Content
Everyone knows that healthy plants produce abundant and high-quality harvests. In order for crops to resist pathogenic microorganisms and pests, it is important to increase their immunity. To do this, agronomists treat plants with special protective agents.
One of the newest drugs is the Optimo fungicide from the Basf company, which suppresses the development of many fungal diseases. Let's find out how it works, read its instructions for use and reviews from agronomists.
Features of the drug
Optimo is a new contact fungicide that has 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 better resists pathogenic microorganisms.
Purpose and form of release
Optimally efficient protects corn, soybeans and sunflowers from many fungal diseases:
- fusarium (dry rot);
- Phomopsis (gray spot);
- Alternaria blight;
- peronosporosis (downy mildew);
- ascochyta blight (fungal leaf spot);
- blistering smut;
- helminthosporiosis;
- stem and root rots.
The fungicide is released in the form concentrated emulsion in plastic containers of 5 and 10 liters. It has a dark yellow color and a faint odor.
Mechanism of action
The active component of the drug Optimo is pyraclostrobin, the concentration of which is 20% (200 g of active substance per 1 liter of emulsion). After treatment, one part of the fungicide quickly penetrates the plant tissue and is evenly distributed throughout all parts of the plant.
The other part of the substance is retained on the treated surface, thereby creating a protective layer and providing long-term protection to the plant. Pyraclostrobin suppresses the respiratory processes of pathogenic fungi, prevents their growth and blocks the growth of mycelium. The basic vital functions of microorganisms are disrupted 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 harvest;
- effective control of many fungal diseases;
- reduces the susceptibility of plants to unfavorable growing conditions (heat and drought);
- accelerates plant growth;
- improves the process of photosynthesis in leaves and a greening 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 absorption.
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 cost, which is not economical.The average price for 1 liter of concentrate is 2-2.3 thousand rubles. But the result from using a fungicide usually justifies the cost.
Features of preparing the solution
It is recommended to spray the plant with Optimo fungicide in calm, windless weather, in the evening or morning. First, you need to thoroughly rinse the spray bottle or sprayer to remove any dirt. Then shake the suspension in the canister, pour out the required amount of the drug and dilute it in 1 liter of warm water. Mix 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 according to instructions.
Corn
During drought or wet weather, crops can easily become infected with many diseases: root and stem rot, fusarium, helminthosporium and blister smut. You can lose up to 50% of the grains and 30-40% of the green mass of corn.
Timely preventive procedures using the fungicide Optimo will help protect the crop. The working solution of the drug is prepared at the rate 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 treatment. For the entire 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, the following is consumed: for aerial treatment, 50 liters of working fluid, and for ground treatment - 300 liters (up to 500 ml of fungicide).
Soybeans
Soybean is affected by many fungal diseases. Fungicide Optimo helps protect plantings from ascochyta blight and peronospora, 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 a timely manner.
For ground spraying, mix a solution of 18-20 ml of suspension and 10 liters clean water. According to the instructions for aviation treatment, the dose of fungicide in the working fluid is increased 5 times. The crop needs to be sprayed throughout the entire season. 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 working fluid: from 50 to 300 liters (up to 500 ml of suspension) depending on the processing method.
Sunflower
The most harmful diseases of sunflower include: gray rot, Alternaria blight, rust, Phomosis and Phomopsis. Pathogenic microorganisms become active during warm and humid weather. They can attack the entire plant or its individual parts.
To preserve the harvest and save sunflowers, agronomists use the fungicide Optimo. To prepare the solution, pour 18-20 ml of concentrate into a ten-liter bucket and mix until smooth. The resulting liquid is sprayed onto the plants 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 5 times. Up to 500 ml of suspension is used per hectare of sunflower plantings. The dose rate of the drug depends on the infectious background and the method of treatment.
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 this you should conduct a drug compatibility test. 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 hazard class 3. Despite this, the drug can cause irritation to the eyes, skin and allergic reactions. Toxic to fish and aquatic organisms, do not allow the substance to enter the soil and groundwater.
Rules for working with the drug Optimo:
- It is mandatory to use latex gloves, special clothing, a mask and safety glasses.
- Mix the solution outdoors or in a well-ventilated room.
- While using the drug, do not drink, smoke or eat.
- After finishing work, take a shower and change clothes.
- If the solution accidentally gets into your eyes or skin, rinse the affected area thoroughly with water.
- If you inhale vapors, move to fresh air.
- If swallowed, rinse mouth and drink 2-3 glasses of water and consult a toxicologist. Do not induce vomiting.
Store for 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 protect the plant from fungal infections, but also increase the volume and quality of the harvest. If you follow the instructions and standards for applying the fungicide, the substance will not cause harm to humans and the environment.
