In early summer, DuPont registered a new nematicide in Russia - Vidat 5G! Nematicide Vidat 5 G, which contains the active ingredient oxamil, provides effective protection against a wide range of nematodes: stem, gall, cyst-forming and free-living nematodes. Oxamil, belonging to the carbamate class, has a major effect on the pest's nervous system by inhibiting the enzyme acetylcholinesterase (a chemical transmitter of impulses between nerve cells). The product is registered for use on potatoes, sugar beets, onions and carrots.
In recent years, Russian farmers have been faced with the problem of widespread nematodes.
The defeat of tubers by nematodes, or ditylenchiasis, is one of the most common diseases of potato. The causative agent of ditylenchiasis is the parasitic nematode Ditylenchus destructor, which in the literature can often be found under such names as the potato stem nematode or potato tuber nematode. This nematode is registered in almost all regions where potatoes are cultivated. In Russia, potato tuber nematode was found in most regions of the Central Federal District, the Caucasus, the Urals, and Siberia.
The nematode is a dangerous pest that is difficult to see with the naked eye.
In this regard, the initial diagnosis of the disease is difficult: as a rule, damage is detected in the later stages, when the plant has already suffered serious damage.
Harmfulness is caused by the fact that the nematode penetrates the tuber and feeds on the contents of the plant cells, as a result of which dry or wet rot of the tuber appears. With severe infection, lead-gray spots appear on the surface of the tuber, which gradually darken and acquire a dark brown color, with a characteristic metallic sheen. The affected areas, due to the enzymatic decomposition of tuber cells, shrink and crack. When bacteria or fungi penetrate, the tubers rot. Up to 80% of the affected tubers can be identified, the rest may contain a latent infection invisible during the bulkhead, which is very dangerous: during the storage period, the disease will progress, and this will lead to a significant loss of the tubers of their commercial qualities. Often, tubers affected by a nematode, laid for storage, are actively re-infected with bacterial and fungal pathogens, which subsequently leads to a complete loss of yield.
Potatoes are not the only crop affected by the nematode: sugar beets, beets, carrots and onions are also highly sensitive. In the above cultures, nematode lesions are manifested in the form of deformation of root crops, wartiness and overgrowth of roots, the formation of galls, a lag in crop growth, as well as a change in the color of the aboveground part of the plant.
Until today, the main means among the measures to control the nematode were: control of the quality of the seed, crop rotation with the selection of optimal predecessors, control of weeds (host plants for most types of nematodes), leaving the field under black steam and the selection of the most resistant varieties to nematode damage .
The stem nematode is one of the most complex malicious objects in potato growing. The biology features of this type of nematodes do not completely eradicate it in any single way, and to combat this pathogen, a whole complex of closely related measures is needed to control the spread and reproduction of the pathogen at all stages of potato production.
One of the most effective means is the introduction of nematicides into the soil. In many countries, the use of chemical nematicides has been successfully and successfully practiced for a long time.
The formulation of the new nematicide Vidat 5 G is granules. The introduction of Vidat 5 G is carried out immediately before sowing or planting crops using special equipment for the continuous introduction of granular plant protection products. This equipment allows to reduce the formation of dust and to embed the preparation to a depth of 5-10 cm, achieving an even distribution. Row application simultaneously with sowing or planting crops is carried out using precision seeders equipped with a micro-granulator; potato planters equipped with a kit for the introduction of granular preparations, or other similar equipment.
The effectiveness of Vidat 5 G is independent of weather conditions, the nematicide has a high systemic effect: it is absorbed by the roots and protects from leaf and stem nematodes. In the soil prevents the penetration of nematodes into the roots in the early, most vulnerable period of plant development. Nematicide provides long-term protection of the culture for 6-8 weeks after application, and also prevents the transmission of viruses to protected plants.
To date, the distribution and harmfulness of nematodes has not been fully addressed, which poses a hidden threat to agricultural producers. With the advent of the nematicide Vidat 5 G on the market, it became possible to take this problem under reliable control.