Reduce medication costs, try these three methods

????Prevention first

??? Plant diseases develop from a single point to a whole area, from few to many, from mild to severe. For this type of disease, prevention must come first, and the key period for disease control must be seized. Applying medication before the disease occurs or in its early stages, with just one application the preventive effect is very good. If medication is applied after the disease has spread over a large area, at least 3 applications are needed to stop the spread. This not only increases medication costs, but also increases labor costs, and also causes irreversible losses to the crops.

Apply medication according to the symptoms

Many growers cannot identify the symptoms, and therefore cannot correctly choose the medication, resulting in poor or even ineffective control. First, they mistake plant physiological diseases for infectious diseases and use fungicides to treat physiological diseases. Physiological diseases are symptoms caused by the lack of a certain element. Only by supplementing the corresponding element can they be cured at the root. If fungicides are used to control them, the medication does not match the symptoms. It is not only ineffective, but also wastes labor and money.

Second, using fungicides to control bacterial diseases and viral diseases cannot achieve a therapeutic effect, and instead leads people to think there is a problem with the quality of the medication they bought.

Third, there are many types of fungal diseases that occur in crops. If the symptoms are not judged accurately, and the fungicide selected is inappropriate, the expected control effect will likewise not be achieved. For example, gray mold and rust are both fungal diseases, but their medications differ greatly.

Fourth, there is a difference between protective fungicides and therapeutic fungicides. Protective fungicides are used before the disease occurs, forming a protective film on the surface of the plant's stems, leaves and fruits to prevent the invasion of pathogens, playing a protective role. The effect of applying medication before the disease occurs is good, but the control effect after the disease occurs is poor. Therapeutic fungicides generally have a systemic action. They can be quickly absorbed and translocated within the plant, killing pathogens and playing a therapeutic role. After the disease occurs, therapeutic agents should be chosen.

The application method must be correct

For root diseases, the method of pouring the medicinal solution should be used. For diseases on the stem, spraying or brushing should be used. For leaf diseases, both the front and back sides should be sprayed, evenly and thoroughly, with emphasis on spraying the back of the leaves. For example, root rot should use the pouring method, and tobacco black shank should use the spraying method.