It is a benzoic acid herbicide with a systemic absorption effect, which has significant control effects on annual and perennial broadleaf weeds.
Dicamba application technology <br> a relatively safe for cereal crops of wheat, corn, millet, rice, dicamba disappeared by microbial rapid decomposition in the soil, usually after 24 hours with both broadleaf weeds occur Malformed curly symptoms, 15-20 days of death.
Second, dicamba is used for post-emergence spray. The agent can be quickly absorbed by the leaves, stems and roots of weeds. It is transmitted upwards and downwards through the phloem. It is concentrated in the parts of meristem and metabolic activity, which hinders the normality of plant hormones. Activities to make it die.
Third, dicamba (paraquat) can effectively control a variety of broadleaf weeds. Stem and leaf treatment was carried out in the 3-4 leaf stage of corn, and the water was subjected to stem and leaf spraying treatment with 48% of the herbicide water agent 33-40 ml/mu. Herbs against corn are safer, and correct application will not cause phytotoxicity. However, if the application is late, the dosage is too large, and the standard is not standard, it will cause phytotoxicity.
The prospect of dicamba
At present, there are few manufacturers of domestic raw drug production, and BASF has foreign production, and its market prospect is huge.
Wheatgrass mixture has been recognized by the market because it can increase the control effect and expand the herbicidal spectrum. For example, it is used in wheat field to control 30% of the broadleaf weeds, and it is used to prevent 20% of the weeds. Maiwei·Glyphosate water, 20% methylsulfonate and dicamba wettable powder for weeds such as non-cultivated water peanuts, and 14% bensulfuric acid and wheat grass water-repellent agent which have special effects on weeds in wheat fields.
The problem of medicinal licorice is that dicamba is safer for wheat and corn, and there is no phytotoxicity in correct use. There are three reasons for phytotoxicity:
First, the application is too late;
Second, the amount of medication is too large;
Third, the work is not standard:
The symptom of wheat damage is that the plant is tilted or bent, and it appears to fall down. Generally, it can return to normal within 5 to 10 days, and the deformed ear is severe or not strong. The symptom of corn damage is that the application of pre-emergence increases the root system of the corn, inhibits the growth of the shoots, and narrows the leaves: the support roots of the post-emergence application are flattened, the leaves are onion-like, and the stems are fragile.
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