Penoxsulam 25 g/L OD

ICAMA Reg. No. PD20181978

Product Category: Heribicides 

A systemic herbicide offering selective post-emergence control of annual grasses, broadleaf weeds, and sedges in transplanted rice fields.

Why Choose Penoxsulam 25 g/L OD?

• Selectively targets weeds, preserving rice crops.

• Provides long-lasting residual control, preventing weed resurgence.

• Systemically absorbed, ensuring comprehensive weed elimination.

Key Features:

1.      Selective Post-Emergence Control: Effectively manages a broad spectrum of weeds, including annual grasses, broadleaf species, and sedges, without adversely affecting rice crops.

2.      Systemic Action: Penoxsulam is absorbed through both foliage and roots, moving within the plant to inhibit growth at meristematic regions.

3.      Extended Residual Activity: Offers prolonged suppression of weed germination and growth, reducing the frequency of applications needed.

4.      ALS Enzyme Inhibition: Interferes with the acetolactate synthase enzyme in weeds, disrupting essential amino acid production and leading to effective weed control.

Detailed Description:

Penoxsulam 25 g/L OD is a systemic sulfonamide herbicide specifically formulated for the selective post-emergence control of various weed species in transplanted rice fields. Upon application, Penoxsulam is readily absorbed by the leaves and roots of target weeds. It translocates throughout the plant's vascular system, concentrating in meristematic tissues where it exerts its herbicidal action. The inhibition of the acetolactate synthase (ALS) enzyme disrupts the biosynthesis of essential branched-chain amino acids—valine, leucine, and isoleucine—leading to halted protein synthesis and cell division. This disruption results in the cessation of weed growth, chlorosis, and eventual plant death. The formulation's extended residual activity ensures that subsequent weed emergence is suppressed, providing long-term control and reducing the need for multiple applications. Penoxsulam 25 g/L OD demonstrates a high degree of selectivity, effectively targeting problematic weeds while being safe for transplanted rice, thereby supporting optimal crop yields and quality.

Effective Against:

·         Annual Grasses:

• Barnyardgrass (Echinochloa crus-galli): A competitive weed that significantly reduces rice yields by competing for nutrients and space.

• Junglerice (Echinochloa colona): Similar to barnyardgrass, it poses a threat to rice cultivation by aggressively competing for resources.

·         Broadleaf Weeds:

• Alligatorweed (Alternanthera philoxeroides): An invasive species that can dominate rice paddies, leading to substantial yield losses.

• Eclipta (Eclipta prostrata): A fast-growing weed that competes with rice plants for light and nutrients, adversely affecting crop health.

·         Sedges:

• Rice Flatsedge (Cyperus iria): A sedge species that thrives in wet conditions, commonly infesting rice fields and outcompeting young rice plants.

• Purple Nutsedge (Cyperus rotundus): Known for its resilience and extensive underground tuber system, making it difficult to control once established.

Registered Scope and Method of Use

Technical Application Requirements:

1.      Timing & Frequency: Apply once per season, 5–7 days post-transplanting, targeting weeds at the 2–4 leaf stage for optimal control.

2.      Application Technique: Ensure even and thorough foliar coverage to maximize herbicide efficacy, avoiding overlaps and missed areas.

3.      Water Management: Maintain a shallow water layer of 2–3 cm during and for at least 24 hours after application to enhance herbicide uptake and effectiveness.

4.      Environmental Considerations: Avoid application during windy conditions or if rainfall is anticipated within 1 hour to prevent runoff and ensure the herbicide remains effective.