Armaldo Herbicide (Penoxsulam 1.02% + Cyhalofop 5.1% OD)
Armaldo is a premium, selective post-emergence herbicide designed for rice cultivation. It's a "three-in-one" solution that provides comprehensive, broad-spectrum control over all major weed types: grasses, broadleaf weeds, and sedges.
Featuring an advanced Oil Dispersion (OD) formulation, Armaldo ensures fast absorption, better leaf coverage, and enhanced effectiveness, giving you a clean field with a single application.
Primary Use: A post-emergence herbicide for rice, providing broad-spectrum weed control and managing herbicide resistance.
Why Choose This Product? Key Benefits
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Fast-Absorbing OD Formulation: The advanced Oil Dispersion (OD) technology ensures the herbicide sticks to and penetrates weed leaves quickly, leading to faster results and improved rainfastness.
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Complete Broad-Spectrum Control: A "three-in-one" solution that effectively controls all major weed types in rice: grasses (like Echinochloa), sedges, and broadleaf weeds.
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Dual-Action Resistance Management: Combines two different modes of action (ALS + ACCase inhibitors) to effectively control weeds and serve as a powerful tool for managing herbicide resistance.
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Superior Efficacy: The pre-mixed combination is scientifically proven to be more effective than applying its components separately, providing weed control efficiency of 90% or more.
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Excellent Crop Safety: Armaldo is highly selective for both transplanted and direct-seeded rice when used as directed. It also has a "Green Triangle" label, indicating low acute toxicity.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Armaldo |
| Technical Name | Penoxsulam 1.02% + Cyhalofop-butyl 5.1% OD |
| IRAC MoA Code | Group 2 (ALS Inhibitor) + Group 1 (ACCase Inhibitor) |
| Chemical Group | Triazolopyrimidine + Aryloxyphenoxypropionate |
| Formulation | OD (Oil Dispersion) |
| Toxicity Label | Green Triangle (Category IV - Slightly toxic) |
How It Works: Mode of Action
Armaldo's power comes from its dual-mechanism of action that attacks weeds in two distinct ways:
- Penoxsulam (ALS Inhibitor - Group 2): This component is absorbed by leaves and roots. It systemically moves to the growing points, where it inhibits the ALS enzyme. This stops the production of essential amino acids, halting cell division and killing sedges and broadleaf weeds.
- Cyhalofop-butyl (ACCase Inhibitor - Group 1): This component is absorbed by leaves and systemically targets grassy weeds. It inhibits the ACCase enzyme, which is vital for fatty acid production. This prevents the formation of new cell membranes, leading to the collapse of the weed's growing points.
- Combined Effect: This dual-action stops weed growth, followed by chlorosis (yellowing) and complete necrosis (death) of the target weeds, ensuring a clean field.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Transplanted & Direct-Seeded) | Grassy Weeds: Echinochloa colona (Jungle Rice), Echinochloa crusgalli (Barnyard Grass), Leptochloa chinensis. |
| Rice (Transplanted & Direct-Seeded) | Sedges: Cyperus difformis (Smallflower Umbrella Sedge), Cyperus iria (Rice Flatsedge). |
| Rice (Transplanted & Direct-Seeded) | Broadleaf Weeds: Eclipta alba (False Daisy), Ludwigia quadrifoliata (Water Primrose). |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Transplanted & Direct-Seeded) | 800 - 900 ml | 150 - 200 Litres | ~4.5 - 5.5 ml | 60 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply as a post-emergence spray at 15-20 Days After Transplanting (DAT) or Sowing (DAS). Alternatively, apply when weeds are at the 3-5 leaf stage.
- Mixing: Add the recommended amount of Armaldo to clean water. Mix well. CRITICAL: Never tank-mix Armaldo with 2,4-D, as this will cause the product to fail.
- Coverage: Ensure thorough coverage of weed foliage. Apply to moist soil. If the field is flooded, drain the water before spraying to expose the weeds, and re-flood 1-3 days later.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. What is the best time to apply Armaldo?
Apply Armaldo 15-20 days after transplanting or sowing, when weeds are in the 3-5 leaf stage. This is the critical period for preventing yield loss.
2. Will Armaldo control all weeds in my rice?
Yes, it is a broad-spectrum herbicide that controls all three major categories: grasses (like Barnyard Grass), sedges, and broadleaf weeds.
3. Can I mix Armaldo with 2,4-D?
No. Never mix Armaldo with 2,4-D or other Group 4 herbicides. This combination is antagonistic and will lead to a severe loss of efficacy and failure in grass control.
4. Are there any soil restrictions?
Yes. Do not apply Armaldo to newly levelled ground or soil with a high pH (above 7.8) or high salt content, as this may cause injury to the rice crop.
5. What is the benefit of the OD formulation?
The Oil Dispersion (OD) formulation helps the herbicide spread and stick to the weed leaf better. It enhances absorption and provides better rainfastness compared to other formulations.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application.
