All the herbicide mixtures on the market are here! It's worth collecting!

Many farmers do not know much about the special herbicides in the corn field, or even what products they have. This article collects the herbicide formulations in the corn field on the market, and all the herbicide mixtures in the corn field are here! It's worth collecting!

I. the mixture of ethyl and atrazine

Although atrazine alone has a good effect on controlling weeds in corn field, there are still many problems.

The main results are as follows: (1) atrazine has high water solubility and leaching solubility, so it is easy to pollute groundwater.

(2) it is possible to cause drug damage to the following wheat and poor control effect to Magnolia paniculata.

By using the mixture of atrazine and atrazine, the herbicide spectrum can be expanded and the control effect can be improved by reducing the single atrazine content. The total content of the compound preparation of Acetochlor and atrazine (or isopropachlor and atrazine) is 40%, 60%, and the dosage is 125-450 ml / mu. The function is closed in front of maize seedlings and can control weeds below 3 leaves under humid conditions.

The better mixture ratio is 20% Acetochlor + 20% atrazine, 200-250 g / mu. 18% isopropachlor + 23% atrazine, 200-250 g / mu, this ratio is the best mixture of the two, and the comprehensive effect is the best. The main sealing agents in corn field were Acetochlor + atrazine, isopropachlor + atrazine, butachlor + atrazine, blocking activity decreased from top to bottom, and vice versa. Relatively speaking, butachlor + atrazine is the safest of the three formulations.

In addition, A ·B ·atrazine and cyanide atrazine are not the mainstream formula (note: the herbicide containing cyanazine in corn field is easy to cause drug damage after the 4-leaf stage of corn, stagnant water in corn field, the drug damage is more serious). When using it, it is best to choose the formula with high atrazine content and low amide content, which has better herbicide effect, high safety and long sealing time.

The following table is an analysis table of the advantages and disadvantages of different ratios of ethyl and atrazine:

Proportion

Advantages

Shortcoming

Atrazine (1:1)

The control of annual weeds is safe for the following crops and the cost is low.

The effect on perennial weeds is poor and is greatly affected by soil moisture.

Atrazine (1:2)

The control of annual weeds is relatively less affected by soil moisture and the cost is low.

The effect on perennial weeds is poor, and drug damage is easy to occur in the following crop.

Atrazine (2:1)

The utility model has the advantages of good control of annual weeds, good sealing effect, resistance to Rain Water, safety for subsequent crops, and low cost.

It has poor effect on perennial weeds and is greatly affected by soil moisture.

Atrazine (2:3)

Control annual weeds, good sealing effect, resistant to Rain Water.

The effect on perennial weeds is poor, which may reduce the safety of wheat in the next crop in especially dry years.

1. Acetochlor and atrazine 1 ∶ 1 mixture:

This kind of herbicide mixture is the first to produce Yi A mixture and herbicide suspension, which can be used to control annual Gramineae weeds and broad-leaved weeds before sprouting and after corn seedlings, and it is safe for corn and subsequent crops.

Similar products include butachlor + Acetochlor + atrazine, butachlor + atrazine, alachlor + Acetochlor + atrazine, Metolachlor + atrazine, Metolachlor + atrazine and so on.

two。 Acetochlor and atrazine 2 ∶ 3 mixture:

This herbicide mixture can be used to control annual Gramineae weeds and broad-leaved weeds in corn field before sprouting and early after maize seedlings, and it is safe for corn.

The safety of subsequent wheat may be reduced in particularly dry years. The varieties with similar properties are chlorotoluron + Acetochlor + atrazine mixture, which can greatly improve the safety of subsequent wheat, but can not be used after corn seedlings.

3. The action characteristics of the mixture are as follows:

The main results are as follows: (1) soil closure treatment can effectively control a variety of annual Gramineae weeds and broad-leaved weeds before sprouting or early stage after maize sowing.

(2) it can be absorbed by the roots, buds, stems and leaves of weeds, so it is suitable for closed weeding in many kinds of fields, high wheat stubble and high dry land.

(3) Control object: it can control many kinds of annual Gramineae weeds and broad-leaved weeds in corn field.

Outstanding effect (more than 90%) weeds

Horse tang, barnyard grass, thrush grass, abutilon, quinoa, amaranth, amaranth

The effect is average (70-90%) weeds

Xanthium sibiricum, Solanum nigrum, duckfoot grass, green grass, dogtail grass, scutellaria, purslane

Poor effect (50-70%) weeds

Morning glory

Poor effect (less than 50%) or ineffective weeds

Perennial weeds such as Tian Xuan Hua, Cyperus roxburghii and so on

2. Metolachlor + terbutyine

The combined effect of the mixture on four weeds such as quinoa, iron amaranth, paspalum and dogtail grass was additive, and the best ratio was 37.5-62.5, which was safe to corn.

