Product
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Cyhalofop-butyl 20% OD
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Descriptions
ICAMA Reg. No. PD20170819 Product Category: Herbicides A selective post-emergence herbicide designed to control annual grass weeds in direct-seeded rice fields.
Why Choose Cyhalofop-butyl 20% OD?
Key Features: 1. Selective Grass Weed Control: Effectively manages annual grasses such as barnyardgrass (Echinochloa crus-galli) and Chinese sprangletop (Leptochloa chinensis), which compete with rice for nutrients and space. 2. Post-Emergence Application: Designed for application during the early growth stages (2–3 leaf stage) of target weeds, ensuring timely intervention and minimal competition. 3. Crop Safety: Rice plants rapidly metabolize cyhalofop-butyl into inactive compounds, allowing for targeted weed control without adverse effects on the crop.
Detailed Description: Cyhalofop-butyl 20% OD is a specialized herbicide formulated to address the challenges of grass weed infestations in direct-seeded rice cultivation. As a member of the aryloxyphenoxypropionate class, it functions by inhibiting the acetyl-CoA carboxylase (ACCase) enzyme, a pivotal component in the fatty acid synthesis pathway of grasses. This inhibition disrupts the production of essential lipids, leading to the cessation of cell membrane formation and growth in susceptible weeds. Upon foliar application, cyhalofop-butyl is swiftly absorbed and translocated to the meristematic regions of the plant, where it exerts its herbicidal action. The selectivity of cyhalofop-butyl is attributed to the rice plant's ability to rapidly degrade the active ingredient into non-toxic metabolites, thereby ensuring that the crop remains unharmed while the target weeds are effectively controlled. This herbicide is particularly efficacious against early-stage annual grasses, making timely application crucial for optimal results. Its formulation as an oil dispersion enhances adherence to leaf surfaces and facilitates penetration, even under less-than-ideal environmental conditions. Moreover, cyhalofop-butyl exhibits minimal soil residual activity, reducing the risk of affecting subsequent crops and promoting environmental sustainability.
Effective Against: · Rice (Direct-Seeded): o Barnyardgrass (Echinochloa crus-galli): A prevalent annual grass weed that competes aggressively with rice, leading to significant yield reductions if not managed effectively. o Chinese Sprangletop (Leptochloa chinensis): A fast-growing grass species that poses substantial competition to young rice plants, affecting their establishment and growth. o Crabgrass (Digitaria sanguinalis): An invasive grass weed that can outcompete rice seedlings for resources, necessitating timely control measures.
Registered Scope and Method of Use
*Note: Apply during the 2–3 leaf stage of the target grass weeds. Prior to application, drain the field to maintain moist soil conditions. After spraying, re-flood the field within 24 to 72 hours, maintaining a water depth of 3–5 cm for 5–7 days, ensuring the water does not submerge the rice seedlings to prevent potential phytotoxicity.
Technical Application Requirements: 1. Timing & Frequency: Apply when target grass weeds are at the 2–3 leaf stage to ensure optimal control. Limit to one application per crop season to prevent potential resistance development. 2. Application Technique: Utilize calibrated sprayers to achieve uniform and fine droplet distribution, ensuring thorough coverage of weed foliage. Employ a foliar spray method, focusing on the weed-infested areas. 3. Environmental Considerations: Avoid application during windy conditions or if rainfall is anticipated within 2–3 hours post-application to prevent drift and ensure maximum herbicidal activity. 4. Resistance Management: To mitigate the risk of resistance development, integrate cyhalofop-butyl into a comprehensive weed management program that includes crop rotation, use of herbicides with different modes of action, and cultural practices such as water management and mechanical weeding. |
