How to choose soybean herbicide varieties

First, the recommended selection of varieties

Seedlings recommended before: Serratine, Metolachlor, Propalachlor, Alachlor, Isoprofen, Thifensulfuron, Sulfachlor, 90% Acetochlor, C Alfluoxamate, 2,4-diethylhexyl octanoate, and oxathione.

Among them, the order of safety of amides from soybeans to soybeans was good to poor: S-metolachlor = metolachlor = alachlor> isoprofloxacin> 90% acetochlor> 50% acetochlor. The propofol flufenacil applied in the low-lying land, soya bean burial period, the application of pesticides before sowing, unmixed soil before sowing, torrential rain at soybean seedling stage will cause contact phytotoxicity, is traumatic, does not transmit to the body, and can be transmitted within a short time. Recovery of normal growth; serious root rot, low soil organic matter content, texture, loose conditions, rainy, high humidity, low temperature, and when mixed with acetochlor, oxetrione, etc., serious injury, large output loss.

The recommended dosage of isoflurane is 480 g/ha.

The recommended dosage of sulfachlor is 32g/ha.

Mixed formulation: 70% dicamba, isopropylate, and isoflurane.

Post-emergence recommendation: fluazifen, acridine, quizalofop, flupirtine, flurazepam, quinacridon, clethodim, fomesafen, extinction Grass pine, milk fluoride grass spirit, acifluorfen, iso-f grass pine.

Among them, the safety of diphenyl ethers to soybeans is in a good order: foflusafen> milkfluprefon> acifluorfen> ethylfluoroacetate.

In a soy complex leaf stage, 25% fomesafen is used in 900 ml/ha; soybean is 2-3 in the compound leaf period 1000 ml/ha.

Prevention and control of annual grass weeds alfalfa weed, wild oats, and foxtail selection of fluazifop-Peilin, acridine, quizaloprene, high-efficiency flupirtine, spermidine, quinacridate, Clethodim.

Prevention and control of annual grass weeds and gold foxtail used fluazifop, acridine, high-efficiency flupirtine, spermidine, quinoxaline, clethodim. The amount of 5% quizalofop was increased to 1500 ml/ha.

Mixed formulation: 44% carbazol, 18% sulfinamide, quinazoline, isofluosoxone, 21%, 36% sulfinamide, quinazoline, dexamethasone, 18%, and 36% sulfamethoxazole. Pine Emulsion, 20.8% fluorosulfonyl acridine.

Second, conditional use of varieties

Trimetin (Sec): It is not recommended for single use because of soybean safety issues. For areas with low soil organic matter, 70% of oxaprozin 300g/ha is used; the content of soil organic matter is relatively high, with an active ingredient of 400g/ha or less. There is a difference in resistance to oxathione among varieties of soybean. Variety susceptibility testing should be conducted before using oxathione in large areas, and it is not recommended in low-lying areas. Do not apply pesticides during the period of soybeans. Soybean fields with soil organic matter below 2% cannot use oxaprozone.

2,4-D isooctyl ester replaces 2,4-D butyl ester. 72% 2,4-D-Isooctanoate 750ml/ha or less, to control uncultivated broad-leaved weeds, sandy soil with less than 2% of soil organic matter is not recommended. It is not recommended to apply mixed soil before sowing and soya bean arch. Medicinal materials, especially sensitive schisandra cultivation area, in order to avoid the 2,4-D butyl ester drift hazards, must use 2,4-diethylhexyl ester.

Trifluralin has reduced its production due to injury to soybean roots and aggravation of root diseases. It is only used in autumn crops in the north of the country to control wild oats and other large grassland bases.

Third, do not recommend the use of varieties

Poorly safe single and mixed formulations are not recommended.

Seedlings are not recommended before: 50% acetochlor, acetylene (acetochlor + 2,4-D Butyl Ester), Epineprazine (acetochlor + oxathione), Ding Ding 扑 ? B (2, 4-Drip + Praxachlor + Acetochlor), B-F (Acetochlor + F), Lib-B (Leguuron + Acetochlor), Dibutrazine-B (2, Herbicides such as 4-dibutylbutyrate, oxathione, and acetochlor).

Seedlings are not recommended: Ethoxyfluazone, refined quinolones, triacyl carboxylates, quizaloxine, trifluasafer, fine quinoline, quizaloxine, and acetochlor.

IV. Application of herbicides at different growth stages

1, soybean autumn application, spring before sowing, before planting seedlings after selection: Spermatine, metolachlor, isoprotochlor, alachlor, iso-f straw, thifensulfuron,? Sulfachlor, 90% acetochlor, propynoxaflu.

Mixed formulation: 70% dicamba, isopropylate, and isoflurane.

2. Soybean arch stage selection: S-metolachlor, Metolachlor, Isoprofen, Thifensulfuron.

3, Soybean true leaf stage (Pigrion, burdock, chokechoi control appropriate period) selection: iso-f grass pine, grass pine, fluazifop, acridine, fine quinoline spirit, Efficient flupirtine, spermidine, quinoxaline, clethodim.

4, soy complex 1 leaf phase selection: different? f grass pine, imazapyr, fomeid, fluazifop-Porcine Ling, acridine, quizaloprene, high-efficiency flupirazine, essence? Fazolyl, quinolone, clethodim.

Mixed formulation: 18% Fluoxetine/Quinoline/Quinone/Isolani frankincense oil, 21% Fluoxetine/Quinoline/Quinonexadol microemulsion, 36% Fluoxetine/Isolubulinate, 18% Fluoxamidine Ff loose microemulsion, 13.6% fluorosulfamethoxine quinazoline isofoam microemulsion, and 20.8% fluorosulfonylendipine EC.

5, soybean 2-3 complex leaf period: (1) single agent. Isoflufrax, valeriana, fluazifop, acridine, quizalofop, flupirtine, frazoxime, quinoxaline, clethodim, Triflumurin, acifluorfen, imazamox, and fluorooxalic acid. (2) Mixed formulation. 18% Fluoxetine/Quinoline/Quinoline/frankincyanolone, 21% Fluoxetine/Quinacin/Quinacloxone Microemulsion, 36% Fluoxetine/Quinoline/Quinone/Vitae, 36% Fluoxetine Ff pinenut oil, 18% fluorosulfanilamide isotrifluoroemulsion, 13.6% fluoxinamide quinazoline isothiocyanate microemulsion, 20.8% fluorosulfamethoxazole EC, and 44% carbendazim.

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