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Gray gray grass is a kind of annual broad-leaved weed, and only herbicides to control broad-leaved weeds can be selected.
Herbicides refer to agents that can cause weeds to die completely or selectively, also known as herbicides, which are used to eliminate or inhibit the growth of plants. Among them, sodium chlorate, borax, arsenate and trichloroacetic acid have a dead effect on any kind of plants, and their effects are affected by three factors: herbicides, plants and environmental conditions. According to the function, it is divided into incidal and selective herbicides, and most of the selective herbicides, especially nitrophenol, chlorophenol, and carbamate derivatives, are effective.
The development of herbicides in the world has gradually stabilized, mainly developing varieties with high efficiency, low toxicity, broad spectrum and low dosage, and disposable treatment agents with little environmental pollution have gradually become the mainstream.
Gray gray grass aliases: powdered cabbage, gray striped lai, gray gray cabbage, gray weed, white quinoa, waterlogged quinoa or waterlogged grass.
Morphological characteristics: annual herbaceous plant, 60 120 cm tall. Stems erect and stout, ridged and green or purplish-red stripes, multi-branched; Branches rise or develop.
The leaves are alternate, with long petioles; Leaves rhomboid-ovate or lanceolate, 3 6 cm long, cm wide, apex acutely pointed or slightly blunt, base broadly wedge-shaped, margins often irregularly serrate.
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How much is the herbicide for Yu Nongxian.
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How much does it take to measure an acre of Yuhuang? How much?
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In this case, it is basically still relatively expensive, and it is about 500 yuan for a ton.
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1. Pendimethalin.
Pendimethalin is generally 96%, the recent original drug ** is 10,000 tons, the market is generally 330 ml of pendimethalin EC, generally 1 liter of pendimethalin EC contains 330 ml of pendimethalin TC, 770 ml of xylene. At present, xylene is more than 2016 and 2017, according to an industry insider, xylene is 10,000 tons, and the quality difference is very large. The chemical raw materials of 33% pendimethalin emulsifiable concentrate (including high-quality xylene additives) are about 25 yuan liters, plus 10% tax, that is, about 28 yuan liters, plus processing fees, product packaging, advertising costs, transportation costs, as well as the profits of manufacturers and provincial, municipal, county and township dealers.
2. Flulelin.
The original drug of fluoralin is 97% in kind, the recent original drug ** is 30,000 tons, and the market preparation is generally 48% fluorinal emulsifiable concentrate.
3. Glyphosate.
Glyphosate is generally 95%, and the recent original drug is 10,000 tons, so we can plan 41% glyphosate aqueous agent, of course, glyphosate ammonium salt, potassium salt has many problems, the effect is different, and the difference is also very large.
Fourth, glufosinate-ammonium.
Glufosinate-ammonium original drug, 95% of the physical product, and the recent original drug ** is 10,000 tons. The market preparations are generally 10% and 20% glufosinate-ammonium aqueous agents.
5. 2 methyl 4 chloro.
2-methyl-4-chloride original drug, converted into physical quantity, the recent original drug ** is 10,000 tons, and the market preparation is generally 14% and 20% 2-methyl4 chloride sodium .
6. Ethoxyflufen.
Ethoxyfluorfen original drug, 95% in kind, the recent original drug ** is 10,000 tons, and the market preparation is generally 24% ethoxyfluorfen emulsifiable concentrate.
Seventh, the grass is clean.
Promexate original drug, 95% in kind, the recent original drug ** is 10,000 tons, and the market preparation is generally 40% prometrinet wettable powder.
8. Acetochlor.
Acetochlor original drug, converted into physical quantity, the recent original drug ** is 10,000 tons, and the market preparation is generally 95% and 50% acetochlor EC.
9. High-efficiency flupyramethoxalin.
The recent original drug is 250,000 tons, and the market preparation is generally high-efficiency flupyrometalline. Quinoxalin.
