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Description
pyrazosulfuron herbicide Pyrazosulfuron Ethyl 10% WP Uses, DosageKrishikranti Sevak Pyrazosulfuron Ethyl 10% WP is a selective, systemic, post emergence pyrazosulfuron ethyl herbicide developed for weed control in transplanted paddy. It belongs to the sulfonylurea group and works at a very low dose to clear broadleaf weeds and sedges from the rice field within 1520 days of spray. This pyrazosulfuron herbicide is most effective when applied 015 days after transplanting (DAT), while weeds are still in the 24 leaf
Krishikranti Sevak Pyrazosulfuron Ethyl 10% WP is a selective, systemic, post-emergence pyrazosulfuron ethyl herbicide developed for weed control in transplanted paddy. It belongs to the sulfonylurea group and works at a very low dose to clear broadleaf weeds and sedges from the rice field within 15–20 days of spray.
This pyrazosulfuron herbicide is most effective when applied 0–15 days after transplanting (DAT), while weeds are still in the 2–4 leaf stage and standing water is maintained in the field.
Pyrazosulfuron Ethyl 10% WP Dosage & Spray Details
| Parameter | Recommendation |
|---|---|
| Dose per acre | 80 g |
| Dose per hectare | 200 g |
| Water volume | 200 L/acre (500 L/ha) |
| Best application stage | 8–12 DAT (Days After Transplanting) |
| Field condition | Maintain 2–5 cm standing water for 3–5 days post-spray |
| Crop | Transplanted Rice (Paddy) |
| Type | Selective, systemic, early post-emergence |
Always read the label before use. Spray during cool hours (morning/evening). Do not drain the field for at least 3 days after application.
Weeds Controlled by Pyrazosulfuron Ethyl 10 WP
Broadleaf Weeds
- Monochoria vaginalis
- Eclipta alba (Bhringraj)
- Ammania baccifera
- Ludwigia parviflora
- Marsilea quadrifolia (Sushni)
Sedges
- Cyperus difformis (Motha)
- Cyperus iria
- Fimbristylis miliacea
- Scirpus juncoides
For grassy weeds like Echinochloa (Sawa/Sanwak), tank-mix or sequential application with a grass-active herbicide is recommended. See our Bispyribac Sodium 10% SC for broader-spectrum paddy weed control.
Key Benefits of Pyrazosulfuron Ethyl Herbicide
- Low dose, high impact: Only 80 g per acre clears the field — lower input cost per acre.
- Selective on paddy: Safe for transplanted rice when applied at the right stage.
- Long residual effect: Controls new weed flushes for 25–35 days after application.
- Wide weed spectrum: Targets the most problematic broadleaf weeds and sedges of Indian paddy fields.
- Easy to mix: WP (Wettable Powder) formulation dissolves uniformly in water.
- Compatible: Tank-mix friendly with most paddy-recommended herbicides for grass control.
How Does Pyrazosulfuron Ethyl Work?
Pyrazosulfuron ethyl is an ALS (Acetolactate Synthase) inhibitor. After spraying, the molecule is absorbed by both leaves and roots of the weed and moves systemically through the plant.
Inside the weed, it blocks the ALS enzyme, which is responsible for producing branched-chain amino acids (valine, leucine, isoleucine) essential building blocks for plant growth. Without these amino acids, cell division stops.
Visible symptoms appear within 3–7 days: growth stops, leaves turn yellow/reddish, and weeds die completely within 15–20 days.
Because the paddy crop metabolises pyrazosulfuron ethyl rapidly, transplanted rice remains unaffected making it a true selective herbicide for paddy.
When & How to Spray Pyrazosulfuron Ethyl 10 WP
- Timing: 8–12 days after transplanting (DAT). Weeds should be at 2–4 leaf stage.
- Field prep: Drain excess water, keep 2–5 cm standing water in field.
- Mixing: Dissolve 80 g in a small quantity of water first, then add to a 200 L spray tank.
- Spray: Use a flat-fan nozzle. Cover the field uniformly. Avoid spraying in strong wind or rain.
- After spray: Do not drain the water for 3–5 days. Re-irrigate normally after that.
