In order to clarify the effect of direct live dragon 15% cyhalofop-ester and 15% cyhaloflavin EC on weeds in direct seeding fields, Cao Fangyuan and others from Yandu District, Yancheng City carried out in 2009. test.
The experiment was conducted in direct-seeded paddy field where weeds were mainly scattered and gold was discovered. Set aside 15% cyhalofop-butyl emulsifiable concentrate for each acre of 40 ml, 53 ml, 80 ml, 160 ml, shimmer gold 15% cyhalofop-butyl ester emulsifiable concentrate 40 ml, 80 ml, daughter's milk 10% cyhalofop-butyl ester 60 ml A total of 8 medicaments were treated in 120 ml and no drug was used as a control. The area of ​​the plot is 20 square meters, repeated 3 times, and each treatment plot is randomly arranged. When seedlings 3.5-4 leaves, madder 2.5-3.5 leaves, add 15 kg of water spray per acre. The field was moist and waterless when applied, and the water was irrigated 36 hours after the application, and the water was kept for 6 days. 28 days after the drug treatment, the efficacy of 15% cyhalofop-butyl chloroaurate EC on the control of alfalfa: the efficacy of the 80-ml per acre medication, the fresh weight control effect was 92.3%, 95.2%, respectively, were slightly higher than the medication per acre 53 ml of treatment, but the difference is not obvious, the control effect of the two treatments are significantly better than the treatment of 40 ml per mu; the control effect of the 160 ml treatment per mu, the fresh weight control effect is 100%, significantly better than The treatment with 40 ml per mu and 53 ml is slightly better than the treatment with 80 ml per mu. Control effect of different pesticides on Valerian: Use 15% cyhalofop-butyl ester emulsifiable concentrate 40ml and 80ml per acre, and its control effect is similar to that of dry gold 10% cyhalofop-butyl ester emulsifiable concentrate with the same effective ingredient dosage. Difference: The use of a live dragon 15% cyhalofop-ester emulsifiable concentrate EC 40 ml, its control effect is significantly lower than the same active ingredient Shuo Jin 15% cyhalofop-butyl ester EC, dry gold 10% cyhalofop-butyl ester EC treatment; per acre The use of live dragon 15% cyhalofop-ester 80 ml, control effect is slightly lower than the same active ingredient Shuo Jin 15% cyhalofop-ester emulsifiable concentrate, daughter of 10% cyhalofop-butyl ester EC treatment, but the difference is not obvious.
In the demonstration process in Daejeon, the live dragon 15% cyhalofop-ester and 15% cyhalofop-ester have shown good control effects on live weeds such as weeds, dried gold, and crabgrass. It is recommended to use 80 ml per acre for production, spray 15-20 kg of water, control the weeds at the 2-3 leaf stage, dry the fields before spraying, and apply water for 24-48 hours after the application. 7 days. The water retention time should not be too short, so as not to reduce the effectiveness of control. When the age of grass reaches 4-6 leaves, the dosage should be appropriately increased, and the water consumption should be kept constant to increase the concentration of the liquid and ensure the effectiveness of control.
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