10. Quintoxin.
The market for this herbicide is chaotic, and there are often so-called "3 + 1" or "2 + 1" herbicides on the market.
The words of a family are inevitably extreme and insufficient, please refer to them as appropriate!
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Then if it is a herbicide, the ** of one acre of land should be about 15 yuan, so it is calculated according to this **.
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Hello, gray gray grass, also known as gray gray cabbage, is a kind of annual broad-leaved weed, if you can only choose to control the herbicide of broad-leaved weeds, but carefully read the instructions when selecting to prevent damage to corn (grasses) when using. Here is a recommended herbicide for you: Yu Nongxian.
The herbicide is specially used to remove broad-leaved weeds after corn seedlings, which is produced in Shandong, so you might as well try it.
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Now herbicides are not allowed to be used, because herbicides are chemicals, although weeding is fast, but it is difficult for the drug to volatilize within a few years, causing the drug to precipitate in the soil, which will have a negative impact on crops, and crops will absorb nutrients in the soil, and also absorb the residual drugs, resulting in unhealthy crops.
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How much does this herbicide cost?
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Unlike traditional herbicides, it can provide farmers with safer and faster new methods of weed control in the early post-emergence period of corn and sugarcane that are sensitive to pesticides, even for hard-to-control duck plantar grass.
Properties of Gengjie: Gengjie is a systemic conductive herbicide, which is easily absorbed by weed roots, stems and leaves, and conducts up and down through xylem and phloem. After spraying the stems and leaves of corn and sugarcane seedlings, weeds can quickly absorb more than 70% of the active ingredients within 6 hours.
24 hours after application, 70% of the active ingredients absorbed by weeds can quickly conduct the whole weed plant. After the broad-leaved weeds are unearthed, the application of pesticides at the 2 to 4 leaf stages can achieve the ideal control effect, and at the same time, it has a sealing effect of up to 6 weeks on the non-germinated broad-leaved weeds. For gramineous weeds, the best time to use them is at the 1 3 leaf stage after excavation.
The medication time can be flexibly controlled according to the age of the weeds. It mainly controls and controls annual broad-leaved weeds, and the effect is excellent. Such as:
Amaranth, duck plantar grass, amaranth, gray cabbage, Xanthium, purslane, etc., to control annual grass weeds. Such as: barnyard grass, horsetail, self-grown wheat, etc.
Dosage form and adjuvant use.
Gengjie is a more convenient suspension dosage form, containing 50 liters of oxachlorone nitrate and 500 grams of atrazine. Its viscosity is low, in order to give full play to the weeding effect, the special additives that come with the packaging are added when using, which is safe, low dosage, easy to use, does not move in the soil, no pollution to neighboring crops, and no pesticide damage.
How to use additives: 15 30 liters of water per mu, according to the addition of additives to the spray, that is, add 45 70 ml of water per barrel, add Gengjie according to the measurement, and fully stir evenly to spray.
The dosage of (1) spring corn is 100 150 ml mu, and (2) summer corn is 80 120 ml mu. (3) 100 150 ml of sugarcane, only broad-leaved weeds in the field, and the leaf age is low at the 2-leaf stage. However, when the field is dominated by gramineous weeds and the density is high, high doses are used to achieve the desired control effect.
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How much is a group of corn herbicides, how much is a group of agricultural materials companies, and you can know by asking on the spot.
1 Pesticide application time: After corn sowing, the soil is closed or the stem and leaf treatment is treated before the four leaves and one heart (weeds are two to three leaves).
2 Dosage The recommended dosage is 40ml per mu for single use or 30ml mixed with 100g atrazine, mixed with 30kg of water spray, it is strictly forbidden to use more than the dose, otherwise it will burn the leaves and stalks, and affect the growth of corn in the short term.
3 Precautions Sweet corn and waxy corn are sensitive to this product and should not be used in sweet and waxy corn areas.
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