For spring corn, soil spray before seedling after sowing to control annual weeds, the dosage is 1400-1800 g / ha.

Third, the mixture of tobacco and atrazine

When the ratio of nicosulfuron to atrazine was 1: 12:00, the effect was the best, and corn was the safest. When the ratio of atrazine to nicosulfuron was less than 6: 1, corn could not completely overcome the drug damage of nicosulfuron.

There are many mixtures of this product on the market, such as 3% nicosulfuron + 17% Mel 20% atrazine, the specification is about 100 grams, this formula reduces the dosage of nicosulfuron, the safety factor is relatively improved, the control effect of broad-leaved grass is greatly improved, and the cost is relatively reasonable. The ratio of 2% nicosulfuron + 20% atrazine is also better, the dosage of the preparation is 180-200 g / mu, the germicidal effect is good, and it also has a certain sealing function.

The southern mountain areas generally use 4% nicosulfuron + 48% atrazine bagged powder, and the dosage of the preparation is 90 g / mu, which solves the situation of low temperature and poor moisture weeds turning green in the mountain area, and has a certain sealing function, and has a high safety factor for corn.

In addition, many manufacturers use 38% atrazine certificates to add 3-4% nicosulfuron. At present, insensitive broad-leaved weeds such as abutilon and purslane in most areas do not account for a large proportion of weeds in corn fields, so nicosulfuron + atrazine is well evaluated in the market. Its function is located in the removal of grass after corn seedlings and has a certain sealing function.

The action characteristics of tobacco herbicide mixture:

1. The stem and leaf treatment and soil closure treatment can effectively control many kinds of annual Gramineae weeds and broad-leaved weeds, and have outstanding effect on Cyperaceae weeds and perennial Gramineae weeds.

two。 Herbicide, closure, drought, tolerance to wheat stubble, no grass damage in one season.

3. Control object: can control corn field aconite, annual and perennial Gramineae weeds, annual broad-leaf weeds.

Outstanding effect (more than 90%) weeds

Horse tang, barnyard grass, thrush grass, aconite, quinoa, amaranth, amaranth

The effect is average (70-90%) weeds

Xanthium sibiricum, Solanum nigrum, duckweed, green grass, dogtooth root, dogtail grass, scutellaria, purslane

Poor effect (50-70%) weeds

Morning glory, white grass, Reed

Poor effect (less than 50%) or ineffective weeds

Perennial broad-leaved weeds such as Tian Xuan Hua, Cyperus roxburghii and so on

IV. Nicosulfuron + dimethyltetrachloride

In general, 56% dimethyltetrachloride 50 grams mixed with nicosulfuron can ensure a better effect. Nicosulfuron + dimethyltetrachloride has advantages over more fields such as malignant weeds in conventional corn fields, such as rosette, Reed, special-shaped sedge, and has outstanding control effect on other broad-leaved grasses. In addition, it also has a good control effect on wheat seedlings and shedding sorghum. When used, it is little affected by high wheat stubble, drought, soil structure and farming conditions, and it is safe and has no residue to the following crop.

However, it should be noted that hormone herbicides (such as dimethyltetrachloride, 2mine4-drop, chlorofluoropyloxyacetic acid, dichloropyridyl acid, etc.) are used in corn fields, and the damage is more serious when applied in the early stage or too late in the corn field. generally, it can not be used in the seedling stage before 4 leaves and not after jointing. The use before 4 leaves can easily lead to fragile meristem and lodging of corn. If used after jointing, it will lead to aerial root deformities such as corn, affect stability, and seriously lead to inability to produce males.

5. Nicosulfuron + isopropyl grass. Atrains / B. Ataxia / Ding. Atrained

Really has the stem and leaf treatment and closure of the dual function of the formula, such as 2% nicotinyl + 40% isopropene, 200 grams per mu of land, but more prone to drug damage, especially nicosulfuron + B? The recipe for atrains. The safest is nicosulfuron + Ding. The recipe for atrains.

The second is nicosulfuron + isopropyl grass? The drug damage of atrazine and isopropachlor to corn is also relatively serious, and the better ratio made in China is: 2% nicosulfuron + 10% butachlor + 20% atrazine, 150 g / mu. 2-2.5% nicosulfuron + 20% isopropachlor + 30% atrazine, 150 g / mu. The mixture of the three has an additive effect on Fructus Digitalis and Amaranthus retroflexus. Its function is located at the back of the seedling, and it has excellent sealing effect at the same time. This formula can effectively control malignant weeds such as millet weeds, thorns, borage, barnyardgrass, Setaria angustifolia, amaranth, quinoa, as well as common grasses and broad-leaved weeds.

