The recent cold air activity is frequent, and the cold wave weather has a wide range of impacts. Wheat field weeding and herbicide must be particularly cautious. Pay attention to the weather forecast before taking the medicine and grab the “cold tail warmer†medication. Most medicines should ensure that the temperature reaches 5°C～10°C for more than 3 days after medication, otherwise the control effect is not good and it is easy to produce phytotoxicity. Makado 15% clodinafop-propofol WP and Maixi 58g/l diclofenac suspension are less affected by the weather. They are safe in the low-temperature period and have good effects. They can be used to control the deficiencies of wheat fields. Undergraduate weeds and broadleaf weeds.
Weed control of wheat field weeds in wheat, cold air can not be used during the active period, such as commonly used herbicides. Isoproturon will reduce the cold resistance of the young wheat seedlings, and will easily cause the seedlings to suffer “frozen phytotoxicityâ€, requiring no frost weather for 1 week after application. Cryo-ozonazole application
Grass spirit, wheat seedlings are also vulnerable to phytotoxicity, weeding effect will be affected. The clodinafop-propargyl ester has a broad spectrum of grasses, wide application duration, good compatibility, high safety to wheat, and no change in temperature due to temperature changes. It can be applied from October to April, from the 2-leaf stage to the jointing stage. Can be applied during the period. Winter weeding can be achieved by using 15% methacrylate WP in 20-30 grams per mu.
Tribenuron, which is used to control broad-leaved weeds, is slow to apply the herbicide at low temperatures. Mixing 2A and 4C can increase the speed of herbicidal treatment. However, it is generally not recommended to apply these two at low temperatures (below 5°C). medicine. The efficacy of flurazoxime is stable at low temperature. Even if the temperature is 2°C, it still has stable efficacy. With a wide application period, it can be applied from late November to late January.
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