Herbicide Bispyribac 96%TC Cas 125401-75-4

Bispyribac is an inhibitor of side-chain amino acid synthesis, that is, an inhibitor of acetyl lactase synthesis (ALS). As a broad-spectrum herbicide, it can be quickly absorbed through leaves and roots, and quickly transmitted to the whole plant. This product is suitable for annual and perennial rice in direct-seeding fields and transplanted fields.

CasNo: 125401-75-4

Formula: C19H18N4O8

Physical State:powder

Purity(%): 96%

Application: Agricultura

Color: White

Formulation:10%SE,20%WP and used to manufacturer more formulated product

  • Category: Herbicide
  • Tags:
      Herbicide,Bispyribac,Cas 125401-75-4
Bispyribac is a side chain amino acid synthesis inhibitor, that is, an acetyl lactase (ALS) inhibitor, which prevents cell division by inhibiting the biosynthesis of essential amino acids valine and isoleucine, thereby stopping the plant grow. It is a broad-spectrum herbicide, absorbed quickly through leaves and roots, and quickly transmitted to the whole plant. This product is used to control annual and perennial broad-leaved weeds and barnyard grass in direct-seeded rice fields and transplanted fields. The application rate is 15- 45g/ha.

Features of Bispyribac

Bispyribac ether is effective for older barnyardgrass, paspalum (red mixed root), and rice Li Dihe (youcao), and has a certain control effect on some broad-leaved grasses (Polygonum, Cormina, and Water Peanut). The effect of antagonistic green barnyardgrass is average.

Bispyribac is relatively safe to indica rice, but more sensitive to japonica and glutinous rice. Some varieties of rice may experience slight or severe chlorosis and whitening, but usually recover within 7-10 days, and have no effect on the final yield of rice. There are strict requirements on the application time of bispyribac, which is required to be used after 3 leaves and 1 heart for indica rice for direct-seeding rice, and after 4 leaves and 1 heart for japonica rice, and it is prohibited to use at the booting stage of rice.

Bispyribac ether requires a temperature between 25 and 35°C. When the temperature is lower than 15°C, the effect is not ideal, and it may cause phytotoxicity.

20% of bispyribac is absorbed by roots and 80% is absorbed by stems and leaves, so bispyribac does not have high requirements for backwater and water retention, but timely backwater and water retention are conducive to the death of weeds, and at the same time reduce the adverse effects on rice

7-10 days for bispyribac, but if the temperature is lower than 20°C, it will take about 15 days for weeds to die

The effect of 40% bispyribac ether SC on older barnyardgrass is particularly outstanding, and the longer the application time is delayed, the safer it is for rice, and the dosage does not need to be doubled. For large rice growers, choosing 40% bispyribac as a chemical weed control in paddy fields has a great advantage in cost. Generally, the cost can be saved by more than 10 yuan per mu.

The scope of use of bispyribac

Bispyribac belongs to the class of pyrimidine salicylic acid herbicides, also known as bispyribac. It is a highly active acetolactate synthase (ALS) inhibitor, which can be quickly absorbed by the stems and leaves of weeds after application, and transmitted to the whole plant, inhibiting the growth of plant meristems, thereby killing weeds. Efficient, broad-spectrum, extremely low dosage. It can effectively control barnyardgrass and other gramineous weeds in rice fields, and also control most broad-leaved weeds, some sedge weeds and barnyardgrass resistant to other herbicides, such as barnyardgrass, paspalum, rice plum Grass grass, crabgrass, bentgrass, kanmai, sweetgrass, wolfba grass, special-shaped sedge, sunshine scoop grass, broken rice sedge, firefly rush, Japanese grass, flat stalk grass, duck Tongue grass, Yujiuhua, wild arrowhead mushroom, Alisma, eye spinach, Gujing grass, beef felt, festival vegetable, Moshang vegetable, water bamboo leaves, hollow lotus seedlings, flower rush and other common species in rice fields Part weed. It has special effects on older barnyardgrass and paspalum, and can kill barnyardgrass at the 1st to 7th leaf stage.

It is used to control grass weeds and broad-leaved weeds such as barnyardgrass in paddy fields, and can be used in seedling fields, direct seeding fields, seedling transplanting fields and throwing seedling fields

Package of bispyribac

We also supply some accessories to add more functions for end-users' convenience, which also help our distributors and business partners sell our products in their area. Any special package requirements, please don't be hesitate to tell us.

Large Package:

Solid: 25Kg UN approved fiber drums with LDPE liner;

Liquid: 200L UN approved HDPE or iron drums.

Retail Package:

Solid: 10g;50g;100g;500g;1kg;5kg;25kg

Suppliers of bispyribac

Agripestcide is a professional pesticide chemical manufacturer, providing high quality and effective herbicide bispyribac with high quality and good service. If you are looking for Herbicide Bispyribac, please feel free to contact us for latest price.





Molecular Weight




Melting Point


Boiling Point

686.4±65.0 °C(Predicted)

Physical State







25kg Cardboard barrel




Ventilation low temperature drying




2 years

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