Nicosulfuron. Ding. Atrazine: the screening report of related formula showed that the mixture of butachlor: atrazine: nicosulfuron = (10-20): (10-20): (1-2) had partial synergistic effect on broadleaf weeds and additive effect on Gramineae weeds. It can reduce the dosage of three active components. It has no effect on the safety and growth of corn. Field experiments showed that uniform stem and leaf spraying at 3-5 leaf stage and 2-4 leaf stage of weeds had better control effect on annual weeds such as barnyardgrass, dogtail grass, quinoa, Solanum nigrum and so on.

6. Nicosulfuron + nitrosulfone + atrazine

The registered content is approximately 1-3% nicosulfuron + 3-7% nitrosulfonone + 16-20% atrazine, in order to achieve the purpose of removing herbicide. The mixture of the three has the characteristics of expanding the herbicide spectrum, reducing the dosage of single agent, improving crop safety and so on. The determination of the best proportion is greatly affected by the species of weeds tested.

The characteristics of this formula are:

1. The stem and leaf treatment and soil closure treatment can effectively control many kinds of annual Gramineae weeds and broad-leaved weeds, and have outstanding effect on Cyperaceae weeds and perennial Gramineae weeds.

two。 The speed of killing grass is fast, dead grass does not rebound completely, low temperature resistance, drought resistance, can replace all corn seedling herbicides, is the most ideal disposable herbicide, saving time, labor and money.

3. Among the three targets, weeds are not easy to produce resistance.

4. Control object: can control corn field aconite, annual and perennial Gramineae weeds, annual broad-leaf weeds.

Outstanding effect (more than 90%) weeds

Magnolia mandshurica, barnyard grass, thrush grass, aconite, quinoa, abutilon, amaranth, amaranth, Ligang, hard work

The effect is average (70-90%) weeds

Xanthium sibiricum, Solanum nigrum, duckweed, green carp, dogtooth root, purslane, dogtail grass, sargassum

Poor effect (50-70%) weeds

Morning glory, white grass, Reed

Poor effect (less than 50%) or ineffective weeds

Water peanuts, field flowers, thistles and other perennial weeds

7. Nitrofenone + atrazine

The better formula made in China is 16.7% atrazine + 3.3% sulfoxone 260 grams per mu. 22.7% atrazine + 2.3% nitrafenone, 250-300 g / mu. The purpose of adding atrazine is to reduce the turning green of Gramineae grass and expand the herbicide spectrum.

These three formulations still have general control effect on some grasses, especially on Setaria. The key point of use is to apply medicine early, and at the same time, according to the grass phase, such as the main weeds in the field, nicosulfuron products are selected decisively to improve the control effect. The main selling point is that it has a quick effect and is safer than nicosulfuron.

8. Nicosulfuron + octanoyl bromobenzonitrile + 2mine4-butyl ester

The mixture of the three can improve the weed control effect and reaction speed, and improve the safety to crops. The mixture ratio of octanoyl bromobenzonitrile: nicosulfuron: 2mine4-butyl ester = (17:4:9)-(15:4:11) is the best. Different ratios basically showed additive effect on the action mode of barnyardgrass and anti-branch amaranth.

Its characteristics are as follows:

1. It is suitable for areas with more broad-leaf weeds in the field (such as small thistle, abutilon, amaranth, duck toe grass, etc.).

two。 Three ingredients, multi-site control of weeds, weed control thoroughly.

3. Take effect quickly, the effect on broad-leaved weeds is very fast, generally 2-3 days effective, 5-7 days dead grass. It was effective for Gramineae weeds in 7 days, the heart leaves were yellow, and the dead grass died in 15 days, but the dead grass completely and the base of the stem rotted.

However, under the abnormal conditions of high temperature and drought, stagnant water in the field or weak seedlings, it is easy to cause drug damage, and yellow or white drug spots will appear on the upper leaves of corn. At the same time, pay attention to the effect of pesticide on the surrounding broad-leaved crops.

Other formulations containing octanoyl bromobenzonitrile, such as nicosulfuron + octanoyl bromobenzonitrile + atrazine = 3:13:22, reduced the drift damage to the surrounding broad-leaved crops, relatively improved the safety, and improved the control effect on some Gramineae weeds at the same time. It has a certain sealing effect, and the effect is relatively longer.

9. Nitrosulfonone + (refined) Metolachlor / Metolachlor / Acetochlor / Butachlor + atrazine

Safety: nitrosulfonate and atrazine