How to use herbicides for onion planting?

The operation method of using herbicides in onion cultivation is as follows:

1.When onion seedlings are raised, 65 grams of 50% herbicide wettable powder mixed with 40 kg of water can be sprayed per mu for spraying.

2.Before transplanting onions, 246 percent of the onion can be sprayed with 50 kg per mu. Before transplanting, 100 ml of 48% fluorinalin EC can be used per mu.

3.Onion planting 3-leaf stage, 246 percent per mu can be sprayed with 50 kg of spray. After transplanting onions, 100 ml of 33% weeding emulsifiable concentrate can be used per mu.

4.In order to improve the effect of herbicide application on onion and onion, attention should be paid to the application of herbicides after sowing and before emergence when seedlings are raised. After transplanting, apply after the seedlings are planted and before the weeds emerge.

1. Methods for using herbicides for onion plants 1) When onion seedlings are raised, 65-75 grams of 50% promethonet wettable powder can be used to spray 40-60 kg of water per mu. Or 100 ml of 33% herbicide emulsifiable concentrate per mu, 150 ml of 48% dilometin emulsifiable concentrate per mu, and 150 grams of 50% herbicide No. 1 wettable powder per mu, respectively, spray 50 kg of water. 2) Before transplanting onions after land preparation, 66-72 ml of 24% fruit per mu, or 80-100 ml of 43% hay grass per mu, spray 50-60 kg of water respectively.

3) At the 3-4 leaf stage after onion planting, 66-72 ml of 24% fruit can be used per mu, or 80-100 ml of 43% habilin per mu can be used to spray 50-60 kg of water respectively. 4) In order to improve the effect of onion herbicide application, it should be noted that seedlings should be applied after sowing and before emergence. After transplanting, it should be applied after the seedlings are planted and before the weeds emerge.

Onions should not be used during the 2-leaf period, and should be used with caution before 3 leaves. When the temperature is low, it is applied around noon on a sunny day, and the pesticide is applied in the morning or afternoon when the temperature is high. Sandy soils should not be used for promethony.

2. Tips.

When onion seedlings are raised, 65-75 grams of 50% promethonet wettable powder can be used to spray 40-60 kg of water per mu.

When shallot seedlings are raised, 100 ml of 33% weeding emulsifiable concentrate can be used per mu, or 150 ml of 48% dilometin emulsifiable concentrate per mu, and 150 grams of 50% herbicide No. 1 wettable powder can be used per mu, respectively, 50 kg of water is sprayed.

For onion weeding, 72% metolachlor (durer) EC 100 200 ml, 33% pendimethalin (Shitianbu) EC 150 ml, 40% chloraniline EC 185 375 ml can be used before sowing and before seedling, and the furrow surface can be evenly sprayed.

Green onions can be used as a herbicide for weeding.

Pendimethalin EC, ethoxyfluorfen EC, and green onion grass are cleaned all over again. The main weeds in the green onion field are Po Po Na, Ma Tang, and Purslane.

Li, Raercai, small spinning flowers, pig suffering, dogtail grass.

These eight weeds accounted for 87% of the total number of weeds in the green onion field, and were the dominant weeds. Due to the mixture of gramineous weeds and dicotyledon weeds, chemical weeding should be adapted to local conditions, and different herbicides should be used in different growth stages of green onions.

1. Soil treatment after sowing and before emergence. Post-sowing pre-emergence chemical weeding is a ground pesticide application technique carried out after the green onion is sown and the weeds are not unearthed before the green onion is unearthed. The herbicide used prevents weeds from emerging and kills them, with little or no harm to the green onion seedlings.

33% pendimethalin EC 100 150 ml per mu can be sprayed on the ground with 45 60 kg of water, and then watered after application (first application and then watering can enhance the adsorption of the soil to the agent and reduce the damage); Or spray the soil with 75 100 grams of 50% promethonet wettable powder per mu and 45 kg of water.

