Content
Among systemic fungicides, Rex Duo received a good rating from farmers.
This drug consists of two components and is used to protect forage and cereal plants from fungal infections. The innovative solution belongs to the developers of the BASF company, who successfully selected active ingredients with mutually complementary effects.
More details about the development:
Description and properties of the drug
The necessary information about the fungicide "Rex Duo" is collected in the instructions for use.
The active components of the drug are:
- Epoxiconazole at a concentration of 18.7%. Belongs to the chemical class of triazoles. By the method of penetration it belongs to systemic pesticides, by action to fungicides, by the nature of action - to protective pesticides and curative fungicides. Blocks the formation of cell membranes of the pathogen, which leads to its death. A distinctive property is the ability of a substance to remain active during wet and cold weather. The rapid onset and duration of action is another advantage of the component.
- Thiophanate-methyl at a concentration of 31.0%. Chemical class: benzimidazoles.The method of penetration of this component classifies it as a systemic contact pesticide; its effect on organisms is much broader than that of epoxiconazole. In addition to the group of pesticides and fungicides, the substance belongs to insecticides and ovicides. By nature of action it is a protective pesticide. Stops the process of fungal cell division.
It can be seen that the mechanism of action of the components is different, so the effect of the Rex fungicide is manifested over a wide range, and the risk of resistance is significantly reduced.
The drug "Rex Duo" is produced in the form of CS - a concentrated mixture-suspension.
According to reviews from farmers, the drug is of greatest value when growing varieties of winter wheat. Even the minimum level of damage by rust, septoria and powdery mildew can lead to the loss of a quarter of the crop. Therefore, the protective effect of Rex Duo can protect crops from damage by pathogens.
Its use is justified for the protection and prevention of crops from a number of fungal infections:
- spotting;
- pyrenophorosis;
- powdery mildew;
- rust;
- septoria;
- rhynchosporiasis;
- Cercospora.
If signs of disease appear, the use of the fungicide "Rex Duo" gives a lasting positive effect.
Advantages and disadvantages of a systemic drug
Among the main advantages of the fungicide are:
- a pronounced stop effect for pathogens due to the rapid penetration of active ingredients into plant tissue;
- a high level of systematicity contributes to the protection of new plant parts;
- possibility of use in tank mixtures, but after a compatibility test;
- reliability during treatments under conditions of low temperatures and high air humidity (penetration rate of active ingredients is no more than 30 minutes);
- guaranteed protection of grains (ears) and beets (leaves);
- duration of protective action is about a month;
- rapid manifestation of the therapeutic effect of the fungicide (on the first day);
- stable effect when combined with vitamin and mineral complexes;
- the ability to use the fungicide near water bodies;
- increasing the growing season of plants;
- convenient form of release - canisters with a volume of 1 liter and 10 liters.
Among the disadvantages of the fungicide, farmers note:
- Not too budget price. A 1 liter canister costs from 2000 rubles.
- Toxicity to warm-blooded animals and humans. It is not maximum (class 3), but the use of the drug requires the mandatory use of personal protective equipment for the skin and mucous membranes. After treatment, it is possible to continue work on the site after 3 days.
Farmers do not note any other significant shortcomings.
Preparation of working solution
The mixture is prepared immediately before use. The consumption rate of the suspension is calculated depending on the area being treated and the type of crop. The species of the pathogenic fungus does not play any role and is therefore not taken into account.
The fungicide emulsion is added to half the volume of water and mixed thoroughly. Then add the rest of the water in parts. This makes it possible to evenly dissolve the substance.
To treat cereals, adhere to the ratio of 300 ml of fungicide per 1 hectare of area.When planting rapeseed, the consumption doubles (600 ml). The volume of water is calculated according to the instructions for working with the sprayer and the density of the jet output.
For cereals, one preventative treatment with a fungicide per season is sufficient. If there is a need for treatment, then spraying is permissible at any phase of plant development. In this case, the degree of damage is taken into account. The frequency of spraying is 2 weeks.
Table and fodder beets are processed twice with an interval of 14 days. In this case, the consumption of “Rex Duo” is maintained at a volume of 300 ml. Water is taken according to the power of the sprayer.
All these recommendations are covered in the instructions attached to the fungicide "Rex Duo"
Application of the drug for crops
For grains, 2 treatments with Rex Duo fungicide are recommended. For beets - one or two. The drug works great against several types of fungal infections, so it is used everywhere.
On planting areas of spring and winter wheat or barley, use per 1 sq. m from 0.04 ml to 0.06 ml of suspension. One spray is enough with a working solution flow rate of 30 ml per 1 sq. m. m.
On beet beds, the consumption is almost the same - from 0.05 ml to 0.06 ml. Carry out two sprayings with an interval of 14 days. A second treatment will be needed when signs of damage appear. In some cases, one preventive measure is enough. For 1 sq. m area consume from 20 ml to 40 ml of solution.
Safety regulations
The fungicide is not toxic to bees and fish, but humans must be especially careful. It is necessary to protect the respiratory organs, skin and eyes from exposure to the chemical as much as possible.In case of direct contact, immediately take adsorbent preparations and wash the skin.
The substance should not be used after the expiration date (3 years); failure to comply with this rule leads to increased toxicity.
The packaging is disposed of separately from household waste.
The containers in which the solution was prepared are thoroughly washed and stored out of the reach of children and animals.
Types of the drug
The developers have provided farmers with a new drug with enhanced action – the fungicide Rex Plus.” The active ingredients are Epoxiconazole (84%) and Fenpropimorph (25%). The first ingredient is identical to one of the active ingredients of Rex Duo, and the second enhances the absorption of epoxiconazole. It has very high mobility and rapid penetration into plant tissue. When used together, this leads to increased penetration of the first component. The developers called the synergy of the two active ingredients in Rex Plus the slippage effect. The composition also includes special adhesives and adjuvants that increase the fixation of the fungicide on the surface of plant parts. Accordingly, drug absorption improves. The fungicide is adapted for use on grain crops.
According to reviews from farmers, the Rex Plus fungicide has the following advantages:
- Low level of substance loss. Thanks to the inclusion of adhesives, the solution does not roll off the leaves.
- Increased protective effect due to uniform distribution.
- More pronounced stopping effect or therapeutic effect.
- High bioeffectiveness of the fungicide in different climate zones.
Reviews
You can learn more about the benefits of the Rex line of fungicides from the reviews.
