Derby Herbicide: instructions for use and consumption rate

Professional cultivation of barley with wheat requires regular monitoring of weed germination. Overgrown weeds threaten grain yields. Derby herbicide is used as a systemic control and for a sustainable effect. The elements present in its composition are able to eliminate broad-leaved weeds. The greatest susceptibility to the pesticide occurs in plants in active growth with 2 leaves.

Composition and formulation of Derby 175

Derby 175 is a systemic herbicide. The pesticide contains two active elements that have the same mechanism.

The pesticide contains the following active ingredients:

• florasulam 75 g/l;
• flumetsulam 100 g/l.

The chemical class of the active element is triazolpyrimidines.

The combination of 2 different molecules leads to a fairly high rate of herbicidal activity against sensitive weeds, including some resistant to 2,4-D (tenacious bedstraw, odorless chamomile, medium chickweed, field umbilical).

Herbicide is used when sowing wheat, barley. The drug is packaged in a 500-gram plastic container, presented in the form of a suspension concentrate.

Advantages and disadvantages

Pros of using Derby pesticide include the following:

1. The drug is able to have a systemic effect on broad-leaved types of weeds.
2. Fully compatible with most chemicals.
3. Destroys even those weeds that have overgrown.
4. The use of the drug does not limit the subsequent crop rotation, its consequences are absent.
5. Long application time (for cereal flag leaf to occur).
6. Compatibility with other agrochemicals at a high level.
7. Derby can be used in cool weather at temperatures over +7 degrees.
8. Resistant manifestations of hard and soft wheat, winter and spring barley are fixed.
9. Resistant to rain after 2 hours of treatment.
10. Derby belongs to the class 3 low toxicity drug.
11. Pesticide protects crops until harvest.

The drug is practically non-toxic to animals, birds. The pesticide has a restriction for use in the sanitary zone near fishery ponds.

It is forbidden to drain the herbicide into the sewers, any water bodies.

Mechanism of herbicide action

Both active elements of the pesticide are inhibitors of the biosynthesis of essential amino acids due to the inactivation of the enzyme acetolactate synthase.

The pesticide is highly effective against bedstraw even at the growth stage of more than 20 cm and the formation of 14 rings.

The rate of influence on sensitive types of weeds is high after 2 days, the final destruction is observed after 3 weeks. Signs of weed death appear after 7-21 days. The exclusion of weeds is observed 21 days after application.

The protective effect after use remains for 2-3 weeks.

Action spectrum

The spectrum of the drug's effects includes:

• grass of annual and perennial dicotyledonous type, including thistle and thistle;
• cereal weeds.

Effective control of overgrown dicotyledonous weed grass, slightly sensitive to sulfonylurea: blue cornflower, field hatchet, tenacious bedstraw, field violet.

Protection period

Derby can only control plants of susceptible weed types that have been sprayed with seedlings.

In addition, the soil effect of the pesticide on shoots of weeds that have just sprouted is short-lived - only 2-3 weeks, due to absorption of Derby by the root system.

Based on the typical composition and stage of weed emergence, weather conditions of the growing season, weeds begin to die 2-3 weeks after spraying, and a protective barrier is provided to crops before harvest.

Consumption rate of working solution

The pesticide spraying regulations are shown in the table. rate ml/ha

Treatment method and period Wheat0 ,05-0.07Applied during the growing season - from the tillering stage to the flag leaf of the plant Barley 0.05-0.07Applied during the growing season from the tillering stage to the flag leaf of the plant

Preparing the working mixture

The working mixture is prepared before use. A third of the tank is filled with clean water, the required volume of the drug is added and mixed well. After that, the liquid is added to the edge and the solution is mixed again.

Preparation of the mixture and filling the spray tank is carried out at separate sites. A typical rate for aboveground application of the mixture would be 200-400 liters per ha. The norm of the finished liquid for the aerial method is considered to be 50 liters per hectare.

Instructions for using the product

Optimal temperature for using the product: +8-25 degrees.

According to the instructions, spraying should take place when the weeds are actively growing. Susceptible weeds in the fast growing stage with 2-8 leaves are more susceptible to the treatment.

If the product is used in the last stages of formation and to eliminate much developed weeds and in case of too sparse crops, in bad weather and after treatment, then you need to take a high rate of the product.

To achieve proper herbicide action, it must be used with a well-adjusted instrument. It is recommended to use slotted sprayers, which have a medium spray pattern.

Do not spray if frost is expected. Also, the use of Derby is impossible for cereals with overseeding of clover, alfalfa and other legumes, with prolonged drought, severe disease, pests.

Precautions

Using herbicide, precautions must be taken:

1. Treatment of the site is carried out in calm weather.
2. When spraying near the greenhouse, the windows close in it.
3. When using a herbicide, you must be careful not to get the product on the skin, eye area, respiratory tract. Be sure to wear a protective suit, goggles, gloves, mask.
4. Storage of the drug indoors is prohibited, as vapors can cause damage to plants.
5. Hands and equipment are thoroughly washed after work.

Phytotoxicity

No phytotoxicity has been observed as long as regulations are followed.

Possibility of resistance

Because both active ingredients in the pesticide are microbiologically biodegradable in the soil, Derby is harmless to future crop rotation plants.

Compatibility with other products

The product can be combined with drugs that have:

• isoproturon;
• chlorotoluron;
• clodinafop-propargyl;
• phenoxaprop-P-ethyl;
• dichlorfop-methyl.

Derby can also be used together with fungicides, insecticides. But in each individual situation, especially when general application with microfertilizers is required, before preparing the mixture, it is recommended to carry out physical mixing of the agents, using a small container for the process.

As a comprehensive control of annual cereal and dicotyledonous weeds, Derby is advised to be mixed with Axial, Amistar, Folicur, Derosal.

How to store?

Storage of the pesticide must take place in accordance with the requirements of the legislation: in a dry, well-ventilated special place. Herbicide packaging must not be damaged.

Storage temperature - from -5 to +40 degrees. The shelf life of the pesticide is 2 years.

Analogues

The pesticide Veyron is isolated from analogues of the Derby herbicide.

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