Which pesticides can be sprayed in rainy days?
Summer is the high incidence period of pests and diseases, and it is also the peak period of spraying pesticides . Due to the rainy summer, and the weather forecast is still unable to accurately forecast, many farmers report that spraying pesticides is afraid of rain, sometimes it just rains when spraying pesticides. , wasting money and manpower. So, which pesticides can be sprayed in rainy days, or which pesticides are effective after raining? To be honest, there are not many pesticides that can now have a "waterproof" function. This reminds farmers that before you spray pesticides, you must check the local weather forecast. If the forecast is rainy or the weather is heavier, do not spray the medicine temporarily, and wait until the rain stops before spraying. Of course, if a serious pest in urgent need of medication, it should pay attention to the choice of pesticide, to select those with the absorption of internal and quick result, resistance to rain characteristics of pesticides and micro-biological pesticides, try to avoid the rain caused the loss of efficacy. Because systemic pesticides can be absorbed by crops through the roots, stems, leaves and other parts of crops, they play a role in a short period of time. For example, bactericidal insecticides such as carbendazim, triadimefon, tricyclazole, metoclopramide and leaf dry net, 80% of the active ingredients are absorbed by the crop 4 to 5 hours after application, even if it sprays soon after spraying It will also lose less efficacy. The commonly used microbial pesticides such as Jinggangmycin, Chunleimycin and Beauveria bassiana are more conducive to the germination and reproduction of sporophytes under high humidity conditions. The application of such pesticides in rainy days can fully exert their bactericidal and insecticidal effects. In the southern rainy season, there is more rain, and the farmers should pay more attention to spraying: 1. It is mainly based on systemic fungicides and supplemented by protective agents. Systemic fungicides such as carbendazim, oxazolol, etc., protective agents such as Dasheng, mancozeb and so on. A systemic fungicide can be used to remove pathogens that are latent in young fruits and leaves. Moreover, in the rainy season, it can be quickly absorbed by fruit trees to prevent the rain from scouring and reducing the efficacy. 2. Multiple fungicides are used alternately. This can prevent the bacteria from developing resistance and ensure the quality of the spray. 3. Use Bordeaux mixture. Bordeaux liquid not only does not produce drug resistance, but also because it has strong adhesion to lime and is resistant to rain, it is very suitable for spraying in flood season. When spraying, it should be chosen to be sunny. Generally used on apples and grapes. Pear can also be applied, but pay attention to the sensitivity of different pear varieties to "copper ions", choose a dilution factor to prevent phytotoxicity. The method of using Bordeaux mixture and bactericide alternately is effective, and the interval is about 10-15 days. In the case of hot and rainy summer and autumn, Bordeaux liquid is easy to cause phytotoxicity. After the phytotoxicity occurs, spraying 0.5%-1% of the lime water solution in the early stage of the phytotoxicity can slow down the release rate of copper ions and reduce the phytotoxicity to a certain extent. After the crop is damaged, 0.3% urea solution and 0.2% potassium dihydrogen phosphate solution are sprayed every 10-15 days to help the crops resume growth and reduce the damage of the pesticide. (Source: Sannong Encyclopedia) Here you can find the related products in Temperature Measurement, we are professional manufacturer of Temperature Measurement,Temperature Measuring Instruments,Wireless Temperature Recorder,Temperature Measuring Devices. We focused on international export product development, production and sales. We have improved quality control processes of Temperature Measurement to ensure each export qualified product. Temperature Measurement,Temperature Measuring Instruments,Wireless Temperature Recorder,Temperature Measuring Devices Xi'an Gavin Electronic Technology Co., Ltd , https://www.gaimcmeas.com
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