What are the ways to improve the effect of fungicides?
Fungicides, also known as biocides, bactericides, microbicides, etc., usually refer to chemical agents that can effectively control or kill microorganisms in the water system - bacteria, fungi and algae. In the world, it is usually used as a general term for the prevention and treatment of various pathogenic microorganisms. So what methods do fungicides have to improve the bactericidal effect?
1, reasonable allocation of concentration
Both water and wettable powder drugs need to be diluted with water before spraying. Different concentrations of fungicides have requirements, so the ratio should be strictly in accordance with the instructions, and a reasonable configuration of the concentration is more conducive to the effectiveness of the fungicide. If the ratio is arbitrary, the high concentration will cause drug damage to crops; The concentration is too low to meet the control requirements.
2, suitable spraying time
The time of spraying fungicide is directly related to the control effect. Too early spraying will cause the waste of fungicide and reduce the control effect. Late pathogens are already harming crops. Therefore, it is necessary to use drugs in time according to the law, forecast and specific conditions of different diseases. In general, the time of administration of fungicides can be chosen before or at the beginning of the disease.
3. Improve drug quality
The quality of fungicide includes the quantity of medication, The Times of medication and the quality of spray. The amount of drug use should be appropriate, too much drug use will increase the cost and cause drug damage, too little and can not achieve the prevention and control effect, so increase or decrease according to the specific situation. The number of doses can be determined by the residual period of the agent and the weather conditions, and it is generally sprayed once every 10-15 days, a total of 2-3 times. If it rains after application, it is necessary to spray. The methods to improve the quality of the medicine are to spray the spray evenly and finely throughout the stems and leaves of the plants.
4, strictly prevent drug damage
There are many reasons for the damage caused by fungicides, the agent itself, the different sensitivity of the crop, the growth stage of the crop and climate conditions will affect it. In general, water-soluble drugs, crops in the seedling stage and pregnancy flowering stage, high temperature drought, heavy fog and high humidity, etc., the probability of drug damage is greater, therefore, it needs to be handled carefully.
