Herbicide for Rice Bispyribac-sodium 180g/kg +bensulfuron Methyl 120g/kg WP

Herbicide for Rice Bispyribac-sodium 180g/kg +bensulfuron Methyl 120g/kg WP

Common Names: Bispyribac-sodium (180 g/kg) + Bensulfuron-methyl (120 g/kg)

Formulation: WP (Wettable Powder)

Core Product Positioning:

This product is a highly effective, broad-spectrum herbicide mixture specifically designed for rice paddies. It combines bispyribac-sodium (for rapid post-emergence foliar control) with bensulfuron-methyl (for soil-residual pre-emergence control and long-lasting foliar activity). Offering a triple-action approach—contact foliar killing, systemic translocation, and soil-residual control—it effectively manages mixed infestations of barnyard grass, broadleaf weeds, and sedges. It simultaneously eliminates mature, resistant weeds and suppresses newly emerging ones, providing both rapid results and long-lasting protection. It effectively overcomes herbicide resistance and controls the entire weed spectrum in a single application, significantly reducing the frequency of spraying.

Dosage and Administration

1. Scenario-based Application Guidelines

• Preventive/Light weed infestation (2–3 leaf stage): 30g per mu; apply via standard spray; combines pre-emergence and post-emergence control for early suppression.
• Moderate infestation/Standard resistance (3–5 leaf stage): 35g per mu; apply as a fine, even mist, ensuring complete coverage of the entire weed plant.
• Heavy infestation/Mature resistant weeds (5+ leaves): 40g per mu; increase water volume and focus spraying on areas with dense weed growth to ensure thorough eradication.

2. Optimal Application Timing

• Rice: Apply after the 4-leaf stage for direct-seeded rice, or after recovery and establishment for transplanted/broadcast-seeded rice; completely safe for the crop.
• Weeds: The 2–5 leaf stage is the optimal window; weeds are most susceptible and control efficacy is highest at this time. Higher dosages are required for mature weeds.

3. Key Application Techniques

• This product is a wettable powder; use the "secondary dilution" method: first, dissolve the product in a small amount of water to create a concentrated stock solution, then pour it into the sprayer, add the remaining required water, and stir thoroughly before spraying to prevent sedimentation or clumping.
• Drain the field before application, keeping the soil moist but without standing water; re-flood the field 1–2 days after application, maintaining a water depth of 4–5 cm for 5–7 days to enhance the soil-sealing effect.
• Apply on calm, sunny days; avoid spraying during the heat of midday (temperatures above 30°C). Re-apply if rainfall occurs within 4 hours of application.
• Ensure uniform and thorough coverage, focusing on weed stems and leaves; avoid overlapping or missing areas, and do not exceed the recommended dosage.
• Limit application to once per rice season to prevent the development of herbicide resistance.

Safety Protocols for Application (Operational Safety Standards)

This product is a herbicide with potential irritant properties; strictly adhere to safety protocols throughout the operation:

• When preparing and applying the product, personnel must wear long-sleeved protective clothing, rubber protective gloves, dust masks, goggles, and non-slip rubber boots; direct skin contact with the product and inhalation of spray mist or dust through the mouth or nose are strictly prohibited.
• Smoking, drinking, and eating are strictly prohibited during operations to prevent ingestion; operations must be conducted upwind throughout the process.
• Pregnant women, nursing mothers, minors, and individuals who are physically frail or prone to allergies are strictly prohibited from participating in preparation and application tasks.
• Application areas must be kept away from fish ponds, shrimp pools, waterways, and water sources; this product is toxic to aquatic organisms, and contamination of water bodies by the liquid product or residues is strictly prohibited.
• Application near apiaries or mulberry orchards is prohibited to avoid harming beneficial organisms in the vicinity.
• After operations, immediately wash hands, face, and exposed skin thoroughly with soapy water and change into clean clothing; application equipment must be cleaned thoroughly and separately, and wastewater from cleaning must not be discharged into farmland or water bodies.
• Discarded product bags and packaging materials must be collected for centralized disposal; random discarding, burning, or burying is strictly prohibited.

Storage and Transportation Specifications

1. Storage Requirements

• Store in a dedicated pesticide warehouse that is cool, dry, ventilated, and protected from light, rain, and moisture; keep away from sources of fire, heat, and electricity; exposure to direct sunlight, rain, or high-temperature/humid conditions is strictly prohibited.
• Maintain storage temperatures between 0°C and 30°C to prevent freezing (at low temperatures) or decomposition/loss of efficacy (at high temperatures), and to prevent moisture absorption and caking.
• Store in a sealed, separate area; do not store with food, drinking water, grain, animal feed, daily necessities, or seeds; keep out of reach of children and livestock to prevent accidental contact or ingestion.
• If the product is opened but not fully used, the bag opening must be tightly secured and sealed immediately; use the remaining product as soon as possible to prevent loss of efficacy or deterioration due to moisture absorption. The storage site is equipped with fire, moisture, and seepage prevention facilities, features prominent "Toxic Pesticide" warning signs, and is managed by designated personnel.

2. Transportation Requirements

• Avoid violent jolting, crushing, collisions, or overturning during transport to prevent packaging damage or chemical leakage.
• Ensure protection against light, rain, and moisture throughout the journey; strictly prohibit mixed transport with flammable/explosive materials, strongly alkaline substances, food, or animal feed.
• Strictly comply with regulations governing the transport of hazardous pesticides; ensure standardized loading/unloading and proper handling practices.

Important Precautions

• Resistance Management: This product is a mixture of two active ingredients with the same ALS-inhibiting mode of action. To delay the development of weed resistance, apply only once per crop season; do not use it exclusively in consecutive applications. It may be alternated with rice herbicides that have different modes of action.
• Crop Safety: Apply strictly during the designated growth stages of the rice. Do not apply excessive amounts during the seedling stage, or to weak or diseased seedlings, or under high-temperature stress conditions, to avoid phytotoxicity.
• Mixing Restrictions: Do not mix with strongly alkaline pesticides or foliar fertilizers, as this may cause the product to decompose and lose effectiveness. It may be mixed with standard neutral or acidic insecticides and fungicides for rice; small-scale compatibility and application tests are recommended prior to general use.
• Environmental Safety: Highly toxic to aquatic organisms such as fish, shrimp, and crabs. Do not discharge paddy water into rivers, fish ponds, or aquaculture areas within 7 days of application. Keep away from water source protection zones and aquaculture areas.
• Pre-harvest Interval (PHI): Strictly observe the safety interval before rice harvest. Manage water levels properly after application to prevent excessive pesticide residues.
• Shelf Life: 2 years when stored properly in a sealed container.

Summary of Key Product Advantages

• Broad-spectrum Weed Control: Effectively controls all three major categories of weeds—grasses, broad-leaved weeds, and sedges—solving the problem of mixed weed infestations in rice fields without the need for multiple herbicides.
• Fast-acting & Long-lasting: Pyribenzoxim delivers rapid weed knockdown, while bensulfuron-methyl provides long-term residual control; this combination prevents weed regrowth and offers a residual effect lasting over 30 days.
• Resistance Buster: Synergistic dual-active ingredients provide outstanding control against stubborn weeds—such as mature and resistant barnyard grass—effectively overcoming the poor performance often seen with conventional herbicides.
• Crop Safety: Compatible with all types of rice cultivation systems; when used according to guidelines, it has no adverse effects on rice tillering, growth, or yield.
• Time and Labor Saving: A single application combines knockdown and residual control, reducing the frequency of spraying and significantly lowering labor and chemical costs—offering exceptional value.