In the process of using pesticides , phytotoxicity often occurs due to various factors. In order to reduce the occurrence of phytotoxicity, farmers must do a good job in the selection and application of pesticides. In summer, due to high temperature and rain, it has become a high season for pests and diseases, and the application of pesticides has also increased significantly, and the problem of pesticide poisoning has become more frequent. So how do you choose and use pesticides in the summer? Summary of key points for pesticide selection and application in summer 1. Select medium and low-toxic pesticides according to the recommended dosage of the label. Try to limit or disable high-toxic pesticides in summer. Any pests and diseases that can be controlled with medium and low toxic pesticides will not use highly toxic pesticides. It is also not possible to spray more medium- and low-toxic pesticides. At present, many farmers' friends do not understand the safety of pesticides . They think that low- and medium-toxic pesticide residues are low, so they can be sprayed more, and there is blindness in actual operation. When spraying pesticides on farmers' friends, they should be applied before the safe interval according to the recommended dosage on the label. At the same time, do not mix pesticides casually to avoid increasing toxicity. It is also necessary to control the pesticide dosage and the concentration of the chemical solution, especially when formulating highly toxic pesticides, it is necessary to add enough water, and high concentrations cannot be used. 2, the use of strong systemic pesticides Attention should be paid to the use of highly systemic pesticides such as monocrotophos, methamidophos, phosphonamine, chlorpyrifos, sedum, carbendazim, carbendazim, thiophanate, triadimefon, tricyclazole, and fluconazole. After being absorbed by the stems and leaves of the crops, these pesticides can be quickly transmitted to various parts of the plant. After 4 to 6 hours, more than 70% of the active ingredients are absorbed into the tissues by the crops. After 6 hours of application, it rains heavily. Pests or germs can be killed, and their effects are less affected by rainfall. 3. Select quick-acting pesticides The quick-acting pesticides generally have strong contact and poisoning effects, and have strong knockdown force. After spraying, they quickly exert their prevention and control effects on pests and diseases, thereby avoiding or reducing the leaching of the rainwater by the medicament. For example, aphids on crops can be killed in less than 5 minutes after application. Commonly used quick-acting pesticides include Kangwei, Kuweiwei, Weiweiwei, Weiduowei, Guangkewei, Xinweiwei, Qianlingbao, Jinglingling, Xinguang No.1 and pyrethroid pesticides. These pesticides have a strong contact action, so most of them can kill pests after 1 to 2 hours of application. 4. Choose rain-tolerant pesticides The rain-tolerant pesticide is characterized by its resistance to rain erosion. It usually rains after 2 to 4 hours of application, and the efficacy is basically unaffected. Common rain-tolerant pesticides include Jinggangmycin, Bordeaux mixture, Suikeling, and Kuailing. 5, add adhesive to the agent Adding an adhesive to the liquid can enhance the adhesion of the pesticide on the stems and leaves of the crops and the surface of the pests. It is not easy to wash the medicines after the application of the light rain; it is difficult to blow the medicines when the wind is strong, and the pesticides can be increased. Residual effect, improve the effectiveness of prevention and treatment. Commonly used adhesives are diesel, kerosene, emulsion, pulp waste, saponin, soy flour, washing powder, pull-up powder, cheese, leather, soap, polyvinyl alcohol and the like. All localities can be flexibly selected according to local conditions. For example, adding about 60g of washing powder per 667m2 of liquid medicine, after mixing and spraying, it is difficult to wash the liquid medicine when it encounters moderate rain. 6, change the dosage form In the summer, when it is rainy, if it is not sunny, the emulsion type pesticide can be changed to powder type pesticide. Summary of key points for pesticide selection and application in summer 7, choose the right weather, avoid the high temperature at noon Look at the weather forecast before applying pesticides. Spraying more than 3 grades will cause pesticides to scatter, which not only affects the efficacy but also causes phytotoxicity. Especially the pesticides with high toxicity, high volatility and strong alkalinity are most obvious. In rainy days, the liquid is washed away by rain. The drug effect, polluting the environment; application at high temperature, prone to phytotoxicity and poisoning. Therefore, you should choose the right weather and time to apply. The best time to apply is: 9:00 am - 11 am (premature crop surface with dew), 4 pm - 6 pm. The best application weather is: the weather is fine, the air humidity is small, and the breeze. 