Orvego Fungicide: Description and Composition, Instructions for Use, and Dosage

Content

Composition, existing forms of release and purpose
Mechanism of action
Advantages and disadvantages
Calculation of consumption for different plants
Rules for preparing the working mixture
Instructions for use
Tomato
Cucumber
Ware potatoes
Onion
Precautions for handling
Phytotoxicity
Possible compatibility
Storage rules
Similar means

In an attempt to protect crops from fungal diseases, gardeners and farmers are increasingly opting for two-component chemicals, which have different effects on pathogens and are therefore more effective. The fungicide "Orvego" was developed by German specialists for the treatment and prevention of diseases such as late blight, downy mildew, and mildew.

Composition, existing forms of release and purpose

Orvego contains two active ingredients, each with a different effect on pathogenic microorganisms, which accounts for its effectiveness. The first active ingredient is amethoctradine, with 300 grams per liter. The second ingredient is dimethomorph, with a concentration of 225 grams per liter. German manufacturer BASF produces the fungicide as a suspension concentrate. The chemical is packaged in 1-liter plastic bottles.

The instructions for use indicate that the fungicide, which has contact and systemic action, is intended for the treatment and prevention of fungal diseases of vegetable crops and grapes.

Mechanism of action

The product's mechanism of action against pathogenic microorganisms is based on the interaction of two components. The antispore-forming effect of dimethomorph alters the morphogenesis of the pathogen's cell walls. Within 1-2 hours of spraying, the fungus begins to disrupt its vital functions, and it dies.

Expert opinion

Zarechny Maxim Valerievich

An agronomist with 12 years of experience. Our best gardening expert.

Ametoctradine belongs to a class of chemicals to which oomycetes are resistant. It blocks the energy source necessary for fungal cell growth, resulting in the death of the microorganism.

Advantages and disadvantages

By using a systemic contact fungicide in their beds and fields, gardeners have noticed clear benefits from the product.

Pros and cons

Effective in combating pathogens such as downy mildew and late blight.

A new active ingredient to which fungi of the genus Oomycetes are not resistant.

Can be used for both therapeutic and preventive purposes throughout the entire growing season.

Resistant to atmospheric precipitation and irrigation 2 hours after spraying.

Ease of use and economical consumption of fungicide.

The disadvantages of the product include the need to conduct a chemical compatibility test before using it in tank mixtures.

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Calculation of consumption for different plants

The manufacturer's instructions for use specify application rates for different types of plants. These parameters should be taken into account to avoid harming crops.

The fungicide consumption is indicated in the table:

Sprayed crop	Diseases	Chemical norm	Frequency of treatments per season
Potato	Late blight and alternaria	From 800 ml to 1 liter per hectare of plantings	No more than three times
Grape	Mildew	From 700 ml to 1 liter per hectare of plantation	No more than 3 times
Cucumbers and onions	Peronosporosis	From 800 ml to 1 liter	No more than 3 times
Tomatoes	Late blight	From 800 ml to 1 liter	No more than 3 times

Rules for preparing the working mixture

The working solution is prepared before spraying to ensure the active ingredients remain effective. The required amount of the product is added to a 10-liter bucket of water and mixed thoroughly. The solution is then poured into a sprayer tank half-filled with water, and the agitator is turned on.

When the preparation is completely dissolved, add liquid to the full volume and mix thoroughly again.

Instructions for use

After preparing the working solution, begin spraying the crops.

Tomato

The first treatment of tomato plants is carried out at the budding stage. If necessary, repeat sprayings are carried out after 10-14 days.

Cucumber

Cucumber beds are sprayed when the first signs of disease appear. Three treatments per season are acceptable, with the last one no later than three weeks before harvest.

Ware potatoes

Potato fields are treated at the stage of row closure, and repeated after 14 days.

Onion

Spraying of onion beds is carried out throughout the entire growing season, the main thing is that at least 2 weeks remain before harvest.

Precautions for handling

When working with chemicals, be sure to wear protective suits and gloves. A respirator should also be worn to prevent inhalation of fungicide vapors.

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Phytotoxicity

When the instructions for the fungicide are followed, no cases of phytotoxicity have been identified.

Possible compatibility

The fungicide is permitted to be used in tank mixtures with other plant protection products, but a compatibility test is conducted beforehand.

Storage rules

The drug is stored in a utility room at a temperature not exceeding 30 degrees.

Similar means

There is no complete analogue of this fungicide in terms of composition. If necessary, it can be replaced with any chemical with a similar effect, such as "Oxychom."