Which herbicides do not harm cotton?

Cotton needs frequent weeding, and weeding inevitably requires the use of some herbicidal agents. So which herbicides do not harm cotton? Let's take a look below at the application of cotton herbicides.

1. Cotton herbicides

1. When weeding the soil in cotton fields, you can choose herbicides such as trifluralin, Lasso, acetochlor, butachlor, diuron, and dinitramine.

2. For stem and leaf weeding, you can choose herbicides such as fluazifop-butyl, quizalofop-p-ethyl, haloxyfop,禾草克 (quizalofop), paraquat, and glyphosate.

3. Before sowing cotton, you can use 48% trifluralin emulsifiable concentrate at 100 ml-150 ml per mu, mixed with 50 kg of water, and spray evenly; immediately mix into the soil after application.

4. After sowing cotton and before emergence, you can choose 43% Lasso emulsifiable concentrate at 200 ml-300 ml per mu, mixed with 50 kg of water, and spray evenly.

5. After cotton seedlings grow to 4 leaves, you can use 50 ml of 15% fluazifop-butyl emulsifiable concentrate or 50 ml of 12.5% haloxyfop emulsifiable concentrate mixed with 50 kg of water for stem and leaf treatment.

2. Methods for identifying cotton herbicides

1. Do not believe advertisements. Use the basic knowledge you have learned about various herbicides to distinguish them. For example, pendimethalin has poor control efficacy against black nightshade (黑豆颗, wild grape), but some advertisements for pendimethalin claim it specifically kills black nightshade. Regardless of whether the product is fake, this is at least exaggerated advertising, and cotton farmers are advised to stay away from it.

2. Check the label. Every pesticide label must have the three certificates; otherwise it is unqualified. The easiest thing to check is the pesticide registration certificate. Nowadays pesticides generally only have registration certificates beginning with PD. If the usage instructions, address, content, etc. queried are even slightly different, then it must be a counterfeit pesticide.

3. Look at the appearance. Look at the pesticide's batch number and production date, and see whether it has expired. If the production date is after January 1, 2018, the label must have a QR code. Scanning it with WeChat on a mobile phone will display information such as the registration certificate, content, common name, and manufacturer; otherwise it is a problematic herbicide. Check whether there is caking inside the drum (bottle) and whether there is too much sediment. Too much caking and sediment means it is a problematic herbicide and is not convenient to purchase.

Cotton herbicides need to be selected and purchased carefully; otherwise they will affect the normal growth of cotton and cause a reduction in cotton yield. However, cotton herbicides also need to be used; otherwise the weeds will become too dense and affect the normal growth of cotton.