Description
Bensulfuron 32% WP
Bensulfuron-methyl 32% WP
CAS number: 83055-99-6 | Chemical Name: Methyl 2-{[(4,6-dimethoxypyrimidin-2-yl)carbamoyl]aminosulfonylmethyl}benzoate
I. Product Profile
Benfluralin 32% wettable powder is aHighly effective, selective, systemic herbicide for rice fields, a sulfonylurea herbicide. This product hasExtremely low application rate, broad-spectrum weed control, long residual efficacy, and high safetyWith these characteristics, it provides excellent control of annual and perennial broadleaf weeds as well as cyperaceae weeds in rice fields, making it a classic product for weed management in rice fields. Compared to the traditional 10% formulation, the high-concentration formulation (32%) requires lower application rates, delivers more consistent efficacy, and offers better value for money.
II. Mechanisms of action of active ingredients
Target: Acetyl-L-lactate synthase (ALS) inhibitor
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| active link | Specific mechanisms |
|---|---|
| absorption pathway | The active ingredient rapidly disperses in water and, after being absorbed by the roots and leaves of the weeds, is transported throughout the plant. |
| biochemical target | Inhibiting the activity of acetyl-L-lactate synthase (ALS), inhibiting the biosynthesis of branched-chain amino acids (valine, leucine, and isoleucine) |
| physiological effect | Inhibits cell division and growth, stunting weed growth and causing them to die |
| final performance | The tender tissues of sensitive weeds turn yellow prematurely, inhibiting leaf growth and hindering root development, ultimately leading to necrosis. |
selectivity principle (physics)
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Rice can break down this pesticide, which has virtually no effect on rice growth; it is highly stable and safe.
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It has low mobility in the soil and is safe for subsequent crops
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Shelf life25–35 days
III. Product characteristics
✅ Six Core Advantages
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| Specificities | particular |
|---|---|
| 🎯 Broad-spectrum weed control; specifically targets broadleaf weeds | It provides excellent control of annual and perennial broadleaf weeds and sedge weeds, and is particularly effective against knotweed and cowhage. |
| 🔄 Systemic action, thoroughly eradicates | Once absorbed by the roots and leaves of the weeds, it is transported throughout the plant, destroying it from the inside out, with no regrowth |
| ⏱️ Long-lasting, one application lasts | Effective for 25–35 days; a single application is sufficient to control weeds during the seedling stage of rice. |
| 🛡️ Safe for rice, suitable for subsequent crops | Safe for rice, leaves no soil residues, and is also safe for subsequent crops |
| 💧 High-content formula saves labor and money | 32% High-Concentration Wettable Powder: Low dosage, consistent efficacy, and excellent value for money |
| 🌾 Versatile and adaptable | Can be broadcast or mixed with water for spraying; suitable for application both before and after seedling emergence |
🎯 Preventing Objects
Primary prevention and eradication: Annual and perennial broadleaf weeds and Cyperaceae weeds, such as duckweed, water milfoil, water primrose, water hyssop, odd-leaved sedge, water sedge, rice sedge, water hyacinth, water amaranth, water spinach, water plantain, and water lily.
Suitable crops: Rice seedling beds, direct-seeded rice fields, transplanted rice fields, and wheat fields.
IV. Usage and dosage
📋 Rice field use program
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| Crop type | Application period | Dosage (formulated dose/acre) | water consumption | Mode of application |
|---|---|---|---|---|
| Rice seedling beds/direct-seeding fields | From sowing until the two-leaf stage of weeds | 6–10 grams per mu | 30 kilograms per mu | Spraying or spreading with toxic soil |
| Rice transplanting field | 5–7 days after transplanting (optimal) | 6–10 grams per mu | 30 kilograms per mu | Spraying or spreading with toxic soil |
| Rice Transplanting Field (Perennial Weeds) | 5–7 days after transplanting | 10–16 grams per mu | 30 kilograms per mu | Spraying or spreading with toxic soil |
📋 Application Guidelines for Wheat Fields
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| Crop type | Application period | Dosage (formulated dose/acre) | water consumption | Mode of application |
|---|---|---|---|---|
| Wheat field | When weeds have 2–3 leaves and the soil is moist | 9–13 grams per mu | 30 kilograms per mu | Foliar spray |
Active ingredient dosage: The recommended application rate of 32% benoxyl per mu is 1.9–5.1 grams per muIt is effective against weeds in the two-leaf stage or earlier, but less effective against those past the three-leaf stage.
