Q: The 136****8899 mobile phone sent a message: I am from Jiangdu. Amount of clodinafop propargyl chloride 7.5 g, isoproturon pure drug 90 g, and fluazifloxacin isopropyl ester 10 g to control weeds in wheat fields. How long does the rain affect the control effect? After a short period of raining after application, how long does it take to reapply the drug?
Answer: Isoproturon can be absorbed by the roots of plants, and it will rain in the short term after spraying. As long as the rainfall is not too large, the effect of weeding will not be affected, and the soil will be moisturized but it will help improve the weeding effect. Clodinafop-propargyl ester and fluop- oloxy acetic acid have good internal absorption conductivity, and they can be absorbed by weeds after 1–2 hours of application. The effect of rain on weed control is insignificant. Production does not generally occur when the herbicide is applied after the herbicide has been applied in spring wheat fields.
The amount of clodinafop-propargyl inhibits the growth of wheat seedlings and can cause dead seedlings when severe. According to the method mentioned in the text message, a dose of 7.5 grams of clodinafop propargyl is used per acre and the dosage is relatively large. Even if it rains in the short term after application, it is not appropriate to repeat the administration of the drug in a short period of time. Otherwise, it is prone to phytotoxicity.
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