Solaro Herbicide
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Solaro Herbicide (Atrazine 50% WP) by PI Industries
The "Start Clean" Solution for Maize and Sugarcane Farmers.
Solaro (Atrazine 50% WP) is a trusted pre-emergence and early post-emergence herbicide designed to protect your crops during the most critical 30-45 days of growth. By creating a chemical barrier in the soil, Solaro stops broadleaf and grassy weeds before they can compete with your crop for sunlight and nutrients. Manufactured by PI Industries, it offers superior formulation quality ensuring better suspension and uniform coverage compared to standard generics.
Best For: Farmers looking for an affordable, reliable, and broad-spectrum weed control solution for Maize (Corn) and Sugarcane.
Why Choose This Product? Key Benefits
- ⏱️Perfect Timing: Applies effectively immediately after sowing (0-3 days) to kill weeds right at germination.
- ?️Crop Safety: Highly selective to Maize and Sugarcane; it kills the weeds but leaves your crop completely unharmed.
- ⏳Long-Lasting Residual Action: Stays active in the soil to provide protection for weeks, covering the critical competition period.
- ?️Rain Fastness: Once activated by soil moisture, it binds to the soil and resists washing away easily, ensuring consistent performance.
- ?Broad Spectrum Control: Effectively targets tough broadleaf weeds like Trianthema and Amaranthus, along with major grasses.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Solaro |
| Technical Name | Atrazine 50% WP |
| 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
Solaro works by disrupting the energy production of the weed. It is a systemic herbicide that is primarily absorbed through the roots.
- Absorption: The herbicide is applied to the soil. As weeds germinate, their roots absorb the chemical along with water.
- Translocation: It travels up the plant (via xylem) to the leaves and chloroplasts.
- Inhibition: It blocks Photosystem II, preventing the weed from converting sunlight into energy. This leads to starvation, yellowing (chlorosis), and death of the weed.
Note: Maize and Sugarcane have natural enzymes that break down Atrazine rapidly, which is why the crop survives while the weed dies.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Maize (Corn) | Trianthema monogyna (Carpet weed), Digera arvensis, Amaranthus spp., Echinochloa spp. |
| Sugarcane | Portulaca oleracea, Xanthium strumarium, Euphorbia spp., Barnyard grass, and other annual broadleaves. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Ensure soil has sufficient moisture at the time of application.
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 L | 2 g/L | -- |
| Maize (Heavy Soil) | 800 g | 200 L | 4 g/L | -- |
| Sugarcane | 400 - 1600 g | 200 L | 2 - 8 g/L | -- |
*PHI = Pre-Harvest Interval: Use as per statutory guidelines. *Dose varies by soil type (Heavy clay soils need higher doses than sandy soils).
How to Apply: Best Practices
- Timing: Pre-Emergence: Apply immediately after sowing (0-3 days). Early Post-Emergence: Can be applied up to the 2-leaf stage of weeds.
- Mixing: This is a Wettable Powder (WP). Pre-mix the required quantity in a bucket with a little water to form a thin paste, then pour into the spray tank and fill with water. Keep agitated.
- Coverage: Use a flat fan or flood jet nozzle. Ensure the soil is moist at the time of application for the chemical to activate.
- Safety: Always wear PPE (gloves, mask, goggles) as the powder can cause dust inhalation. Wash hands thoroughly after use.
Frequently Asked Questions
1. Can Solaro be used on crops other than Maize or Sugarcane?
No. Atrazine is highly specific. Using it on crops like pulses, cotton, or vegetables can severely damage or kill the crop.
2. Does Solaro control established weeds?
Solaro is most effective on germinating weeds. It has limited control on established weeds (weeds with more than 3-4 leaves). For larger weeds, a post-emergence herbicide like Topramezone (Elite) is recommended.
3. Can I mix Solaro with other herbicides?
Yes, it is often tank-mixed with Pendimethalin for enhanced grass control or with Topramezone (Elite) for post-emergence knockdown in maize. Always perform a jar test first.
4. Why is soil moisture important for Solaro?
Solaro needs moisture to dissolve and form a barrier in the soil. If the soil is bone dry, the herbicide will not activate, and weeds may escape.
5. What happens if it rains heavily after spraying?
Atrazine has relatively low water solubility, which prevents it from washing away easily. However, extremely heavy rain immediately after application on sandy soil may reduce efficacy or cause temporary crop stunting.
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.