Recently, there have always been planters using erroneous drugs to cause phytotoxicity. Some growers used dimethyltetrachloride on cotton. It was a very good cotton. After the wrong medicine, all the cotton was smashed and squatted on the ground. Heartache.

Dimethyltetrachloro is a phenoxyacetic acid-selective systemic selective hormone-type herbicide . The main dosage forms on the market are 70% sodium salt raw powder, 20% sodium salt solution, and a compounding agent containing different contents of the component. It can destroy the transgenic tissue of dicotyledonous plants, disturbing growth and development, twisting stems and leaves, and swelling or thickening of stem base.

Methyltetrachloride is most afraid of low temperature and dosage, because metformin is a hormonal herbicide. Excessive use, or before the 4th leaf stage of rice and after the jointing, it is easy to produce phytotoxicity, resulting in chlorosis and yellowing of the leaves of the seedlings, the tuberculosis of the new leaves, the difficulty of extracting the ear curls, and the deformity of the ear.

Can Daojie mix with dimethyl tetrachloride?

2 A 4 chlorine should be used after the 5 leaf stage of rice, or 5-8 leaf stage, as long as it is ready to use in this period.

What are the effects of metformin on the crops?

Cruciferous vegetables are quite influential, such as rapeseed, Chinese cabbage, cotton can not use metformin, and 2,4-D, 2,4-butyl butyrate, 2,4-D butyl ester and other weeding Agents, they are very sensitive to cotton. Once misused, phytotoxicity will inevitably occur and irreversible. Low concentration will cause cotton to stop growing; higher concentration of phytotoxicity will cause all seedlings to die.

The re-spray of metformin on rice is easy to cause phytotoxicity

Rice tillers open, and secondary roots form a papillary group that does not lie at the base. The field has been used for more than 20 days, and the use of 50-60 grams of pure sodium dimethyltetrachloride is used in the area. If the old rice is 40-50 grams per mu, as long as it is not re-sprayed, there will be no such phytotoxicity.

The large dose of transplanted field was treated with sodium dimethyltetrachloride. The roots were papillary, the stems were twisted, and the joints were knotted in advance. The roots of the stems had papillary deformities. Why does it cause abnormal development of early jointing, and long roots on the stem section. Our rice in the same period has not been jointed yet! It is currently at the end of the tillering stage. On the right side of the figure is the same period of normal development of rice.

Symptoms of dimethyltetrachlorodimethylamine salt and methicone

Methyltetrachlorodimethylamine salt is used in rice at higher doses or in sandy mountain fields, and the symptoms are similar to those of metformin. The plant is flat, the tillers are scattered, the old leaves are easy to fall off by hand, and the old roots are dead and new roots, easy to dial.

Once the pesticide is used improperly, it is very likely that the hard work of the year will be drowned. It must be prudent to fight drugs. If you find a phytotoxicity, first find out what medicine is the medicinal remedy, and contact the technician as soon as possible to see if it can be remedied as soon as possible.

More pesticide knowledge , please pay attention to China Pesticide Network

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