Selective post emergence contact herbicide for stem and leaf treatment 2,4-D isooctyl ester
What is 2,4-D isooctyl ester cas25168-26-7?
The pesticide herbicide 2,4-D isooctyl ester is a chlorophenoxy compound selective herbicide with high boiling point, low volatility and low drift. Cas 25168-26-7 is used in crops, lawns, forests and other environments. Control of broadleaf weeds.
Mechanism of action of 2,4-D isooctyl ester cas25168-26-7
The pesticide 2,4-D is a hormonal herbicide that has an enzymatic effect at high concentrations, prompting the weed stem tissue to increase nucleic acid and protein synthesis, restore the division ability of mature cells, thereby promoting cell division, causing abnormal growth and leading to The weeds die and the symptoms of weed poisoning are similar to those of auxin substances.
Synthesis process of 2,4-D isooctyl ester cas25168-26-7
Esterification of 2,4-D acid and isooctyl alcohol yields 2,4-D isooctyl ester
The unit consumption of 2,4-D is 0.6, and the unit consumption of isooctyl alcohol is 0.45. It can be seen from the intermediates required for the production of the original drug that phenol, chloroacetic acid, isooctyl alcohol, etc. are all basic chemical products and are closely related to petroleum prices and currency. There is a certain correlation with expansion, etc., so the fluctuation of basic chemical raw materials this year has a great impact on the cost of the original drug. Isooctanol once directly increased from more than 7,000 yuan to 15,000, and the price of the original drug also directly increased from 16,500 yuan to 24,000 yuan. , reaching a record high.
2,4-D isooctyl ester cas25168-26-7 function
The herbicide 2,4-D isooctyl ester hormone herbicide is mainly used for stem and leaf treatment to control annual and perennial broadleaf weeds. When soil treatment is carried out, it also has a certain control effect on annual grass weeds and perennial weed sprouts propagated by seeds, but has no effect on adult grass weeds. After its salts or esters are sprayed on weed leaves, the plants convert them into corresponding acids to produce toxic effects. It is easily degraded by soil microorganisms in the soil. Under warm and humid conditions, the lasting period in the soil is 1 to 4 weeks. Under cold and dry climate conditions, the lasting period is longer and can be used up to 1 week. ~2 months. This type of herbicide has very low toxicity to humans and livestock and is relatively safe under normal conditions.
Hormonal herbicides, like indole acetic acid (IAA), control the growth and development process of plants and affect the regulation of plant gene expression. It activates metabolic processes in sensitive plants, causing ethylene to accumulate, causing abnormal symptoms such as stem bending, tissue swelling, cupping of leaves, and inhibition of growth and photosynthesis. Weeds develop resistance to hormonal herbicides very slowly.
2,4-D isooctyl ester cas25168-26-7 Application
The main dosage form of the herbicide 2,4-D isooctyl ester is 87.5% single dose emulsifiable concentrate, and is mainly compounded with acetochlor, atrazine, etc. It is used in the same way as 2,4-D butyl ester and is basically used as its replacement. The product exists and is mainly used as a soil sealant in corn and soybean fields to control annual weeds. It can also be used to control broadleaf weeds in the grass family and is mainly used in corn and wheat fields. 2,4-D isooctyl ester has now completely taken over the role of 2,4-D butyl ester in dry fields. 2,4-D isooctyl ester has a higher boiling point than 2,4-D butyl ester, is less volatile at room temperature, and has smaller drift than 2,4-D butyl ester. Therefore, in this respect, it is better than 2,4-D isooctyl ester. Butyl ester is safer.
The difference between 2,4-D isooctyl ester cas25168-26-7 and 2,4-D butyl ester
How to use 2,4-D butyl ester
The herbicide 2,4-D isooctyl ester is suitable for use in winter wheat and barley fields at the late tillering stage and the 3 to 5 leaf stage of broadleaf grass. Use 50 to 100 ml of 72% 2,4-D butyl ester EC per acre. Dilute the spray with 30 to 40 kg of water.
The applicable period for use in spring wheat and barley highland barley fields is from 4 to 5 leaves to the peak tillering stage, and the dosage is the same as that of winter wheat.
The herbicide 2,4-D isooctyl ester is used on corn and sorghum fields 3 to 5 days after sowing. Before emergence, use 50-100 ml of 72% 2,4-D butyl ester emulsifiable concentrate per acre, and mix it evenly with about 35 kg of water. Spray the soil surface and weeds that have emerged. You can also use 40 to 65 ml of 72% 2,4-D butyl EC per acre and about 35 kg of water to spray the stems and leaves of weeds at the 4-5 leaf stage after corn and sorghum emerge.
