Introduction of common herbicides in agriculture

Farmers all know that herbicides are inevitably used in the production of crops, and there are many varieties of herbicides, which have a good control effect on different weeds, and herbicides can help reduce the consumption of nutrients and increase the yield of crops. What are the common herbicides in agriculture? Let's get to know it next.

1. Pendimethalin

This is a selective herbicide for dry field crops, which is now widely used in the weeding of corn, soybean, peanuts, cotton, vegetables and other crops. It has wide applicability and can be directly sprayed to prevent the growth of weed seedlings. It can control grass weeds such as barnyardgrass, satang, Setaria przewalskii, Saxifraga, Portulaca oleracea and other grasses, but the effect is not good if perennial weeds are used. Generally, topsoil spray is applied before emergence after sowing.

2. Picosulfuron

The internal absorption and transmission herbicide, after being absorbed by weeds, leads to the chronic death of weeds, and has no effect on rice, has stable efficacy and high safety, and lasts for 25 to 35 days. Suitable for rice seedling field, direct seeding field and transplanting field. It has a good control effect on annual broad-leaved weeds such as water sedge, fluorin, Hedyotis diffusa, water celery, festival vegetable, wild sagittaria, Euphorbia angustifolia, duckweed and so on. In most cases, it is mixed with the soil.

3. Prochlor

The special herbicide in paddy field is safe to rice and has a wide herbicide spectrum. Weed seeds absorb chemicals in the process of germination, but the root absorption is poor. It can only be treated with soil before budding. When using, we should pay attention to the use of safety agent, which is effective to control annual Gramineae weeds such as barnyardgrass, barnyard barnyard, barnyard barnyard, barnyard grass, cow felt, narrow leaf alisma, water amaranth and so on. It is generally used after rice is sown.

4. Grass enemies

The internal absorption of rice field herbicides can be absorbed by the roots and buds of weeds. And the applicable period is wide. But the spectrum of killing grass is narrow. It is suitable for controlling paspalum grass, cattle hair grass, special-shaped sedge and so on in paddy field. When the rice seedlings grow to the 3-leaf stage, sprinkle with 100-150 ml EC per mu, if the barnyardgrass is 4-5 leaf stage, need to increase the dosage.

To sum up, this is the end of the introduction of common herbicides in agriculture. If you want to use herbicides to control weeds, you need to choose herbicides correctly according to weeds in order to achieve good control results.

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