Pyrazosulfuron Ethyl 10% WP

Pyrazosulfuron Ethyl 10 WP is a selective systemic herbicide used in rice to control broad-leaved weeds, sedges, and grasses through pre- and post-emergence application.

Mode of Action

Pyrazosulfuron Ethyl 10 WP is an acetolactate synthase (ALS) inhibitor, which blocks the biosynthesis of essential amino acids such as valine and isoleucine. This inhibition stops cell division and plant growth, leading to the death of targeted weeds while being safe for rice crops when used as directed www.zagro.com+1.

Target Crops and Weeds

• Crops: Wet-sown and transplanted rice (paddy)
• Weeds Controlled: Annual and perennial broad-leaved weeds, sedges, and some grasses www.zagro.com+1

Application Methods

• Pre-emergence: Apply on wet soil immediately after transplanting or sowing. Maintain wet conditions for at least three days to enhance root absorption and control sedges effectively www.bighaat.com.
• Post-emergence: Can be applied to actively growing weeds in transplanted rice fields.
• Method: Spraying or broadcasting; can be mixed with other compatible herbicides or fertilizers for broader weed control www.bighaat.com.

Dosage

• Per Acre: 4060 g
• Per Liter of Water: 0.20.3 g/litre
• Pump Sprayer: 34.5 g in 15 liters of water
• Timing: Apply 37 days after transplanting for optimal results www.albaugh.com+1.

Safety and Precautions

• Apply during cooler hours (early morning or late afternoon) to reduce drift and avoid harming beneficial insects www.bighaat.com.
• Avoid spraying on windy or rainy days to prevent wash-off and drift.
• Follow label instructions carefully to ensure crop safety and effective weed control.
• Observe the pre-harvest interval (PHI) of 95 days before harvesting www.zagro.com.

Summary

Pyrazosulfuron Ethyl 10 WP is a broad-spectrum, selective herbicide for rice that provides effective control of sedges, grasses, and broad-leaved weeds. Proper timing, dosage, and application methods are crucial for maximizing efficacy while maintaining crop safety www.zagro.com+1.