2. After the green onion emerges, the stems and leaves are treated. After sowing, the pesticide treatment before seedlings is generally effective for 30 to 50 days, after which there are still some weeds breeding, therefore, green onions still need to be used again after seedlings emerge, and the stems and leaves are treated. Usually in the 3 4 leaf stage of green onions or after transplanting, spray with 33% pendimethalin EC 100 150 ml to 45 60 kg of water, or 24% ethoxyfluorfen emulsifiable concentrate 66 72 ml per mu to 45 kg of water, or 100 ml of new green onion herbicide 100 ml per mu to spray 60 kg of water, which can control 1-year-old gramineous weeds and some broad-leaved weeds in the field.

It is reported that green onion herbicides include pendimethalin, promethoxin wettable powder, ethoxyflufen emulsifiable concentrate, imidacloprid wettable powder, avermectin emulsifiable concentrate, dioxazil emulsifiable concentrate, etc. Different agents are used for different times, so it is necessary to operate according to the instructions to avoid drug damage.

When herbicides were sprayed during the transplanting period of green onions and before weed seedlings, pendimethalin single agent had a good control effect on gramineous weeds and poor control effect on broad-leaved weeds. Acetochlor single dose and meolachlor single dose have certain control effects on gramineous weeds and broad-leaved weeds, but the effect is average. The mixture of pendimethalin with ethoxyfluorfen and capryloylbromobenzonitrile can effectively control gramineous weeds and broad-leaved weeds, among which the low-dose mixture of pendimethalin and ethoxyfluoride has the best control effect on weeds. Herbicides were sprayed at the growth stage of green onions and the 3-leaf stage of weeds, and the control effect of quinoxalin single agent was better, but the control effect of broad-leaved weeds was poor. The mixture of quinoxalin and capryloyl bromobenzonitrile had poor control effect on broad-leaved weeds.

After onion colonization: After onion colonization, use ethoxyfluorfen emulsifiable concentrate or pendimethalin emulsifiable concentrate in the green onion ditch. There are 1-year-old grasses that can be used with quinoxalin EC or high-efficiency flupyromethane EC. Broadleaf weeds are generally uprooted manually.

The types of herbicides used for green onions are related to the growth period of green onions, and the commonly used methods are: 1. Soil sealing before sowing and planting: 100-120 ml mu of 48ec cable.

2. Post-sowing and pre-seedling soil treatment: 33EC field capture 100-150 ml mu. 3. After planting seedlings (more than four leaves) stem and leaf treatment, 24EC fruit 65-68 ml mu.

The types of herbicides used in green onion fields are related to the growth period of green onions, and the soil is closed before sowing and planting: 100-120 ml of 48ec Lasso.

Onion blocking herbicides, general use: acetochlor, metolachlor, pendimethalin, ethoxyfluorfen, preferably 50% metolachlor. Pendimethalin.

Ethoxyfluorfen compound, the advantages of this formula: no acetochlor, garlic grows vigorously, in addition to sealing the general small seed weeds, it can also seal the vicious weeds such as chickweed and camellia. If there are other weeds that are difficult to control, it is recommended to mix oxadone to increase the blocking effect.

<> post-seedling herbicides for green onions include 5% quinoxalin EC, high-efficiency flupyrimethalin EC, 12% clethoxone EC, 48% herbicide pine water agent, 24% ethoxyfluorfen EC, 24% ethoxyfluorfen + 10% quinoxalin, 10% quinoxalin + 30% capryloyl bromobenzonitrile + 24% ethoxyfluorfen, etc.

1. Stem and leaf treatment (post-emergence weeding).

1. If it is for the prevention and control of annual grass weeds, use 50-90ml of 5% quinoxalin emulsifiable concentrate, or 30-40ml of high-efficiency flupyromethane sensitive emulsifiable concentrate, or 30-40ml of 12% cletholate emulsifiable concentrate diluted with water and sprayed evenly (low amount is used when the weed leaf age is small, and high amount is used when the weed leaf age is large).

2. If it is for the prevention and control of annual broad-leaved weeds or sedges such as fragrant aconite, use 150-200ml of 48% herbicidal pine water agent diluted with water per mu and sprayed evenly.

3. After the 3-4 leaf stage or transplanting of green onions, use 66-72ml of 24 ethoxyfluorfen emulsifiable concentrate mixed with water and 45kg dilution spray per mu to prevent and remove annual gramineous weeds and broad-leaved weeds in the field.

