Gayab-Atrazien 50% Wp
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Gayab Herbicide (Atrazine 50% WP) by Coromandel
The Ultimate Pre-Emergence Weed Solution for Maize and Sugarcane
Stop weeds before they steal your crop's nutrition. Gayab (Atrazine 50% WP) is a powerful, broad-spectrum herbicide designed to protect high-value crops like Maize (Corn) and Sugarcane. Manufactured by Coromandel International (Gromor), it acts as a soil shield, preventing weed seeds from germinating and ensuring your crop gets 100% of the sunlight and nutrients it needs.
Best for: Farmers facing labor shortages who need a cost-effective, "spray-and-forget" solution for early-season weed control.
Why Choose Gayab? Key Benefits
- ⏱️Early Action Protection: Applied immediately after sowing (Pre-Emergence), it kills weeds as they sprout, giving your crop a head start.
- ?️Broad Spectrum Control: Effectively eliminates both tough grasses (monocots) and broadleaf weeds (dicots) in a single spray.
- ⏳Long-Lasting Residual Effect: Stays active in the soil to provide prolonged weed control during the critical first 4-6 weeks of crop growth.
- ?️Rain-Activated Power: Works best with soil moisture. Rain or irrigation helps move the chemical into the root zone where weed seeds hide.
- ?Crop Safety Mechanism: Safe for Maize and Sugarcane due to their natural ability (GST enzyme) to detoxify the chemical rapidly.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Gayab (Coromandel International) |
| Technical Name | Atrazine 50% WP (Wettable Powder) |
| IRAC MoA Code | Group 5 (Photosynthesis Inhibitor) |
| Chemical Group | Chlorotriazine |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Gayab works by starving weeds of energy. It is a systemic herbicide that is absorbed through the roots and foliage.
[Image of photosynthesis electron transport chain inhibition by herbicides]- Absorption: Upon spraying, the herbicide creates a chemical layer on the soil. Germinating weeds absorb it through their roots.
- Blockade: It travels up the plant and binds to the D1 protein in the chloroplasts, specifically blocking Photosystem II.
- Elimination: This stops the weed from processing sunlight (photosynthesis). The weed turns yellow (chlorosis), then brown, and finally dies from energy starvation and oxidative stress.
Note: Maize and Sugarcane naturally break down the chemical before it hurts them, ensuring selectivity.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Maize (Corn) | Trianthema (Carpet Weed), Amaranthus, Barnyard Grass, Digera arvensis. |
| Sugarcane | Purslane, Carrot Grass (Parthenium), Cocklebur, Barnyard Grass. |
| Other | Suppression of annual grasses and broadleaf weeds in non-crop areas. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Gayab is a powder—ensure it is pre-mixed into a slurry before adding to the main tank.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Maize (Light Soil) | 400 g | 200 - 280 L | ~ 2 g | As per local advisory |
| Maize (Heavy Soil) | 800 g | 200 - 280 L | ~ 3-4 g | As per local advisory |
| Sugarcane | 400 - 1600 g | 200 - 280 L | ~ 2-6 g | As per local advisory |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Since Gayab is used Pre-Emergence, PHI covers the growing season.
How to Apply: Best Practices
- Timing: Apply "Pre-Emergence," meaning immediately after sowing seeds but before weeds or crops sprout.
- Mixing: Do not dump powder directly into the tank. Mix with a small amount of water first to make a smooth paste (slurry), then add to the main tank.
- Coverage: Use a Flat Fan or Flood Jet nozzle. Ensure the soil is moist at the time of application for activation.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Note: There is no specific antidote; treat symptomatically.
Frequently Asked Questions
1. Can I use Gayab on Cotton or Soybeans?
NO. Gayab is highly specific to Maize and Sugarcane. Using it on Cotton, Soybean, or Vegetables will kill the crop completely.
2. Does Gayab kill established weeds?
It is most effective on weed seeds (pre-emergence). It can burn the leaves of small emerged weeds (2-3 leaf stage), but it will not kill the roots of large, established weeds.
3. Can I mix Gayab with Paraquat?
Avoid direct mixing. Mixing Atrazine WP directly with Paraquat can cause clumping (curdling) that blocks nozzles. If necessary, mix them separately in water before combining.
4. Why is soil moisture important?
Gayab needs moisture to spread into the soil and reach the weed seeds. If the soil is completely dry, the result will be poor.
5. What is the shelf life?
When stored in a cool, dry place in original packaging, the product typically maintains stability for 2 years.
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. Caution: Avoid use in areas with high groundwater levels.
