5 years.
Symptoms / Damage
They destroy seeds, they practice galleries in tubers, they destroy the roots and the stem in seedlings.
The crops that can be used by their underground organs (potatoes, beets, carrots) suffer a total commercial depreciation.
Damage to plants such as tomatoes translates into widespread decay, lack of vigor and finally production is reduced.
If the presence of larvae is observed or if there were damages the previous season, the recommended treatment is based on chlorpyrifos or ethoprofos, applied in granules or in irrigation water. Etoprofos has a greater efficacy although it is not authorized in some crops such as carrot for example.
When doing this treatment you are also fighting other soil insects such as white worms or nematodes.
In otato, the seed can also be treated at the same time of sowing (with specific machinery) with imidacloprid.
In seeds of cotton, corn, or beet, intended for planting or planting, you can do the same but applying thiamethoxam.
- Cultural measures
A method of capture consists of filling a container (cut bottles, small pots, etc.) to which previously holes have been made, with cereal grains such as corn or wheat mixed with a substrate. They are left in the plot on the ground and every 10 days they are removed, counting the number of captures.
The larvae are sensitive to drought so they always look for areas of more humidity. In summer it is advisable to give a job to the land to expose the insect to the surface, especially in the most humid areas of the plot.