For a complete weed management plan, read our blog: Effective Herbicides for Weed Control in Paddy.
Pyrazosulfuron Ethyl 10 WP Uses in Hindi (पायराजोसल्फ्यूरॉन एथिल 10 WP का उपयोग)
Krishikranti Pyrazosulfuron Ethyl 10% WP धान (paddy) की फसल में चौड़ी पत्ती वाले खरपतवार (broadleaf weeds) और मोथा (sedges) को नियंत्रित करने वाला चयनात्मक खरपतवारनाशी है।
- फसल: रोपाई वाला धान (Transplanted Rice)
- मात्रा: 80 ग्राम प्रति एकड़ (200 ग्राम प्रति हेक्टेयर)
- पानी की मात्रा: 200 लीटर प्रति एकड़
- छिड़काव का समय: रोपाई के 8–12 दिन बाद
- नियंत्रित खरपतवार: मोथा, सांवक, बथुआ, सुशनी, इकलिप्टा आदि
- विशेष ध्यान: छिड़काव के समय खेत में 2–5 सेमी पानी अवश्य रखें और 3–5 दिनों तक पानी न निकालें।
Product Specifications
| Technical Name | Pyrazosulfuron Ethyl 10% WP |
| Brand | Krishikranti |
| Chemical Group | Sulfonylurea |
| Category | Selective Herbicide / Weedicide |
| Formulation | WP (Wettable Powder) |
| Target Crop | Paddy (Rice) |
Frequently Asked Questions (FAQs)
1. What is Pyrazosulfuron Ethyl 10% WP used for?
Pyrazosulfuron ethyl 10 WP is used as a selective post-emergence herbicide in transplanted paddy to control broadleaf weeds and sedges such as Cyperus, Monochoria, Eclipta, and Fimbristylis.
2. What is the dose of Pyrazosulfuron Ethyl 10 WP per acre?
The recommended dose is 80 g per acre (200 g per hectare), mixed in 200 litres of water.
3. When should I spray Pyrazosulfuron Ethyl on paddy?
Spray between 8 to 12 days after transplanting (DAT), when weeds are at the 2–4 leaf stage and the field has 2–5 cm of standing water.
4. Does Pyrazosulfuron Ethyl control grass weeds in paddy?
No. It is mainly effective against broadleaf weeds and sedges. For grassy weeds like Echinochloa (Sawa), tank-mix or use a sequential spray with a grass-active herbicide such as Bispyribac Sodium 10% SC.
5. Is Pyrazosulfuron Ethyl safe for paddy crop?
Yes. When used at the recommended dose and stage, it is fully selective and safe for transplanted rice. The paddy plant rapidly breaks down the molecule.
6. Can I drain water after spraying Pyrazosulfuron Ethyl 10 WP?
No. Keep 2–5 cm of standing water in the field for at least 3–5 days after spraying for the herbicide to work effectively.
7. How many days does Pyrazosulfuron Ethyl take to kill weeds?
Visible yellowing and growth stoppage starts in 3–7 days. Complete weed death is seen within 15–20 days of spray.
8. Can Pyrazosulfuron Ethyl be used in direct-seeded rice (DSR)?
It is primarily registered for transplanted paddy. For DSR, consult your local agriculture officer or check the label, as timing and dose differ.
9. What is the mode of action of Pyrazosulfuron Ethyl?
It inhibits the ALS (Acetolactate Synthase) enzyme in weeds, blocking branched-chain amino acid synthesis and stopping cell division.
10. Where can I buy genuine Pyrazosulfuron Ethyl 10 WP herbicide online?
You can buy genuine Krishikranti Pyrazosulfuron Ethyl 10% WP directly from Krishi Bhandar's Herbicide Collection with doorstep delivery across India.
Related Products & Categories
- Browse all Herbicides & Weedicides
- Explore Rice / Paddy Products
- Pre-emergence option: Pendimethalin 38.7% CS
- Broad-spectrum paddy herbicide: Bispyribac Sodium 10% SC
- For organic farms: All Clear Organic Weedicide
Related Reading
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