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Everyone knows that healthy plants give a plentiful and high-quality harvest. In order for crops to be able to resist pathogenic microorganisms and pests, it is important to increase their immunity. To do this, agronomists treat plants with special means of protection.
One of the newest drugs is the Optimo fungicide from Basf, which inhibits the development of many fungal diseases. We learn how it works, get acquainted with its instructions for use and reviews of agronomists.
Features of the drug
Optimo is a new contact fungicide with unique properties. The drug can be used to prevent diseases and when the first symptoms of infection occur. After treatment on the plant natural immunity develops, therefore, the culture is better resistant to pathogenic microorganisms.
Purpose and form of release
Optimo efficient protects corn, soybeans and sunflowers from many fungal diseases:
- fusarium (dry rot);
- phomopsis (gray spotting);
- Alternaria;
- peronosporosis (downy mildew);
- ascochitosis (fungal leaf spot);
- main bubble;
- helmintosporiasis;
- stem and root rot.
The fungicide is available in the form concentrated emulsion in plastic containers of 5 and 10 liters. It has a dark yellow color and a slight odor.
Mechanism of action
The active component of the drug Optimo is pyraclostrobin, the concentration of which is 20% (200 g of active ingredient per 1 liter of emulsion). After treatment, one part of the fungicide quickly penetrates the plant tissue and spreads evenly throughout all parts of the plant.
Another part of the substance is retained on the treated surface, thereby creating a protective layer and providing long-term protection to the plant. Pyraclostrobin inhibits the respiratory processes of pathogenic fungi, prevents their growth and blocks the growth of mycelium. Violated the basic vital functions of microorganisms, and they die.
Advantages and disadvantages
Plant growers highlight a number of positive aspects of the drug Optimo:
- fungicide improves the quality and volume of the crop;
- effective control of many fungal diseases;
- reduces the susceptibility of plants to adverse growing conditions (heat and drought);
- accelerates plant growth;
- improves the process of photosynthesis in leaves and a landscaping effect is created;
- does not have a toxic effect on the treated plant;
- not dangerous for people, animals and beneficial microorganisms;
- resistant to precipitation, not washed off by rain and water;
- reduces the risk of plant lodging;
- increases nitrogen uptake.
Although the fungicide is effective against many pathogenic fungi, it is not suitable for all cultivated plants. Only sunflower, soybeans and corn can be treated with the Optimo solution. Means has a high costwhich is not economical. The average price for 1 liter of concentrate is 2-2,3 thousand rubles. But the result from the use of a fungicide usually justifies the cost.
Features of the preparation of the solution
It is recommended to spray the plant with Optimo fungicide in calm, calm weather, in the evening or in the morning. First you need to thoroughly rinse the spray gun or sprayer from dirt. Then shake the suspension in a canister, pour out the required amount of the drug and dilute it in 1 liter of warm water. Stir the solution with a wooden stick and pour it into the sprayer tank, which should already be 2/3 filled with water. Add remaining water as directed.
Corn
In drought or wet weather, planting crops can easily become infected with many diseases: root and stem rot, fusarium, helminthosporiasis and blister smut. You can lose up to 50% of the grains and 30-40% of the green mass of corn.
Timely organized preventive procedures using Optimo fungicide will help protect the culture. The working solution of the drug is prepared from the calculation 15-20 ml of concentrate per 10 liters of water for ground spraying and 100 ml of emulsion per bucket of water (10 liters) for aerial spraying. For the whole season, corn requires one spray. It is carried out during the formation of internodes or when threads appear from the cobs. For 1 hectare of plantings, 50 liters of working fluid are consumed during aerial processing, and 300 liters (up to 500 ml of fungicide) for ground processing.
Soy
Soy is affected by many fungal diseases. Fungicide Optimo helps protect plantings from ascochitosis and downy mildew, which damage beans, seeds and leaves. A weakened plant can be attacked by other pests, so it is very important to take preventive measures in time.
For ground spraying, mix a solution of 18-20 ml suspension and 10 liters pure water. According to the instructions for aviation treatment, the dose of fungicide in the working fluid is increased by 5 times. For the whole season, the culture must be sprayed just once. The procedure is carried out during the growing season for prevention or when the first symptoms of a fungal disease appear. Consumption rate of the working fluid: from 50 to 300 liters (up to 500 ml of suspension) depending on the processing method.
Sunflower
The most harmful sunflower diseases include: gray rot, Alternaria, rust, phomosis and phomopsis. Pathogenic microorganisms become active during warm and humid weather. They can attack both the whole plant and its individual parts.
To save the crop and save the sunflower, agronomists use the Optimo fungicide. To prepare a solution, 18-20 ml of the concentrate is poured into a ten-liter bucket and mixed until smooth. Plants are sprayed with the resulting liquid 1-2 times. The first procedure is carried out when the first signs of infection appear on the leaves and basket. The second – 2-3 weeks after the first. When air-processing, you need to increase the concentration of the solution by 5 times. It takes up to 500 ml of suspension per hectare of sunflower plantings. The consumption rate of the drug depends on the infectious background and the method of processing.
Compatibility with other drugs
Optimo mixes well with many insecticides and fungicides. The product is not compatible with strong oxidants and acids. Fungicide can be added to tank mix, but before that, a drug compatibility test should be carried out. If a precipitate appears when mixing substances, or the mixture changes temperature, they are incompatible.
Safety regulations
Fungicide Optimo not harmful to humans and mammals, as it belongs to the 3rd hazard class. Despite this, the drug can cause irritation of the eyes, skin and the appearance of allergic reactions. Toxic to fish and aquatic organisms, avoid contact with soil and ground water.
Rules for working with the drug Optimo:
- Be sure to use latex gloves, special clothing, masks and goggles.
- Mix mortar outdoors or in a well ventilated area.
- In the process of using the drug, do not drink, smoke or eat.
- After finishing work, take a shower and change clothes.
- If the solution accidentally gets into the eyes and on the skin, rinse the affected area thoroughly with water.
- If vapors are inhaled, move to fresh air.
- If swallowed, rinse mouth and drink 2-3 glasses of water, consult a toxicologist. Do not induce vomiting.
Store no more than 3 years in a separate room, away from drinks and food. Do not give to children.
Feedback from an agronomist
Conclusion
Fungicide Optimo is a modern and promising drug that deserves attention. It helps not only to protect the plant from fungal infections, but also to increase the volume and quality of the crop. Subject to the instructions and norms for applying the fungicide, the substance will not harm humans and the environment.
