What herbicide should be used to control aconite in corn fields?

According to the reaction of some corn growers, the occurrence of fragrant aconite has shown an upward trend in recent years, and the harm to corn is getting bigger and bigger.

Why is fragrant aconite difficult to prevent? According to the little helper, there are three main points:

1. Observe the underground roots of fragrant aconite, there will be a nucleus, it has strong vitality, and the reproduction rate is fast, it can appear for many generations in a year, and after the herbicide is sprayed, it will not be thorough.

2. The characteristics of Aconite itself determine that in addition to the seeds of Aconite, its tubers and bulbs can be reproduced, and it is observed that in about 20 days, new tubers can be produced, which brings certain difficulties to the prevention and control work.

3. The resistance of fragrant aconite to herbicides increases, and some commonly used herbicides have been used continuously for many years, and some farmers have even increased the amount of herbicides for many years, resulting in lower and lower herbicide effects.

1. Nicosulfuron.

Nicosulfuron has a control effect on aconite below 3 leaves, but if the application is too late, the effect of nicosulfuron on older aconite is average.

2. Mesotrione.

Nitrometrione has a certain inhibitory effect on aconite, if it is a young aconite, it also has a good control effect in areas with little resistance, but the root removal effect is not very high, and it is easy.

Methyl 4 chloride. The overall effect of 2-methyl-4-chloride on the control of fragrant aconite is okay, and it is not expensive, but there is a point, the level of medication is relatively high, because 2-methyl4chloro is a hormone herbicide, and it is easy to cause pesticide damage if used improperly.

4. Chlorpyrisulfuron.

Chlorpyrisulfuron is the preferred agent for many farmers for the prevention and control of fragrant aconite in corn fields, because of two points, one is that the effect is relatively good, and the other is that the safety is relatively good, but there are also disadvantages, the cost of medication is relatively expensive, and the retail price of one mu of land is about 15-20 yuan.

Sulfafen is generally used in corn field prevention and control of fragrant aconite, and the common product on the market is the compound of sulfafen and quinoxalin to achieve the weeding effect of corn field grass and broad; Bendasone can also be used to control the fragrant aconite in corn fields, with 48% Bendasone (Shakolang) dosage of 200 ml per mu, and 30 kg of water evenly sprayed.

Aconite can be treated with a weed herbicide of the sedge family, such as Cyperaceae. Because aconite is a weed of the sedge family, it is most appropriate to purchase the medicine in a targeted manner. The use of the secondary dilution method, that is, first use a small amount of water to dissolve the agent to make the mother liquor, and then add enough water to the mother liquor.

3 5 leaf stage weeds, 60g per 660 square meters of lawn, 5 7 leaf stage weeds 80g per 660 square meters of lawn. Artificial spraying per 660 square meters with water 20 25 kg, spray should be meticulous and thoughtful, so that no heavy spraying and no leakage spraying. Tractor spraying requires a speed of 6km per hour; The volume of liquid spray is 100 130 l hectares, and the pressure is 3 5 atmospheres.

Do not exceed the upper limit of use, high dose use will inhibit the growth of the lawn, and even pesticide damage, in high temperature and high humidity conditions of weeding effect is good, if the lawn is thin, it is advisable to reduce the use, the effect of pesticide application is poor in drought.

For the fragrant aconite in the field of corn crops, it is recommended that the herbicide chlorpyrisulfuron can be sprayed evenly on the fragrant aconite after the emergence of the fragrant aconite, which not only has a very good killing effect on the weed of fragrant aconite, but also has a very good killing effect on other broad-leaved weeds.

Fragrant aconite in the corn field, hoeed after can quickly grow new branches and leaves, so it is also called Huitouqing, the vitality of fragrant aconite is very strong, in order to completely remove the fragrant aconite must remove the underground bulb, and the characteristics of the chlorpyrisulfuron herbicide is a selective systemic conductive herbicide, the effect of removing such weeds is very prominent, you can kill the fragrant aconite in the corn field and the roots below the aboveground, and the effect on fragrant aconite and other broad-leaved grasses is very good. Although it takes more than ten days to see the effect of a slow weeding cycle, it can completely eradicate weeds such as aconite by rotting the roots.

For the malignant weed of fragrant aconite is widely distributed, the adaptability is very strong, it is the main weed in the barren mountain woodland roadside and crop field, especially in summer and autumn, it grows vigorously, under the environmental conditions of high temperature and high humidity, it can germinate and emerge in 3-4 days, and it will spread to the main weed in the field in a few days. Aconite can not only rely on its own rhizome for propagation, but also can use its own seeds for propagation, has a well-developed bottom rhizome, and has a particularly strong ability to tolerate thin accumulation and drought.

