What herbicide does Salvia miltiorrhiza use to weed during its growth period?

It is recommended to use quizalofop-ethyl.

1. Introduction: quizalofop-p-ethyl removes the inactive L and the remaining active isomer (R) from the two optical isomers, so it has the same action mechanism and weeding spectrum as quizalofop-p-ethyl. However, because it improves the absorbability and fluidity of plants, it has fast action speed and stable efficacy, and is not easily affected by environmental conditions such as rain, air temperature and humidity.

2. Mechanism of action: The liquid medicine is absorbed by the stems and leaves of weeds, conducts up and down in plants, accumulates in meristems at the top and between layers, and inhibits the synthesis of cell fatty acids, thus causing weeds to die.

Quizalofop-p-ethyl is a broad-spectrum, high-efficiency, systemic and conductive post-emergence herbicide for leguminous Chinese herbal medicines, which can control annual gramineous weeds and broad-leaved weeds in leguminous Chinese herbal medicine fields, overcoming the shortcoming that other post-emergence herbicides only control gramineous weeds but not broad-leaved weeds, and is especially suitable for weeding in Chinese herbal medicine bases with high planting density and difficult manual weeding, saving labor and effort. Greatly improve economic benefits.

Extended data:

Quizalofop-p-ethyl is a chemical substance with the molecular formula of C 17H 13ClN2O4. According to the classification standard of pesticide toxicity in China, quizalofop-p-ethyl belongs to low toxicity herbicide. Its light yellow crystal is uniform, the total ester content is higher than 95%, and the R body is higher than 90%.

Cloroxypyr is an improved product after removing inactive optical isomers in the process of synthesizing Cloroxypyr. Its action mechanism and weed control spectrum are similar to those of Gramoxone. It is absorbed by the stems and leaves of weeds, passed up and down in plants, accumulated in apical and middle meristems, inhibited the synthesis of fatty acids in cells, and caused weeds to die.

Jingcaoke is a new dry field stem and leaf treatment agent with high selectivity, which has high selectivity between gramineous weeds and dicotyledonous crops and has good control effect on gramineous weeds in broad-leaved crops. Jingcaoke has faster action speed and more stable efficacy, and is not easily affected by environmental conditions such as rain, temperature and humidity.

Used to control gramineous weeds in 3-5 leaf stage. Use 50-70 ml of 5% quizalofop-ethyl EC per mu to control annual gramineous weeds. (Spraying stems and leaves evenly with 30-40 kilograms of water) When soil moisture and air humidity are high, it is beneficial for weeds to absorb and conduct fine grass.

Precautions for use:

1. Wear a mask and rubber gloves when operating. After the operation, wash your face, hands and feet with soap and rinse your mouth with clear water.

2. Take a lot of water by mistake, spit out the liquid medicine, and immediately find a doctor to take rescue measures after being quiet.

3. Weedy plants turn yellow and stop growing within 2 days after surface application. After application, young leaves and primary tissues on nodes withered within 5-7 days, and plants died within 14 days.

References:

Baidu encyclopedia-quizalofop-ethyl