Before cotton is sown, 48% trifluralin can be sprayed evenly with 100 ml to 150 ml per acre and 50 kg of water, and the mixture is mixed immediately after application. Before emergence, the cotton can be sprayed with 43% puller EC per mu 200-300 ml watered 50 kg evenly; after the cotton seedlings grow to 4 leaves, 15% can be used to stabilize the EC 50 ml or 12.5 %Gaigeeng Emulsion 50ml water 50kg for stem and leaf treatment.
When using cotton herbicides, pay attention to the following issues: First, the type of herbicide used should be suitable. The second is to pay attention to the dose should be accurate. Third, when using herbicides, it is necessary to pay attention to factors such as temperature, soil quality, and volume of water used when using the herbicide. Carefully follow the instructions. The fourth is the application of herbicides to the device.
There are two types of herbicides in the watermelon field: non-selective and selective. The former can effectively control all kinds of weeds while the latter can selectively control one or a certain type of weeds. At the peak of the first weed occurrence, the herbicides such as grafloxacin, herbicidal ether, chlorfenapyr, amphophophos, herbicide, and herbicide may be applied to the soil surface before sowing. At the peak of the weed occurrence, we should use the herbicides that can ensure the safety of watermelons, such as grass cover, stable killing, and fine grass weeds. These herbicides can be sprayed during the 2-5 leaf stage of grassy weeds and can be controlled. Weeds are safe on watermelon seedlings.
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