Optimal Herbicide Combinations with Butachlor for Weed Control in Rice Fields

Optimal Herbicide Combinations with Butachlor for Weed Control in Rice Fields

Butachlor is a common herbicide used in rice fields to control weeds. To expand the weed control spectrum and enhance effectiveness, butachlor is often used in combination with other herbicides. So, what are the best herbicide combinations with butachlor for weed control? Let's find out.

1. Butachlor + Cyanofenphos

For controlling barnyard grass, goosegrass, and various other weeds on ridges, butachlor can be used alone. If there are also Echinochloa crus-galli in the fields, a combination of butachlor and cyanofenphos is recommended. For japonica rice cultivation, dichlormid + butachlor can be used.

2. Butachlor + Metolachlor

Depending on the previous crop and the occurrence of grassy weeds, choose either a single application (post-emergence) or two applications (pre-emergence and post-emergence). It is advisable to opt for a single application whenever possible. For example, during the one-leaf to one-tiller stage, mix metolachlor and butachlor for spraying to both weed and promote tillering.

3. Butachlor + Dichloroquinoline Acid

For controlling barnyard grass, goosegrass, and Chenopodium album on ridges, a combination of butachlor and dichloroquinoline acid is effective, especially for Chenopodium album.

4. Butachlor + Quinclorac

Mainly targeting barnyard grass, goosegrass, and broad-leaved weeds in the ridges, especially where there is a lot of hollow barnyard grass, it is essential to use butachlor in combination with quinclorac.

5. Butachlor + Pyrazosulfuron-ethyl

Combining butachlor with pyrazosulfuron-ethyl effectively controls Echinochloa crus-galli, Cyperus iria, and broad-leaved weeds in rice fields.

Considerations for Using Butachlor

  • Ensure the temperature is above 15°C for effective application; lower temperatures reduce herbicidal efficacy.

  • Butachlor needs to be diluted twice before use, and adjuvants should be mixed immediately before application.

  • If it rains within 6 hours after application, it may affect the herbicidal effect, necessitating a re-spraying.

In conclusion, the above outlines the best herbicide combinations with butachlor for effective weed control in rice fields. Butachlor is safest to use after the rice reaches the three-leaf to one-tiller stage, and it can also be combined with other herbicides for enhanced effectiveness.

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