What herbicides are used in peanut fields and mung bean fields? When should I take the medicine? What are the points for attention?

Weeds have a great impact on the growth of crops. Chemical herbicides have the characteristics of fast effect, labor-saving and time-saving. What herbicides are used in peanut fields and mung bean fields? When should I take the medicine? What are the points for attention?

Herbicide in peanut field

At present, there are common weeds in peanut fields, such as Magnolia mandshurica, Euphorbia angustifolia, Setaria angustifolia, Chenopodium quinoa, Portulaca oleracea, iron amaranth, Xanthium sibiricum, Abutilon theophrasti, Camellia oleifera, Cyperus angustifolia and so on.

At present, there are many kinds of herbicides in peanut fields on the market. Find a few common formulations, tell you the pros and cons, and then choose them according to the weeds.

1. Quizalofop + ethyl carboxyfluoxane: the price is very cheap, but the weeds are easy to rebound, and it has no effect on Cyperus roxburghii.

2. Quizalofop + fluosulfonate: the price is more expensive than the first one, but it is not easy to rebound, and it is also ineffective for Rhizoma Cyperi. It should be noted here that the data reaction, the use of this formula in the north, is easy to cause drug damage, and the south is relatively stable.

3. Quizalofop + bentazon: the price is higher than the above two, mainly hit Rhizoma Cyperi, but the quantity should be increased appropriately, there will be no residue, and the effect on other weeds is general.

4. Quizalofop + bentazon + trifluorocarboxylate: ternary compound, first of all, the effect is better than the above binary compound, and it has good effect on common weeds and aconite in peanut field, and there is no residue. The only difficulty is the price, which is 2-3 times more expensive than the commonly used one.

5. Quizalofop + bentazon + fluosulfen: it is also ternary compound and has a good effect on weed control, but compared with point 4, this formula can also be used in soybeans, that is to say, peanuts and soybeans can be used as herbicides. The price is not low.

After talking about the formula and how to choose the medicine, let's talk about some precautions or methods when administering the medicine:

The main results are as follows: 1. The best application period of peanut herbicide is the 2-4 leaf stage of weeds, the weeds are too small, some of them grow in the later stage, the weeds are too large, the resistance is high, and the dead weeds are not complete.

2, do not give medicine in the high temperature period at noon, two reasons, one is the evaporation is too fast, the effect is not good, the other is to prevent heatstroke, their own safety problems, generally choose before 10:00 in the morning, after 16:00 to take medicine.

3. When dispensing, remember to dilute the medicine twice. The specific method: pour the medicine into the bucket (or in the medicine car), first add part of the water to dilute, and then add a large amount of water. The purpose of this is to make the liquid more uniform, so that there will not be the same piece of land. One piece is harmful to the drug due to a large amount of medicine, and the other piece of grass does not die.

4. When there is stagnant water in the field and Rain Water and dew on peanut leaves, do not hit herbicides. Why? Afraid of drug damage, when there is water on peanut leaves, herbicides are sprayed to form large water droplets, and then flow into the heart leaves, at this time, the concentration of herbicides in heart leaves is too high, which is very easy to cause drug damage.

5. Don't hit herbicide when the seedling is weak. What is the seedling weakness? The plant is short, yellowing and wilting, which may be caused by seeds, insect pests, diseases, etc. No matter what the reason, do not hit the herbicide at this time, because the peanut seedling itself is weak, once the herbicide is not used well, the drug damage is inevitable.

6. Pay attention to the drift phenomenon, for example, corn, vegetables, sesame and other crops are planted nearby. If you apply medicine in windy weather, the wind blows the liquid to the crops next door, resulting in drug damage to the crops next door.

Herbicide in mung bean field

Barnyardgrass, Equisetum equisetifolia, amaranth, quinoa and iron amaranth are the main weeds in mung bean field, which seriously affect the yield and quality of mung bean. The application of chemical herbicides has become the main measure to control weeds in mung bean field. According to the different application period, chemical weeding in mung bean field can be divided into soil treatment before sowing, soil treatment before seedling after sowing and stem and leaf treatment after seedling.

1. Soil treatment before sowing before sowing mung beans, 48% trifluralin was used per mu at 70,100ml and 30kg / mu for water. Ridges were formed after comprehensive and uniform spraying of the soil surface, and the seeds were sown after the chemical was fully diffused in the soil every 5 to 7 days.

2. After sowing, the soil before seedling treatment was sprayed evenly on the soil surface with 48% alachlor (Rasol) EC 20000ml per mu and 30kg 45kg of water before sowing. Or with 96% Metolachlor EC 60ml / mu, 30kg / mu of water, sprayed evenly on the soil surface before seeding. Under the unfavorable conditions of dry weather, it is better to mix the soil shallowly after spraying to ensure the efficacy.

3. Post-seedling stem and leaf treatment of ① imidazoethonicotinic acid (Puster, imidaclopyr), which can be used to control Gramineae weeds and 1-year-old broad-leaf weeds in mung bean field. 5% imidazoethonicotinic acid water agent, 100ml / mu, 30kg / mu, is sprayed evenly in 2 compound leaves stage of mung bean and 2-leaf stage of weeds. It should be noted that the residual period of imidazoethonicotinic acid is long, which may have an impact on the next crop, and the safety of the next crop should be considered when using it. ② bentazon can be used to control broad-leaf weeds in mung bean field. 48% bentazone water agent is 100ml / mu and 30kg / mu. It is sprayed evenly in 3 compound leaf stage of mung bean and 3 ~ 5 leaf stage of broad leaf weed. ③ can be used to control broad-leaved weeds in mung bean field. Use 25% fluorosulfen (Huwei) water agent 60ml / mu, 30 liters of water, spray evenly in 1 / 2 compound leaf stage after mung bean seedling and 2 / 4 leaf stage of broadleaf grass. When using fluoxifen (Huwei), the dosage should be less than 70 milliliters per mu, otherwise drug damage may occur.

There are many control agents for Gramineae weeds, such as trimethoprim (Najiaojing), quizalofop (fine grass gram), clenbufenone (clenazone), etc. can be used to control Gramineae weeds after mung bean seedlings. 12.5% alkenofop (nacrethrin) EC 60ml / mu, or 5% quizalofop (refined grass) 60ml / mu can be selected, and 30 kg of water is sprayed evenly in 2 compound leaves of mung bean and 3 leaves of barnyardgrass. It can also choose 15% fluorocarbamate per mu (Jingshengmaode) 30mm 45ml or 12% enoxone (Shoulotong) 50ml 60ml, spray 30kg of water and spray evenly in the 3-leaf stage of Gramineae weeds, which has a good release effect on Gramineae weeds.

Mixed use of pesticides, in order to effectively control grass weeds and broad-leaved weeds, you can choose 25% fluorosulfenesulfen (Huwei) water agent + 15% trifluorocarboxylate (weed burning) EC, 21.4% trifluorocarboxylic ether (weed burning) EC + 15% ethyl carboxylate (broad hoe) EC + 15% pyrrolofop EC. It can effectively control Gramineae weeds and broad-leaved weeds, and is safe for crops.

Stem and leaf treatment is the most commonly used chemical method to control weeds in mung bean field. Attention should be paid to the rotation and mixed use of herbicides in production practice in order to delay the emergence and development of weed resistance and achieve the best control effect.

The use of herbicides can effectively prevent the harm of weeds. Therefore, when using herbicides, we must have a good grasp of the concentration and the period of application, and use them in strict accordance with the dosage specified in the instructions.