8, spray in the rain to properly increase the concentration of the drug In the summer, when it encounters continuous rain, it must be sprayed, and it must be sprayed in the light rain. At this time, the concentration of the drug should be appropriately increased. Generally, the same liquid medicine, the water consumption should be reduced by about 20%. 9. Select the application time according to the law of pest activity According to the life cycle and activity rules of pests, the application time is selected. For example, for some night-time pests, it is necessary to apply the medicine in the evening, because it is selected in the evening to apply the medicine, so that the medicine is quickly absorbed by the plant, and the pests come out for food within 2 to 3 hours, resulting in poisoning. It is necessary to apply the drug in the larval stage, because no matter which kind of pest, the resistance in the larval stage is weak, the pest can be killed by the low concentration of the liquid. 10, grasp the rain gap application The application of pesticides in the rain gap is the key to controlling crop pests and diseases during the rainy season. When pesticides are applied in summer, it is necessary to pay attention to spraying during periods of no rain. Before spraying, you must pay attention to the dynamics of the weather and rush to spray in the gap after the rain. If it rains within 24 hours after applying the pesticide, re-spray once and reduce the spray concentration appropriately. 11. Prepare and spray pesticides in strict compliance with safety procedures Strictly follow the pesticide application procedures. For the preparation of pesticides, it is forbidden to use the bottle cap to pour the medicine. It is forbidden to use the drinking bucket to dispense the medicine. It is forbidden to use the barrel containing the medicine directly to go down the well, the river and the lower pool to take the water. It is forbidden to stir the liquid by hand. Wear protective equipment such as masks, latex gloves, plastic film aprons, etc. when dispensing. People must stand on the wind side to prevent inhalation of poisons. When spraying pesticides in the field, wear long-sleeved clothes, trousers and cotton socks. The exposed skin should also be coated with soap. It is necessary to adhere to the wind and spray, do not eat, do not smoke, wash hands and bathe after applying pesticides. When changing clothes, the sprayer should be cleaned, the sprayed field should be marked, and the unused pesticide should be kept properly. The pesticide application personnel are served by healthy young adults and should undergo certain professional and technical training. Special attention: drinkers, frail patients, chronic patients, skin diseases patients, pesticide poisoning, unhealed skin damage, those who have not recovered from the disease, and women who are breast-feeding, pregnant, or menstruating must not spray. Also, do not bring children to the work site when spraying. If there are children and old people playing next to the spraying plot, they should explain the reason and persuade them to leave. Spraying time should not be too long, generally no more than 6h per day. 12, the emergence of poisoning symptoms scientific treatment People who spray pesticides in the summer should always pay attention to physical changes. Once you have dizziness, nausea, shortness of breath, sweating, etc., stop spraying immediately, leave the field, go to the air fresh environment, remove the contaminated clothes, and wash the skin with water, but do not use Wash with hot water, because hot water will accelerate the absorption of the drug. If the poisoning situation is serious, you should take some antidote drugs or go to a nearby clinic for medical treatment. If the poisoning condition is very serious, symptoms such as difficulty in breathing, rapid heartbeat, vomiting, etc. should be promptly sent to the nearest hospital for rescue. More pesticide knowledge , please pay attention to China Pesticide Network Wall hung smart toilets are truly state-of-the-art bathroom fixtures, offering a host of features to enhance the user experience and add a sense of luxury to the bathroom. Wall Hung Smart Toilet, Wall Hung Toilet, Wall Automatic Toilet, Electric Toilet Automatic, Wall Bidet Toilet Guangdong Fabia Intelligent Technology Co., Ltd , https://www.fabiaintelligent.com
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Summary of key points for pesticide selection and application in summer