"Kvadris", fungicide: instructions for use for grapes for processing

The modern antifungal agent "Quadris" from the manufacturer "Syngenta" has established itself as an effective drug with low toxicity and long-lasting effect. The instructions for the use of the fungicide "Kvadris" for the treatment of grapes recommend the use of diseases of this and downy mildew.

Description and mechanism of action

The drug "Kvadris" is sold as a suspension concentrate, packaged in containers of 60 ml, 100 ml, 300 ml, 1 l, 5 l. The main active ingredient azoxystrobin is contained in an amount of 250 g / l.The fungicide belongs to the chemical class of strobilurins, as it is an analogue of the natural metabolites of the fungus Strobilurins Oudemansins.

In nature, this fungus lives on the cones of coniferous plants and is able to stop the growth of yeast-like and mold competitors around it. This is possible due to the property to prevent cellular respiration. Fungal cells stop receiving energy, their growth is disturbed, and sporulation stops, most species die or stop spreading.

In its action, "Kvadris" is both systemic and contact. It exhibits a long lasting protective effect and the broadest spectrum of action of any known fungicide.

Important. To exclude the development of resistance, it is necessary to alternate the use of "Kvadris" with fungicides of a different principle of action.

Instructions for use

The active substance of "Kvadrisa", azoxystrobin, is insoluble in water, which must be taken into account when working with a suspension. You can store the opened container and working fluid for a day.

The working fluid, diluted in the recommended proportion for grapes of 5 ml per 10 liters of water, must be stirred frequently during processing. In agricultural production, special equipped atomizers with agitators are used.

At home:

1. 5 ml of the suspension is poured into 1 liter of water, the tightly closed atomizer tank must be shaken vigorously for 5-10 minutes.
2. Then add the remaining water in a thin stream and shake again.
3. During operation, shaking is repeated every 30 minutes.
4. The sprayer is set to the finest spray in the form of dust.
5. Consumption rate: each sheet is moistened without dripping on the ground.
6. After treatment, the tank is washed 3-4 times, shaking vigorously each time. Water is drained into the sewer.

Grapes are processed in dry, calm weather in the morning or evening hours.

Safety

The active ingredients of the fungicide "Kvadris" belong to the 2nd class of danger for humans and the 3rd class for bees. Subject to basic safety rules, the drug can be described as safe for the environment and humans:

1. Don't spray grapes during flowering.
2. Do not allow drops of working fluid to fall on the ground. The fungicide is insoluble and does not decompose in water, if it enters groundwater, it can harm animals in nearby water bodies.
3. You can not use "Quadris" near water bodies (within a radius of 2 km).
4. Processing plants should be carried out in a special protective suit and gas mask.
5. For some types of plants, in particular apple trees, even residual microdoses of "Quadris" can cause the death of the crop and the entire plant. Therefore, you can not use the sprayer after the "Quadris" for the treatment of fruit crops.
6. Do not allow the working fluid to enter when spraying on other crops. Especially there is a danger in windy weather.
7. Preparation of the liquid must be done in a special room, inaccessible to other people.
8. Work with plants can be continued 3 days after treatment.

Processing times

The drug is suitable for prophylactic use and in the early stages of the disease. Since, first of all, it stops the growth of fungi and sporulation, and does not lead to complete destruction. The validity of "Quadris" on grapes is about three weeks.The waiting time for the action of the drug is 2-3 days.

Time for processing grapes:

• before flowering;
• after flowering;
• time of immature ovaries;
• one week before harvest.

Processing bushes shortly before harvesting increases its shelf life. Re-treatment can be carried out no earlier than 3 weeks later. In one season, it is advisable not to carry out more than two treatments with Quadris, but to alternate with other fungicides.

Pros and cons of the drug

Modern fungicide "Kvadris" successfully fights pathogens of downy and powdery mildew of grapes in the early stages of the disease. But it has a number of disadvantages that should be considered when choosing this drug.

Pros:

1. The active ingredients of the Quadris improve photosynthesis, thereby prolonging the growing season of plants and increasing yields.
2. Very broad spectrum.
3. Fast decomposes into harmless substances after reacting with pathogenic fungi.
4. Safe for humans and the environment at recommended dosages.

Cons:

1. Relatively high cost of the drug.
2. Requires frequent mixing of the working fluid during processing.
3. Opened suspension vial cannot be stored.
4. Do not use more than twice per season.
5. Be sure to alternate with fungicides of a different mode of action.
6. Cannot be used near bodies of water.
7. Protective suit required for handling.
8. Toxic to apple trees and other fruit crops.

If the rules of application of the fungicide are observed, it will help to quickly stop the development of fungal diseases of the vine.

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