Citane is a specialized herbicide with flazasulfuron, a sulfonylurea, known for controlling a broad spectrum of weeds. It manages unwanted plant growth in various non-crop settings, providing a targeted approach.
Understanding Citane Action and Target Weeds
Citane works by inhibiting the acetolactate synthase (ALS) enzyme in susceptible plants. This enzyme is crucial for amino acid synthesis, necessary for cell division and growth. When plants absorb flazasulfuron through their leaves and roots, this process is disrupted, leading to stunted growth. Visible symptoms, such as leaf discoloration and desiccation, appear within hours, with plant death occurring over 20 to 25 days.
Citane offers both pre-emergent and post-emergent activity, preventing weed germination and controlling existing weeds. It is effective against a wide range of annual and perennial broadleaf weeds, grasses, and sedges. Citane is commonly used in non-crop areas, including industrial sites, railways, paths, and turf management settings like golf courses and commercial lawns. Its selective nature targets weeds while sparing desirable plants.
Proper Application Techniques
Effective Citane application requires careful adherence to label instructions regarding mixing, dosage, and timing. For optimal performance, a non-ionic surfactant is recommended at 0.25 percent by volume. Thoroughly clean the spray tank before use, especially if it contained other herbicides.
Fill the spray tank halfway with water, activate agitation for uniform mixing, then add Citane, then fill to the desired level. Prepare only the amount needed for immediate use to avoid overnight storage.
Dosage rates for Citane vary, but broadcast applications should not exceed 3.0 ounces per acre, with a maximum of three applications per season. For post-emergence control, apply when broadleaf weeds are young (no larger than 2-4 inches) and grasses are less than 4 inches tall and before tillering. Post-emergence applications require 15-50 gallons of water per acre, with higher volumes for denser vegetation. For pre-emergence applications, rainfall or irrigation is necessary to activate the herbicide and form a soil barrier.
Use ground spray equipment with flat fan or flood nozzles for broadcast pre-emergence applications. For other applications, a medium or coarser droplet size is recommended. Maintain proper nozzle height (no more than 2 feet above ground or crop canopy) and appropriate pressure to minimize drift and ensure effective coverage.
Safety and Environmental Practices
Safe handling and application of Citane are essential for user and environmental protection. Applicators and handlers should wear personal protective equipment (PPE): a long-sleeved shirt, long pants, shoes plus socks, protective eyewear, and chemical-resistant gloves. After handling, wash hands thoroughly before eating, drinking, or using tobacco. Remove contaminated clothing immediately and wash it separately.
Avoid applying Citane directly to water or areas with surface water to prevent environmental contamination. It is highly toxic to aquatic life, especially aquatic plants; prevent runoff into water bodies. Do not apply when wind speeds exceed 10 mph or during temperature inversions to minimize spray drift. Dispose of unused product and empty containers according to label instructions, often on-site or at an approved facility. Store Citane in original containers in a cool, dry place, away from children and animals, and avoid excess heat.