Fragrant aconite is the most annoying weed among the weeds, fragrant aconite is also called sand grass, demolique, thunder head, etc., perennial herbaceous plants prefer a wet and cool environment, its underground bulb produces rhizomes, rhizomes will grow new balls, so that the new balls germinate into young grass, one after another continues to grow, is the host of insects such as white-backed planthoppers, black bugs and iron beetles, and the reproductive ability of fragrant aconite is very amazing, it can reproduce rapidly in a short period of time with several times or even dozens of times the number of itself.

The herbicide can be absorbed through the rhizomes and leaves of the weeds, which will cause the weeds to begin to die after more than 10 days, and can also be used a week before the growth of the aconite, which can effectively inhibit the growth of the aconite, and can also renovate the land, water more, and fertilize more.

To choose one that is capable of killing underground rhizomes, there are many similar herbicides. At this time, you have to choose according to the situation of the weeds.

I think it's better to use herbicides with phosphorus and potassium fertilizers. Because these herbicides can reduce the reproduction rate of these things faster.

It is necessary to choose a good conductivity. Such herbicides can directly reach the rhizome and kill the aconite from the roots.

If this is the case, you can go to the place where the medicine is sold and ask them to recommend the medicine to you according to the specific situation of the land.

Aromatic aconite uses glyphosate ammonium salt herbicide.

Glyphosate ammonium salt, which is widely used in agriculture, has strong systemic conductivity, can be conducted to the underground part through the stems and leaves, and has strong destructive power to the underground tissues of perennial deep-rooted weeds, and can reach a depth that cannot be reached by general agricultural machinery.

The principle of action of glyphosate ammonium salt.

It is to inhibit the acetinyl-shikikin phosphate synthase in plants, thereby inhibiting the conversion of shikimiin to phenylalanine, tyrosine and tryptophan, so that the synthesis of protein is disturbed and the plant dies. After glyphosate is put into the soil, it is inactive by combining with iron and aluminum ions, and has no adverse effect on seeds and microorganisms in the soil.

Precautions for the use of glyphosate ammonium salt.

1.Glyphosate ammonium salt is a biocidal herbicide, and the crop should not be polluted when applying the pesticide to avoid pesticide damage.

2.For perennial malignant weeds, such as white grass, fragrant aconite, etc., one more drug should be applied one month after the first application to achieve the ideal control effect.

3.Adding an appropriate amount of diesel fuel or laundry detergent to the liquid medicine can improve the efficacy.

4.On sunny days, the effect of medication is good when the temperature is high, and it should be sprayed in case of rain within 4 to 6 hours after spraying.

5.Glyphosate is acidic, so plastic containers should be used for storage and use.

6.Spraying equipment should be cleaned repeatedly.

7.When the packaging is damaged, it may return to moisture and agglomerate under high humidity, and crystals will precipitate during low temperature storage.

8.It is a systemic conductive herbicide, and attention should be paid to prevent the pesticide mist from drifting to non-target plants and causing pesticide damage.

9.It is easy to complex with calcium, magnesium, aluminum and other ions to lose its activity, and clean soft water should be used when diluting pesticides, and it will reduce the efficacy when mixed with muddy water or dirty water.

10.Do not mow, graze and plough the ground for 3 days after application.

Glyphosate in the broad sense is a general term for various glyphosate salts, and glyphosate in the narrow sense refers to glyphosate acid.

Glyphosate itself is insoluble in water, so it is made into various salts that are easily soluble in water for application, such as ammonium salt, isopropylamine salt, potassium salt, sodium salt, dimethylamine salt and other glyphosate salts.

Comparison of activity (absorption and conduction of glyphosate):

Glyphosate potassium salt, glyphosate dimethylamine salt, glyphosate isopropylamine salt, glyphosate ammonium salt, glyphosate sodium salt.

30% glyphosate acid = 33% glyphosate ammonium salt = 41% glyphosate isopropylamine salt = 37% glyphosate potassium salt = 38% glyphosate dimethylamine.

In addition to the prevention of fragrant aconite, sulfitis and pyrisulfuron herbicides can be used.

Fragrant aconite, is a sedge family, sedge plant.

Creeping rhizomes are long and oval-shaped. The stalk is slightly weak, 15 to 95 cm high, acutely triangular, smooth, tuber-like at the base. leaves many, shorter than stalk, 2 to 5 mm wide, flat; Sheaths brown and often fibrous.