The herbicide 2,4-D isooctyl ester is suitable for use in millet fields during the 4 to 6 leaf stage of millet seedlings. Use 30 to 50 ml of 72% 2,4-D butyl ester EC per mu, 15 to 20 kg of water, and Weed stem spray.
Use in rice fields: The applicable period is the end of the tillering stage of rice. Use 35 to 50 ml of 72% 2,4-D butyl emulsifiable concentrate per mu, and spray it with 30 kg of water. Drain the water layer the night before spraying, add water the next day after spraying, and manage normally thereafter.
The herbicide 2,4-D isooctyl ester is used in sugarcane fields. The applicable period is before the sugarcane sprouts. Use 150-200 ml of 72% 2,4-D butyl ester EC per acre and spray 30 kg of water.
The herbicide 2,4-D isooctyl ester is used in pasture. Use 150-200 ml of 72% 2,4-D butyl ester EC per acre and spray 25-50 kg of water.
Precautions for 2,4-D butyl ester
2,4-D butyl ester is very sensitive to dicotyledonous crops such as cotton, soybeans, rapeseed, sunflowers, and melons. Spraying must be carried out in calm or breezy weather. Do not spray or drift into sensitive crops to avoid phytotoxicity. Do not use 2,4-D butyl ester in fields with sensitive crops.
Strictly control the application period and dosage. Wheat and rice are sensitive to 2,4-D butyl ester before the 4-leaf stage and after jointing and should not be used.
It is best to use a specialized sprayer. To avoid phytotoxicity caused by spraying other pesticides. If it cannot be used exclusively, it should not be used if it has been sprayed with 2,4-D butyl ester and is sensitive.
2,4-D butyl ester cannot come into contact with acids and bases to avoid decomposition and failure.
Scope of application of 2,4-D isooctyl ester:
Wheat fields, soybean fields, corn fields
Herbicidal properties: Selective post-emergence stem and leaf treatment herbicide.
Applicable crops:
Soybeans, corn, wheat.
Prevention objects:
Thistle, endive, commelder, horsetail, pigweed, polygonum, rice crock, nightshade, ramie, ionweed, chickweed, amaranth, humulus, cocklebur, field bindweed and other annual or perennial broad Leaf weed.
2,4-D butyl ester application technology
To control broadleaf weeds in wheat fields, use 66 to 88ml/acre of 50% EC, mixed with 30 to 40kg of water to spray the stems and leaves. To control broadleaf weeds in corn fields, spray the soil with 86 to 122ml/acre of 50% EC after sowing and 30 to 40kg of water before emergence. To control weeds in soybean fields, spray the soil with 76 to 90ml/acre of 50% EC mixed with 30 to 40kg of water after sowing and before emergence.
Precautions
This drug causes serious damage to broad-leaf crops, so pay attention to the drift of the liquid when using it.
Product Description
The weeds are not resistant and the weeding effect is better.
It has better control effect on acanthus, endive, duckweed and Artemisia.
Wheat production can be increased by 5 to 20%, and it can also increase the production of other crops.
Crops are not harmed by pesticides and have no impact on subsequent crops.
Since its emergence, 2,4-D isooctyl ester has been more commonly used in combination with other products, and has also better circumvented or reduced many shortcomings of 2,4-D butyl ester (such as residue, low temperature resistance, etc. ). "Maisida" from Dow AgroSciences in the United States is the most typical representative, and its control effect against resistant Artemisia spp. in wheat fields is relatively outstanding.
2,4-D herbicides have the advantages of being relatively low-cost and highly effective, and are less likely to develop resistance to target herbicides. In areas where food crops are concentrated, they will continue to exert their residual heat under certain circumstances. For example, the best agent to control wormwood in wheat fields is 2,4-D butyl ester.
Everyone must pay attention to the poor low temperature resistance of 2,4-D to avoid the occurrence of chemical hazards during use. However, their residues and wastewater treatment generated from the production of original drugs determine that their lifespan will not be long. Even if new compound derivatives appear, everyone must understand the common characteristics and disadvantages of such herbicides to truly and effectively make these herbicides effective.
Herbicide 2,4-D isooctyl ester cas25168-26-7 price
Normally, the price of the pesticide and herbicide 2,4-D isooctyl is affected by raw materials, market environment, R&D costs, etc. If you want to know the latest price of the pesticide and herbicide 2,4-D isooctyl ester you need, please contact us to initiate an inquiry.
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Herbicide 2,4-D isooctyl ester cas25168-26-7 supplier
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