What are the precautions for chemical weed control in rapeseed?
What should be noted when using chemical weed control in rapeseed? Please give guidance. For chemical weed control in rapeseed, the higher the temperature, the faster the effect. The best control effect is achieved during the vigorous growth period of weeds (before the 3-4 leaf stage), that is, about 20 days after rapeseed transplanting. 1. It is strictly prohibited to use herbicides banned by the state. Such as metsulfuron-methyl, chlorsulfuron, tribenuron-methyl and their compound formulations...
What should be noted when using chemical weed control in rapeseed? Please give guidance
For chemical weed control in rapeseed, the higher the temperature, the faster the effect. The best control effect is achieved during the vigorous growth period of weeds (before the 3-4 leaf stage), that is, about 20 days after rapeseed transplanting.
1. It is strictly prohibited to use herbicides banned by the state. Such as metsulfuron-methyl, chlorsulfuron, tribenuron-methyl and their compound formulations (such as Maicaojing, etc.). It is also strictly prohibited to use herbicides without the "three certificates".
2. The weeding area must be accurate (666 sq m per mu), and the selection of herbicide type and dosage, application time, and target of control must be accurate.
3. For pre-emergence weed control after sowing, the soil must be covered well before applying the herbicide.
4. The herbicide must be mixed evenly, and spraying should not be repeated or missed, so as to avoid phytotoxicity or poor effect.
5. For fields with dry soil, water should be sprayed first before applying the herbicide.
6. Spraying equipment that has been used for herbicides should be rinsed with water to avoid causing phytotoxicity when controlling pests and diseases.
When applying herbicide during the crop growing period, a fan-shaped nozzle or a protective hood can be used for directed low-position spraying to prevent the spray liquid from splashing onto sensitive crops.
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