When does the corn hit the herbicide

Weeding crops is a common work in agricultural production, so when does corn use herbicides? What kind of medicine can I take?

When does the corn hit the herbicide?

Herbicides should be used to kill unsprouted weeds before planting corn, and herbicides can be used to avoid drug damage when corn is in the period of 2-5 leaves. In addition, the best time of the day to hit the herbicide is after 5pm, to avoid morning dew when medication, to prevent drug damage.

What medicaments can be used for corn weeding?

1. Oxazolidone

2-4 leaf stage after maize seedling and 2-5 leaf stage of annual weed. It can effectively control annual monocotyledon and dicotyledonous weeds. It is safe for corn, sweet corn and waxy corn. It has good compatible activity with atrazine, and the addition of atrazine can improve the activity against grass and duckweed, and increase the speed of action.

two。 Oxazolidone

It is insensitive to corn varieties, safe, has a good effect on broad-leaved weeds, and the weeding speed is fast. It has excellent control effect on weeds resistant to sulfonylurea herbicides in areas where sulfonylurea herbicides have been used for a long time, and is safe for subsequent crops. The mixture of nicosulfuron and nicosulfuron after weeding in corn field can expand the herbicide spectrum and increase the efficiency.

3. Chlorofluoropyloxyacetic acid

It has good internal absorption, strong selectivity and remarkable control effect, and it is safe for corn. The targets are perennial broad-leaved weeds, such as Spirulina officinalis and water peanut, which are difficult to control. The safety of corn is high, and it is difficult to promote the use of single dose. It is suggested that the mixture of nicosulfuron and nicosulfuron can expand the herbicide spectrum and improve the efficacy.

4. Nicosulfuron

Suitable for corn, including horse tooth type, half horse tooth type, hard grain type. It is mainly used to control annual Gramineae weeds and some broad-leaf weeds. It is an efficient herbicide for Gramineae weeds among sulfonylurea herbicides at present. The advantages are: wide herbicide spectrum, good and stable effect, weeding and root control, low requirements for soil and climate, long application period, and safety for known corn varieties.

In addition, wheat grass, octanoylbromobenzonitrile, diquat, glyphosate ammonium salt, glyphosate potassium salt, glyphosate isopropylamine salt and so on can control corn weeds. However, different agents are aimed at different weeds, so we should pay attention to identify them.