Leaf-like bracts 2 to 5, often longer than the inflorescence or sometimes shorter; The inflorescences of the long lateral branches are simple or recurring, with 2 to 10 radiating branches; radiant branches up to 12 cm long; Spikes gyro-shaped, slightly loose, with 3 to 10 spikelets; Spikelets oblique, linear, 1 to 3 cm long, about mm wide, with 8 to 28 flowers; Spikelets with broad, white-transparent wings; scales slightly densely tile-arranged, membranous, ovate or oblong-ovate, about 3 mm long, apex acute or obtuse, without a short tip, green in the middle, purplish-red or reddish-brown on both sides, with 5 to 7 veins; stamens 3, anthers long, linear, dark blood-red, septum protruding from the apex of anthers; The columella is long, the stigma 3, elongated, protruding from the scales. The nut is oblong-obovate, triangular, 1 3 to 2 5 long scales, with fine spots. The flowering and fruiting period is from May to November.

Habitat of origin. Widely distributed all over the world; In China, it is distributed in Shaanxi, Gansu, Shanxi, Henan, Hebei, Shandong, Jiangsu, Zhejiang, Jiangxi, Anhui, Yunnan, Guizhou, Sichuan, Fujian, Guangdong, Guangxi and other provinces and regions. It grows in the grass of the wasteland on the hillside or in the damp place near the water.

Harvest management. Aconite can be harvested in November-December, when it is ripe, and the harvest should take place on sunny days, either mechanically or manually. After harvesting, the singeing is dried, the machine dehairs are dehaired and graded, and the finished products are packaged, stored and transported.

After harvesting, irrigate the planting land and keep the soil moisture above 50%, which can ensure the natural cultivation of seedlings in the orchard, and there is no need to sow seedlings again.

Key Value: Aconite is a vicious agricultural pest, but the underground rhizomes of Aconite have high medicinal value. Fragrant aconite is a valuable Chinese medicinal material, and many Chinese herbal formulations use fragrant aconite.

Aconite is the dried rhizome of the sedge plant, which has the effects of regulating qi, regulating qi, relieving depression, and regulating menstruation.

Summary. 1. Dimethyltetrachloride.

Corn field herbicides can be used dimethyltetrachloride, it is generally dimethyltetrachloride sodium and dimethyltetrachlorodimethylamine salt, generally speaking, dimethyltetrachloride sodium and dimethyltetrachlorodimethylamine salt exist, when using dimethyltetrachloride for corn field weeding, it is recommended to use in 5-6 leaves of corn, because premature use will cause pesticide damage, corn jointing will affect corn yield.

2. Grass pine.

Generally, it is used when the corn is 4-6 leaves, the effect of this product is good when the temperature is high, and the effect is poor when the temperature is low.

3. Glyphosate.

After 10 leaves of corn, when the corn is more than half a meter, you can use glyphosate (glyphosate without other components) to spray weeds with water, pay attention to directional spraying, do not spray on the corn, the principle of weeding is to use the difference between weeds and crops.

4. Dimethyl zolazone.

Dimethazopyrone is generally used after 5 leaves, and it has a good effect on fragrant aconite and other broad-leaved grasses. Note that high temperature will be harmful, and there will be drug harm when used before 3 leaves. A single dose of azole can be used in 3-5 leaves and can solve some weeds that cannot be solved by nicosulfuron and metrione.

For the preparation of corn, what medicine is used to control weeds with fragrant aconite.

1. Dimethyltetrachloride corn field herbicide can be dimethyltetrachloride, which is generally dimethyltetrachloride sodium and dimethyltetrachlorodimethylamine salt, generally speaking, dimethyltetrachloride sodium and dimethyltetrachlorodimethylamine salt exist, when using dimethyltetrachloride for corn field weeding, it is recommended to use it in 5-6 leaves of corn, because the premature use of Huai cherry cavity will cause pesticide damage, and the use of corn after jointing will affect corn yield. 2. Herbicidal pine is generally used when corn 4-6 leaves, the effect of this product is good when the temperature is high, the effect is poor when the temperature is low, the use of herbicidal pine is very safe for the back stubble 3, glyphosate corn after 10 leaves, generally when the corn is more than half a meter, glyphosate (glyphosate without other components) can be used to spray weeds with water, pay attention to directional spraying, do not spray on the corn, the principle of weeding is to use the difference between weeds and crops. 4. Dimethyl aconone dimethyl azole is generally used after 5 leaves, and the effect is very good for fragrant aconite and other broad-leaved grasses.

Note that high temperature will be harmful, and there will be drug harm when used before 3 leaves. A single dose of azole can be used in 3-5 leaves, which can solve some weeds that can not be solved by nicotinosone and mesotrione.

Seed corn seeds can be used to control herbs and aconite.

Hello, the above medicine can remove the herbaceous aconite.