Methods Of Improving The Effect Of Fungicides

1. Reasonably configure the concentration
Whether it is a water agent or a wettable powder drug, it needs to be diluted with water before spraying. Different fungicides have different concentration requirements, so the ratio must be strictly followed the instructions, and a reasonable concentration is more conducive to the effectiveness of the fungicide. If the ratio is random, too high concentration will cause phytotoxicity to crops; too low concentration will not meet the control requirements.
2. Appropriate spraying time
The time of spraying fungicides is directly related to the control effect. Spraying too early will cause waste of chemicals and reduce the control effect; too late pathogens have already caused harm to crops. Therefore, it is necessary to use drugs in a timely manner according to the law of occurrence of different diseases, forecasts and specific conditions. Generally speaking, the application time of fungicides can be chosen before or at the beginning of the onset of the disease.
3. Improve the quality of medication
The application quality of fungicides includes the quantity of application, the frequency of application and the quality of spraying. The amount of medication should be appropriate. Too much medication will increase the cost and cause phytotoxicity, and too little medication will not achieve the control effect. Therefore, increase or decrease according to the specific situation. The frequency of medication depends on the residual effect period of the agent and the weather conditions. Generally, it is sprayed once every 10-15 days, for a total of 2-3 sprays. If it rains after application, respray is required. The method to improve the quality of the medicine is to spray the medicine evenly and finely, and spray it all over the stems and leaves of the plants.
4. Strictly prevent drug damage
There are many reasons for fungicides to cause phytotoxicity, including the pesticide itself, different sensitivity of crops, growth stage of crops and climatic conditions. Generally speaking, drugs with strong water solubility and crops are more likely to cause phytotoxicity during the seedling stage, booting flowering stage, high temperature and drought, heavy fog and high humidity, so they need to be handled carefully.