4. After the green onion seedlings are slowly turned green, use 20ml of quinoxalin EC or high-efficiency flupyromethane EC diluted with water per mu to prevent and control annual grass weeds, if there are 4-6 leaves of grass in the seedbed, it should be manually pulled out in time.

5. In the green onion field, at the weed seedling stage, use 60ml of 24% ethoxyfluorfen + 45ml of 10% quinoxamine diluted spray with water per mu, or use 45ml of 10% quinoxaline + 80ml of 30% capryloyl bromobenzonitrile + 50ml of 24% ethoxyfluorfen dilution spray with water per mu to control broad-leaved weeds and gramineous weeds.

2. Soil treatment (pre-emergence weeding).

1. For plots with gramineous weeds as the dominant population, use 150-200ml of 72% metolachlor EC, or 60-80ml of 96% refined metolachlor EC, or 130-150ml of 33% pendimethalin EC diluted with water per mu before transplanting.

2. For mixed plots of gramineous weeds and broad-leaved weeds, use 150-200ml of 48% methyl grass and atrazine suspension emulsion diluted with water per mu.

3. Before sowing, use 180g of 25% promethonet wettable powder mixed with 50kg of water dilution spray per mu, or use 65-75g of 50% promethonet wettable powder mixed with water per mu to dilute spray (sandy soil and sandy loam soil should not use promethonyl).

Summary. Hello dear <>

For weeding of shallots, you can use a quinquinogen herbicide. Quinquine may leave burn spots on the green onion leaves at high temperatures, although it has no effect on the yield, but the appearance of the green onion is not good. After the emergence of shallots, you can also use 33% herbicide emulsifiable concentrate, 20% dichlor emulsifiable concentrate or 50% Dahuili wettable powder and other soil treatment herbicides, of which 33% hericide emulsifiable concentrate has the best effect.

It is best to choose the herbicide in the morning and evening time of a sunny day, if you miss the four-leaf stage, you need to use the herbicide with caution and try to pull out the weeds manually.

What herbicide to use for shallots.

Hello dear <>

For weeding of shallots, you can use a quinquinogen herbicide. At high temperatures, quinquine may leave burn spots on the green onion leaves, although it has no effect on the yield, but the appearance of the green onion is not good. After the emergence of shallots, you can also use 33% herbicides such as herbicide emulsifiable concentrate, 20% dichlor emulsifiable concentrate or 50% Dahuili wettable powder hail celebrants, among which 33% herbicide emulsifiable concentrate has the best effect.

It is best to choose the herbicide in the morning and evening time of a sunny day, if you miss the four-leaf stage, you need to use the herbicide with caution and try to pull out the weeds manually.

After the green onion seedlings emerge, there are a lot of round-leaved grasses in the ground, and what pesticides are used will not hurt the green onion seedlings.

It can be used with 5% quinoxalin EC, 24% fluoroxalyphin EC, 33% dimethyl Libi Glutinous Pentolen EC, 24% ethoxyfluorfen EC, and a new type of green onion to remove the herbicide allium grass once. When spraying pesticides, the amount of removal should be strictly controlled, and if there is 4-6 leaves of grass in the seedbed, it can be manually pulled. There are two main types of weeds that affect the growth of green onions, namely monocotyledonous weeds and broad-leaved weeds, and herbicides should be selected according to different growth periods.

Before sowing, 43% alachlor EC 200 millisson, 50% sedge long wettable powder 300 500 grams, 12% oxachlorone (Nonsit) EC 150 200 ml per mu of soil can be used, mixed with water evenly to prepare the furrow surface, sprayed with 3 6 cm of mixed soil, and then sown.

Before onion sowing, 100 200 ml of 72% metolachlor (durer) EC, 150 ml of 33% pendimethalin (Shitianbu) EC, 185 375 ml of 40% chloraniline EC can be used per mu before seedlings, and the furrow surface can be evenly sprayed.

When the stems and leaves of onion seedlings are in the onion 2 3 leaf stage and weeds germinate, 33% pendimethalin EC 100 200 ml, 40% chloraniline EC 280 ml, and 5% fast puff net EC 25 35 ml can be used to spray weed stems and leaves per mu.