In early summer, DuPont registered a new nematicide in Russia - Vidat 5 G! The nematicide Vidat 5 G, which contains the active substance oxamil, provides effective protection against a wide range of nematodes: stem, gall, cyst-forming and free-living. Oxamil, belonging to the class of carbamates, has a major effect on the nervous system of the pest by inhibiting the enzyme acetylcholinesterase (a chemical transmitter of impulses between nerve cells). The drug 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.
The damage is caused by the fact that the nematode penetrates the tuber and feeds on the contents of plant cells, resulting in dry or wet rot of the tuber. With severe infection, lead-gray spots appear on the tuber surface, which gradually darken and acquire a dark brown color, with a characteristic metallic luster. The affected areas, due to the enzymatic decomposition of the tuber cells, dry out and crack. When bacteria or fungi enter, the tubers rot. Up to 80% of affected tubers can be detected, the rest may contain a latent infection that is invisible during the partitioning, which is very dangerous: during storage, the disease will progress, and this will lead to a significant loss of tubers of their marketability. Often, nematode-affected tubers stored for storage are actively overridden by bacterial and fungal pathogens, which subsequently leads to a complete loss of yield.
Potato is not the only culture affected by the nematode: sugar beets, table beets, carrots and onions are also very sensitive. In the above cultures, nematode lesions are manifested in the form of root crops deformity, warty and root sprawl, gall formation, culture growth lag, as well as discoloration of the aerial 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 preparative form of the new nematicide Vidat 5 G - granules. The introduction of the drug Vidat 5 G is carried out immediately before sowing or planting crops using special equipment for continuous application of granular plant protection products. This equipment allows you to reduce dust formation and seal the drug to a depth of 5-10 cm, achieving uniform distribution. Row application at the same time as sowing or planting crops is carried out using precision seeders equipped with a microgranulator; potato planters equipped with a kit for applying granular preparations, or using 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.