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Gilardo® Herbicide (Topramezone 33.6% SC): The Specialist for Maize Weed Control
Unlock the full yield potential of your maize crop with Gilardo®, the advanced post-emergence solution designed to tackle the toughest grasses and broadleaf weeds.
Maize farming is evolving, and so are the weeds. Traditional manual weeding is expensive, and older chemicals often fail against stubborn grasses like Echinochloa. Gilardo® (Topramezone) enters the field as a high-tech "rescue" chemistry. It is specifically engineered to control weeds that have escaped pre-emergence sprays, offering a clean field during the crop's most critical growth period.
Best For: Farmers looking for complete control over barnyard grass and broadleaf weeds in Field Corn, Sweet Corn, and Popcorn.
Why Choose This Product? Key Benefits
- ⏱️Rapid Rainfastness: Absorbs into the plant system within just 2 hours, making it perfect for the unpredictable monsoon (Kharif) season.
- ?️Superior Crop Safety: Safe for use on Field Corn, Popcorn, and Sweet Corn. It targets weed enzymes without harming the maize plant.
- ⏳Systemic Action: Moves both up and down within the weed (acropetal and basipetal), killing the plant from the tip to the root to prevent regrowth.
- ?️Flexible Timing: Offers a wide application window (2–4 leaf stage of weeds), acting as an effective rescue treatment when pre-emergence sprays fail.
- ?Broad Spectrum Control: Effectively eliminates both narrow-leaf grasses (like Barnyard grass) and tough broadleaf weeds (like Congress grass).
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Gilardo® |
| Technical Name | Topramezone 33.6% SC |
| IRAC MoA Code | Group 27 (HPPD Inhibitor) |
| Chemical Group | Pyrazolone ($C_{16}H_{17}N_{3}O_{5}S$) |
| Formulation | Suspension Concentrate (SC) |
| Toxicity Label | Danger (Handle with caution/PPE) |
How It Works: Mode of Action
Gilardo® works by starving the weed of its natural sun protection. It is an HPPD inhibitor, often called a "bleacher."
- Absorption: After spraying, the active ingredient is absorbed by the leaves and roots, moving rapidly to the growing points of the weed.
- Enzyme Blockage: It inhibits the 4-HPPD enzyme, which is essential for creating carotenoids (pigments that protect chlorophyll from sunlight).
- Bleaching & Death: Without carotenoids, the sunlight destroys the weed's chlorophyll. The weed turns white (bleaches) at the growing tips and dies within days.
Note: You may see slight whitening on maize leaves under stress, but the crop metabolizes the chemical quickly and recovers without yield loss.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Maize (Field Corn) | Barnyard Grass (Echinochloa spp.), Crowfoot Grass, Crabgrass |
| Sweet Corn & Popcorn | Congress Grass (Parthenium), False Amaranth, Cock's Comb |
| Commercial Hybrids | Indian Goosegrass, Swollen Finger Grass |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. For best results, use the recommended tank mix with Atrazine (Brand name: Etre).
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Maize (Standard) | 30 ml | 150 - 200 L | ~0.2 ml | Follow Label |
| Tank Mix (w/ Etre) | 30 ml + 500g Etre | 150 - 200 L | Mix carefully | Follow Label |
| MSO Adjuvant | MANDATORY | - | 2 ml / Litre | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Always use the specified adjuvant (MSO) for efficacy.
How to Apply: Best Practices
- Timing: Apply when weeds are at the 2 to 4 leaf stage. This is typically 15–25 days after sowing. Late application leads to poor control.
- Mixing: The use of Methylated Seed Oil (MSO) at 2ml/L water is mandatory. It dissolves the waxy coating on grass leaves, allowing the medicine to enter.
- Coverage: Use a flat fan or floodjet nozzle. Ensure uniform coverage of weed foliage. Do not spray if the crop is under severe drought stress.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spray drift to nearby vegetable crops.
Frequently Asked Questions
1. Why must I use MSO Adjuvant with Gilardo?
Topramezone is lipophilic (oil-loving). Weeds like Echinochloa have waxy leaves. The MSO dissolves this wax, acting as a key to let the herbicide inside the plant. Without it, the spray may fail.
2. Can I mix Gilardo with Atrazine?
Yes, it is highly recommended. The standard "Kit" includes Atrazine (Etre). This combination attacks weeds in two different ways (HPPD + PSII inhibition), providing faster kill and preventing resistance.
3. Is it safe for Popcorn or Sweet Corn?
Yes, Gilardo has a high safety profile for specialty corn varieties, unlike many other herbicides that can cause severe damage.
4. What if it rains after spraying?
Gilardo is rainfast within 2 hours. If it rains 2 hours after you finish spraying, the efficacy will not be reduced.
5. My corn leaves turned slightly white. Is this bad?
Transient bleaching can occur under stress or overlaps. Maize metabolizes the chemical quickly, and the green color usually returns within 1-2 weeks with no impact on yield.
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. Warning: This product may damage fertility or the unborn child. Pregnant women should strictly avoid handling this product.
