What are the effects of glyphosate and the precautions for its use?

Glyphosate is also known as: zhencaoning, Roundup, caoganlin, lungan acid. The pure product is a non-volatile white solid with a specific gravity of 0.5, melting at about 230°C with decomposition. At 25°C its solubility in water is 1.2%; it is insoluble in common organic solvents, while its isopropylamine salt dissolves completely in water. It is non-flammable, non-explosive, and stable when stored at room temperature. It is corrosive to medium carbon steel and galvanized iron sheet (tinplate).

Precautions for use

1. Glyphosate is a non-selective herbicide. When applying it, never let it contaminate crops, so as to avoid causing phytotoxicity.

2. For perennial malignant weeds such as cogongrass (Imperata cylindrica) and purple nutsedge (Cyperus rotundus), apply the herbicide once more 1 month after the first application to achieve the desired control effect.

3. Adding an appropriate amount of diesel oil or laundry detergent to the spray solution can improve the efficacy.

4. Applying the herbicide on sunny days and at high temperatures gives good results. If it rains within 4-6 hours after spraying, re-spray.

Effective crop targets

1. Tea plant: annual weeds and perennial malignant weeds.

2. Tea plantation: annual weeds, perennial malignant weeds, weeds.

3. Spring and summer maize: inter-row weeds, weeds.

4. Spring and summer maize fields: inter-row weeds, annual and perennial weeds.

5. Winter rapeseed fields: annual weeds, perennial weeds, weeds.

6. Firebreaks, forest fire prevention belts: perennial weeds, weeds, mixed shrubs.

7. Non-cultivated land: perennial weeds, inter-row weeds, annual weeds, weeds.

8. Sugarcane: annual weeds and perennial malignant weeds, weeds.

9. Sugarcane fields: inter-row weeds, annual and perennial weeds.

10. Citrus: annual and perennial weeds, weeds.

11. Citrus trees, apple trees: weeds.

12. Citrus orchards, apple orchards: perennial weeds, inter-row weeds, annual weeds, weeds.

13. Highways, railways: inter-row weeds, annual and perennial weeds, weeds.

14. Orchards: inter-row weeds, annual weeds, perennial malignant weeds, weeds.

15. Sisal: weeds, annual weeds, perennial malignant weeds.

16. Pear orchards: inter-row weeds, weeds, annual weeds, perennial malignant weeds.

17. Cotton: inter-row weeds, weeds.

18. Cotton fields: annual and perennial weeds.

19. Rubber plantations, mulberry plantations: inter-row weeds, weeds, annual weeds, perennial malignant weeds.