V. Guidance for use
🔧 Application Points
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| move | operational specification |
|---|---|
| 1. Field preparation | Level the field and maintain a water depth of 3–5 centimeters. |
| 2. Aquifer management | Maintain a water depth of 3–5 cm during application, and keep the soil moist for 3–5 days (direct-seeded fields) or 5–7 days (transplanted fields) after application. |
| 3. Dispensing methods | Using the two-step dilution method, first thoroughly disperse the chemical in a small amount of water, then add sufficient water. |
| 4. Poisonous soil method | Mix the formulation with 20 kilograms of fine, moist soil per mu, and apply evenly after the morning dew has dried. |
| 5. Spraying | Mix 30 kilograms per mu with water and spray evenly to ensure complete coverage of the weeds. |
⚠️ Key Considerations
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⏰ Optimal application period: 对Weeds with two or fewer leavesIt is most effective before the three-leaf stage; effectiveness decreases after that. In transplanted fields, it is best to apply the pesticide 5–7 days after transplanting.
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🚫 Contraindications: 以This product should not be used in rice paddies where barnyard grass is the dominant weed.; It is relatively sensitive to late-season rice varieties (japonica and glutinous rice), so application during the budding stage of late-season rice should be avoided as much as possible, as it may otherwise cause phytotoxicity.
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💧 Water Management: When applying the pesticide, there must be a water layer of 3–5 cm in the rice paddy to ensure even distribution of the pesticide; do not drain or transfer water for 7 days after application to avoid reducing the pesticide’s effectiveness.
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🌡️ Temperature effects: Temperature and soil type have little effect on weed control, but the herbicide has low mobility in the soil.
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🐟 Aquatic safety: It is low in toxicity to fish, birds, and bees, but caution is still advised in rice paddies where fish are raised.
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🧪 Blending recommendations: can be used withazoxystrobinWhen used in combination, it quickly controls broadleaf weeds in wheat fields, offers a broad spectrum of weed control, delivers excellent results, and effectively prevents weed regrowth.
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🔄 Resistance management: Long-term single use is prone to resistance, it is recommended to combine withDichloroquinoline acid, propachlorRotate or mix herbicides with different modes of action.
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🛡️ security: Wear protective clothing, gloves, and a mask when applying the pesticide; wash your hands and face immediately after application; pregnant and breastfeeding women should avoid contact.
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🧹 Instrument cleaning: Rinse the sprayer thoroughly after use to prevent residual pesticide from causing phytotoxicity to other crops.
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📦 Storage conditions: Store in a cool, dry, well-ventilated place, away from direct sunlight and high temperatures; keep away from sources of fire and out of the reach of children.
Sixth, product specifications and packaging
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| sports event | parameters |
|---|---|
| Active ingredient content | Benzylsulfuron ≥32% |
| exterior condition | White to pale yellow powder |
| Suspension rate | ≥70% |
| Wetting time | ≤120 seconds |
| Packaging specification | 10 g × 100 bags/case, 50 g × 100 bags/case, 100 g × 50 bags/box, 500 g × 20 bags/box |
| date of use (on foodstuffs) | 2 years |
Warm Tip: When applying this product, please follow the guidance of your local plant protection authorities and adjust the application plan as appropriate based on local weed communities, cultivation practices, and climatic conditions.
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