What herbicide works well for weed control? Recommendations for six common herbicide varieties

In summer and autumn, the hot and rainy climate is very favorable for the growth of field weeds, and this is also the key period for weed control. For growers, it is necessary to learn to distinguish weed types and scientifically select herbicide varieties; improper use can easily cause phytotoxicity. In fact, herbicides can be classified according to different herbicidal properties, and the key points for use differ greatly among different classifications. So what herbicide works well for weed control? These six common herbicides may be able to help everyone.

1. Acetochlor

Mainly used to control various annual grass weeds and some broadleaf weeds, and is ineffective against perennial weeds.

Applicable crops: soybean, peanut, corn, cotton, rapeseed, rice, potato, etc.

Precautions: ① When used in sandy soil with low organic matter content, a low dose should be applied; ② It must never be used in rice seedling fields; ③ Cucumber, melon, spinach, Chinese chive, and sorghum are sensitive to acetochlor, so use them with caution or use less.

2. Diuron

Mainly used to control most annual and perennial weeds, such as crabgrass, goosegrass, foxtail, upland barnyardgrass, lambsquarters, nutsedge, etc.

Applicable crops: cotton, sugarcane, soybean, peanut, corn, cucumber, rice, etc.

Precautions: ① It is prohibited in wheat fields; it has a strong contact-killing effect on cotton leaves, so application must be made to the soil surface, and it should not be applied after cotton seedlings emerge; ② The dosage in sandy soil is less than in clay soil, and it should not be applied in sandy, water-leaking fields.

3. Glyphosate

It can control almost all annual and perennial weeds, and has outstanding control efficacy against common weeds such as crabgrass, Amaranthus tricolor, redroot pigweed, nutsedge, etc.

Applicable crops: various orchards, corn, sugarcane, etc.

Precautions: ① Glyphosate is a non-selective herbicide, so when applying it, never contaminate crops to avoid phytotoxicity; ② Do not use turbid river water or water with relatively high hardness to prepare the spray solution; ③ Applying the pesticide on sunny days and at high temperatures gives good results; if it rains within 4-6 hours after spraying, it should be re-sprayed.

4. Metolachlor

It has outstanding efficacy against annual grass weeds such as moleplant, goosegrass, barnyardgrass, foxtail, hard grass, and bluegrass. It has obvious efficacy against broadleaf weeds such as Chenopodium, black nightshade, dodder, and hairy vetch.

Applicable crops: rice, soybean, sugarcane, peanut, corn, etc.

Precautions: ① High soil moisture gives good control efficacy; ② It has poor efficacy against some weeds such as purslane, Amaranthus tricolor, cleavers, dayflower, and horsetail.

5. Fomesafen

It can control velvetleaf, Polygonum lapathifolium, Amaranthus tricolor, redroot pigweed, common ragweed, beggarticks, field bindweed, shepherd's purse, Chenopodium, split-leaf morning glory, etc.

Applicable crops: soybean, mung bean, peanut, etc.

Precautions: ① This pesticide has a relatively long residual period in soil and will not become passivated in soil; ② If the dosage is too large, it will cause phytotoxicity to subsequent crops such as cabbage, sorghum, corn, wheat, sugar beet, and flax.

6. 2,4-D butyl ester

It has good control efficacy against Chenopodium, Polygonum, redroot pigweed, Amaranthus tricolor, purslane, horsetail, sowthistle, small thistle, and cocklebur.

Applicable crops: wheat, corn, sorghum, millet, rice, etc.

Precautions: ① For controlling weeds in wheat fields, the suitable application periods are the two stages of wheat differentiation when the growing cone elongates and from floret differentiation to pistil and stamen differentiation; ② Environmental conditions have a great impact on the herbicidal effect and safety of the pesticide. Generally, when the temperature is high, light is strong, and air and soil humidity are high, phytotoxicity is less likely to occur, and the pesticide efficacy can be brought into play; ③ This pesticide is highly volatile, so the treated field should be at a certain distance from sensitive fields.



The above are recommendations for six common herbicides. In addition to the variety of the pesticide itself, factors affecting the weed control effect also include temperature, pesticide concentration, and application method. Therefore, before using the pesticide, these factors should also be taken into consideration.

For wonderful pictures and texts and popular comments about herbicides for weed control, you may be interested in the following recommended content from Nongxun Network. Welcome to read.

Agricultural products you may be interested in: National high-quality herbicide supply