The effective measures for the prevention and control of pests and diseases in agricultural lettuce, in addition to the right medicines for the control subjects, timely application of pesticides at the key moments, scientific drugs, etc., should also consider the following aspects: I. Comprehensive prevention and control measures: Adopting agricultural control measures such as farming prevention and control, selection of disease-resistant varieties, biological control using insect natural enemies, pathogenic microorganisms, and selection of chemical pesticides are important methods for preventing and overcoming pest and disease resistance, and are effective. Prevent the emergence of drug-resistant populations. Second, alternating pesticides can delay pest resistance. In the alternative use of pesticides to control pests and diseases, the use of bactericidal (worm) agents that have different mechanisms of action and no cross-resistance to each other should be used. Otherwise, the resistance of pathogens (pests) will further develop and it will be difficult to obtain effective control. In the systemic fungicide, an alternative agent suitable for the control of drug-resistant germs can be selected from conventional protective fungicides such as copper preparations, inorganic sulfur preparations, dithiocarbamates, chlorothalonil, etc., phosphoramide and Thiophosphate fungicides are used alternately to prevent various diseases in rice. When using pesticides alternately, it should be noted that there is often cross-resistance between the same compounds or similar compounds. For example, many germs have cross-resistance to carbendazim, prilin, and thiophanate-methyl, which should not be used alternately. Third, the mixed use of pesticides. Mixed use of pesticides, on the one hand, will help prevent pests from becoming resistant, and will help control several pests and diseases that occur within the same period. On the other hand, it can save labor, expand the use of pesticides, increase efficacy, and reduce the side effects of pesticides. In the mixed use of pesticides, we must consider the efficacy of pests and diseases, but also consider the safety of humans and animals, but also consider whether the effect of synergies. The method of mixing pesticides: 1, pesticides and fungicides mixed. Insecticides are mixed with fungicides, such as whitefly or aphid, downy mildew, and gray mold, etc., which often occur in protectively cultivated cucumbers. Usually, the agents (Imidacloprid) against whitefly or aphid are controlled and downy mildew is controlled. The agent (metalaxyl-Manson) or the agent controlling botrytis (Iprodione). In general, a protective bactericide is mixed with a systemic bactericide, or a bactericide having a different mechanism of action or action is mixed. Metalaxyl + mancozeb, cymoxanil + mancozeb, dimethomorphium + mancozeb, fluconazole + mancozeb provide both internal and external protection. 2, fungicides mixed with plant growth promoters. In order to achieve the purpose of preventing disease or enhance the resistance of plants, promote the growth of plants or cultivate strong seedlings. For example, a vegetable mixes auxin 2,4-D with fungicide (fludioxonil, pyrimethanil, etc.) that controls botrytis and smears tomato buds (or pods). 3. The foliar fertilizer of plant growth regulators is mixed with fungicides. Mixing a variety of trace elements, fungicides, and plant growth regulators or trace fertilizers necessary for plant growth or development can improve the wettability of the chemical liquid on the crop surface, increase the permeability of the chemical agent, and improve the effect. In short, the purpose of using a mixture or mixture is to expand the scope of control, delay drug resistance, increase efficiency, reduce the cost of medication, and save time and labor. Earloop Kn95 Face Mask,Kn95 Fold Flat Face Mask,Kn95 Filters Respirator,Kn95 Protective Face Mask Jiangmen anjian biotechnology co. LTD , https://www.jmanjianmask.com
How to Improve the Effective Measures of Disease and Insect Control Efficiency
Prev Article
What are the benefits of eating raisins?