Apple tree diseases can reduce the yield and resistance of the trees themselves to external influences. Modern drugs are being developed to treat and prevent fungal infections. Let's consider the capabilities of the Tercel fungicide, specially obtained to combat these diseases. How the product works, how to make the solution, what rates to use according to the instructions. Compatibility of the drug and its substitutes.
Composition and release form of Tercel
The active ingredients of Tersela act in combination and reliably protect apple trees, both on the surface of the bark and leaves, and inside them. Works in dry and wet weather. The fungicide contains pyraclostrobin and dithianone at concentrations of 40 and 120 g per kg. The substances belong to the classes of strobilurins and quinones.
By the method of penetration, Tercel is classified as a contact pesticide, and by the nature of its action, it is classified as a protective pesticide. The manufacturer BASF produces the fungicide in the form of water-dispersible granules or suspension, in 5 kg bags or 5 liter canisters.
Mechanism and spectrum of action
After spraying, pyraclostrobin penetrates into the tissues of the apple tree and is distributed throughout the plant, even in those areas with which there was no direct contact of the drug. The substance blocks cellular respiration of fungi. Dithianon remains on the surface in dripping moisture and blocks pathogens from entering. The substance stops vital processes occurring in mushrooms and inhibits the activity of enzymes.
The active substances remain in reserve in plant tissues, which is why they become resistant to precipitation. At the same time, it is precisely because of moisture that they are gradually released and redistributed.
This occurs in humid weather, when fungal activity is greatest. In addition, Tercel prevents the formation and germination of spores, which stops the penetration of infection. Can be used to protect harvested apples from rot during storage.
Fungicide consumption rate
Apple trees are sprayed prophylactically against scab and powdery mildew. Application time - from the pink bud stage to the stage of fruit development the size of a walnut.The interval between spraying is 8-14 days, the interval depends on the level of infection and weather. The maximum number of treatments is no more than 3 for the entire season.
The application rate of the Tercel preparation is 2-2.5 kg per hectare.
Instructions for use of the drug
The duration of the protective effect of Tercel is 10-12 days. Scab and powdery mildew pathogens do not develop resistance to the drug. The fungicide can be used on plants at any stage of development, even during flowering. Its action does not depend on temperature conditions. The waiting period after the last spraying is 35 days. Before the waiting time ends, you cannot collect and use fruits from treated apple trees.
Security measures
When diluted in standardized dosages, the drug "Tersel" is non-phytotoxic. It has low toxicity for people, bees, and is toxic for fish and aquatic organisms (gardens located near water bodies cannot be sprayed). May be harmful if swallowed and may irritate eyes.
Avoid contact with skin and eyes; If liquid gets into them, immediately rinse them with plenty of water for 15 minutes. Do not drink, smoke or eat during treatment. If it gets into the mouth and stomach, rinse with water and induce vomiting. If you feel unwell, consult a doctor.
Compatibility
"Tersel" is perfectly combined in mixtures with such fungicides as "Bellis", "Cumulus", "Polyram". You can combine it with the insecticides “BI-58 Novy” and “Fastak”, as well as the acaricide “Masai”.If the instructions do not indicate whether pesticides are compatible or not, you need to dilute the preparations in a small volume before preparing the solution. If there are no unexpected reactions, they can be used together.
Storage conditions and shelf life
Store “Tersel” away from food, drinks, feed mixtures, grains, and aromatic substances. Protect granules from humidity, heating above 40˚C, and sunlight. When stored in a room with a temperature higher than permissible, the drug may change its properties. Do not allow children or animals to reach the fungicide.
The shelf life in the original closed packaging is 2 years from the date of manufacture. Once completed, the pesticide cannot be used. The solution is also not stored for a long time; it needs to be prepared only on the day of use and used all up. Dispose of the remains: pour the liquid onto the ground in a place unsuitable for growing plants.
Substitutes
In terms of the active substance, dithianon is analogous to the fungicide “Tersel” - “Acrobat Top”, “Delan Pro”, “Delan”, “Delor”, in terms of pyraclostrobin - “Abacus Ultra”, “Bellis”, “Delit Pro”, “Insure Perform", "Cabrio Top", "Caramba Duo", "Optimo", "Priaxor", "Signum", "Ceriax Plus". They act similarly, so they can be used as a replacement.
The fungicidal agent "Tersel" exhibits high activity against pathogens of scab and powdery mildew. The drug is resistant to precipitation, works at any temperature, apple trees can be treated from the moment the buds open until the stage of formation of a small fruit. Sticks to leaves and is not washed off by rain. Destroying pathogens, it is not addictive. Not phytotoxic to humans and bees in doses recommended by the manufacturer.By eliminating diseases, it helps to increase the yield of apple trees and improve the quality of fruits.
