Description

Tribenuron-methyl herbicide’s past and present life

Tribenuron-methyl is a sulfonylurea wheat herbicide developed and marketed by an American company in the 1980s. It was registered in China in 1995 and the patent expired in June 2001.

From the beginning of bensulfuron on the market. It has taken the wheat herbicide market by storm with its excellent weeding effect. Now it has found its precise positioning in the form of “enhancement agent”. For having been around for over 20 years. And for bensulfuron, which has always been indispensable in wheat field herbicides, its value is self-evident.

Up to now, bensulfuron-methyl still has 277 pesticide registration certificates from the Ministry of Agriculture and Rural Affairs of China, including 208 single doses (including original drugs) and 69 mixed doses.

The registered dosage forms are mainly 75% water-dispersible granules and 10% wettable powder. There are also small amounts of dry suspensions and soluble powders.

The efficacy and application of Tribenuron-methyl

Bensulfuron-methyl is a sulfonylurea herbicide. Has strong systemic conductivity. After the weeds come into contact with the liquid, they can be conducted downward and upward through the stems and leaves. Weeds stop growing immediately after application. However, the complete death of the weeds takes a long time (7 days for the symptoms of pesticide damage to appear, 15-20 days for the growth points to begin to necrotic and dry, and 25 days for complete death).

Bensulfuron-methyl is one of the slow-acting herbicides. However, slow-acting herbicides often have one characteristic, which is that they kill weeds more thoroughly.

However, the shortcomings of bensulfuron-methyl’s slow onset of action are made up for in the herbicide compounding.

Such as bensulfuron+trimethrin, bensulfuron+difensufen+trimethafil, bensulfuron+dimethyltetrachlor+flupyr, etc.

The blended bensulfuron-methyl not only overcomes the shortcoming of slow effect, but also improves the weeding effect.

Weeds that are sensitive to Tribenuron-methyl but have developed strong resistance. Such as Bo Niang Artemisia, shepherd’s purse, broken rice shepherd’s purse, Mai Jia Gong, etc. After mixing, the control of sensitive weeds can effectively improve. At the same time, it can also assist in enhancing the eradication effect of flupyr and mefenacet on weeds such as pigweed and chickweed.

However, Tribenuron-methyl herbicide is ineffective against acanthus, bindweed, rhizome and gramineous wheat field weeds. Mixing it with other herbicides will not achieve synergistic effects.

It should be that although bensulfuron is relatively cheap. However, it is still not recommend to deliberately increase the amount of land used per mu. Farmers need to be aware of one fact. The current role of bensulfuron is not the leading role among herbicides, but a supporting role that plays a synergistic role.

Therefore, blindly increasing the dosage of bensulfuron will not add much color to wheat field weeding. On the contrary, it will also increase the bensulfuron-furon residue.

Bensulfuron-furon residue is the most easily ignored problem by growers. Many people believe that although the residual period of bensulfuron-furon is very long, it is only about 60 days, and wheat will not mature until early June in the Gregorian calendar. Therefore, the interval from the application of pesticides in February to the planting of the next crop in about early June is close to 4 months.

For broadleaf cash crops that are relatively sensitive to bensulfuron-furon.