What should tobacco pay attention to to prevent and control diseases and insect pests?
What should tobacco pay attention to to prevent and control diseases and insect pests? The concentration of the solution is directly related to the effect of controlling tobacco disease and Cordyceps sinensis. Generally speaking, if the concentration of commercial pesticides is high, the efficacy is relatively better. However, if the concentration is too high, beyond a certain limit, the efficacy does not increase proportionally with the increase of the concentration. Excessive concentration of pesticide will not only cause waste of pesticides and increase the cost of agricultural production, but also kill a large number of natural enemies of diseases and insect pests, resulting in increased drug resistance of diseases and insect pests and environmental pollution. At the same time, because tobacco itself has exceeded the maximum tolerated concentration of pesticides, it is very easy to harm tobacco and cause drug damage, resulting in huge losses to tobacco farmers. If the dilution multiple of pesticides is too large, the concentration of pesticides is too low, which is lower than the dose needed to control tobacco diseases, insect pests and weeds, then the purpose of killing pests can not be achieved, and it is also a waste of labor and insecticides. it will also cause great losses to diseases, insect pests and weeds due to missing the appropriate period for prevention and control. In addition, if the concentration of the agent is correct, but the amount of drug used per unit area is too much or too little, it will also have the same consequences as too high or too low concentration. Therefore, the accurate preparation of pesticide concentration and the application of appropriate dosage is the key to improve the effect of chemical control, and only in this way can we achieve the purpose of economy and safety. Click to get more tobacco planting techniques click to get more flower planting techniques
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How to control tobacco red spot disease?
How to control tobacco red spot disease? Tobacco brown spot is a serious disease that widely occurs in tobacco areas of the world. It is estimated that the incidence area of tobacco red spot accounts for about 30% of the tobacco planting area in China every year. Red spot disease not only makes tobacco leaves incomplete, but also continues to expand in the curing process, resulting in uneven color of flue-cured leaves.
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How to manage Lentinus edodes cultivation?
How to manage Lentinus edodes cultivation? Please guide the quality of Lentinus edodes management directly affects the yield and benefit. Good cultivation management is a key link of Lentinus edodes production. Indoor and outdoor cultivation methods can be adopted. First, indoor bacteria management (1) minimize the number of indoor mushroom bags and the number of layers of bags, two.
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