What are the precautions for tobacco pest and disease control?
What should be noted when controlling tobacco pests and diseases? The concentration of the spray solution has a direct bearing on the effectiveness of controlling tobacco pests, diseases and weeds. Generally speaking, if a commercial pesticide is used at a high concentration, its efficacy tends to be somewhat better. However, if the concentration is too high and exceeds a certain limit, the efficacy does not increase proportionally with the rising concentration...
What should be noted when controlling tobacco pests and diseases?
The concentration of the spray solution has a direct bearing on the effectiveness of controlling tobacco pests, diseases and weeds. Generally speaking, if a commercial pesticide is used at a high concentration, its efficacy tends to be somewhat better. However, if the concentration is too high and exceeds a certain limit, the efficacy does not increase proportionally with the rising concentration. An excessively high application concentration not only wastes the pesticide and increases agricultural production costs, but more seriously, it also kills a large number of natural enemies of pests and diseases, leading to increased pesticide resistance in pests and diseases and polluting the environment. At the same time, because tobacco itself has already exceeded its maximum tolerance concentration for the pesticide, it is very easy to injure the tobacco and cause pesticide damage, bringing huge losses to tobacco farmers. If the pesticide dilution factor is too large and the chemical concentration is mixed too low, below the dose needed to control tobacco pests, diseases and weeds, then it will fail to kill the harmful organisms, and this likewise wastes labor and pesticide; it can also cause great losses from pests, diseases and weeds because the appropriate control period is missed. In addition, if the pesticide concentration used is correct but the amount applied per unit area is too much or too little, the same consequences as using a concentration that is too high or too low will also occur. Therefore, accurately preparing the concentration of the chemical to be used and applying an appropriate amount of pesticide are the key to improving the control effect of the chemical, and only in this way can the goals of economy and safety be achieved.
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