The use of smearing methods to prevent rotten stems from vegetables is generally effective. However, many farmers have recently reported that it is very difficult to cure vegetable rotten stems using smearing methods. There are three main reasons.
First, there was no scraping of the disease before spraying and painting. The epidermis of the diseased part is rotted after the infection of the diseased bacteria. If it is not scraped off, the medicine is applied directly. The medicine only acts on the surface layer, and the inside will continue to rot. In particular, the poorly absorbable medicines such as copper preparations are applied. The area around the diseased part is the most easily overlooked area. Care should be taken to clean it up.
Second, the time of spraying and painting did not master. The best choice is to apply when the temperature is high on sunny days, and wet the applicator area in the morning or evening, which will affect the effect. Adding proper amount of dry fine soil and strong fruit setting in the medicament can shorten the formation time of the water film and promote the quick healing of the diseased wound.
Again, the medication is simple. The vegetable farmer found that only the sick department was coated with rotten stems and lacked overall control. Bacterial diseases, diseases, etc. are highly contagious diseases, especially when the humidity in the shed is high and the nighttime dew condensation is rapid. After the diagnosis of the type of disease, immediately spray or fumigate the drug before applying the topical application.
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