Parry Ratna
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Parry Ratna Insecticide (Cartap Hydrochloride 4% G)
The Ultimate Solution for Stem Borer and Leaf Folder Control in Paddy.
Parry Ratna by Coromandel International is a trusted systemic insecticide designed specifically for rice farmers. Built on the legacy of E.I.D. Parry, this product uses Cartap Hydrochloride to provide complete protection against chewing and sucking pests. Unlike sprays that wash away, these granules work from the inside out, keeping your crop safe from the "Dead Heart" and "White Ear" stages.
Best For: Farmers looking for a cost-effective, easy-to-use granule application that stops pest damage instantly.
Why Choose This Product? Key Benefits
- ⏱️Immediate "Stop-Feed" Action: Pests stop eating your crop the moment they ingest the poison, preventing further damage immediately.
- ?️Systemic Protection: The medicine is absorbed by the roots and spreads to the stem and leaves, killing pests hidden inside the plant.
- ⏳Long-Lasting Control: A single application provides extended protection against Stem Borers during critical growth stages.
- ?️Rain & Water Resistant: The granules dissolve rapidly in paddy water and are absorbed quickly, making them effective even in wet conditions.
- ?Double Action: Effective against both chewing pests (like borers) and certain sucking pests, offering broad-spectrum safety.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Parry Ratna |
| Technical Name | Cartap Hydrochloride 4% G |
| IRAC MoA Code | Group 14 (Nereistoxin Analogue) |
| Chemical Group | Nereistoxin Analogue |
| Formulation | Granules (G) |
| Toxicity Label | Moderately Toxic (Requires PPE) |
How It Works: Mode of Action
Parry Ratna uses a unique bio-inspired chemistry derived from marine worms. It attacks the nervous system of the insect in three steps:
- Systemic Absorption: Upon broadcasting, the granules dissolve in water. The rice roots drink up the medicine, transporting it to the stem and leaves via the xylem.
- Synaptic Block: When the larva (worm) bites the plant, the chemical enters its body and blocks nerve signals (Nicotinic Acetylcholine Receptor antagonist).
- Starvation & Death: The pest is instantly paralyzed and cannot eat ("Stop-Feed" effect). It eventually dies from starvation, preventing further crop damage.
Note: Because it works from the inside, it effectively kills stem borers that are hiding deep inside the plant stem.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Yellow Stem Borer (Dead Heart/White Ear) |
| Paddy (Rice) | Leaf Folder |
| Paddy (Rice) | Whorl Maggot |
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 (kg / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Paddy (Stem Borer) | 7.5 kg - 10 kg | N/A (Broadcast) | N/A | 21 Days |
| Paddy (Leaf Folder) | 7.5 kg - 10 kg | N/A (Broadcast) | N/A | 21 Days |
| Other Field Crops | Not Recommended | - | - | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply 15-20 days after transplanting (DAT) for early prevention, and again at 45-50 DAT (Panicle initiation) to prevent White Ear.
- Mixing: Do NOT mix with alkaline substances like Lime or Bordeaux mixture, as this destroys the chemical effectiveness.
- Coverage: Maintain 2-3 inches of standing water in the field for 3-4 days after application to ensure the granules dissolve and reach the roots.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not apply near cotton fields as it causes crop burn.
Frequently Asked Questions
1. Can I use Parry Ratna on Cotton or Chilli?
No. Parry Ratna (Cartap) can cause severe phytotoxicity (burning) on crops like Cotton and Tobacco. It is strictly recommended for Paddy.
2. What is the difference between Parry Ratna and Gromor 20:20:0:13?
Parry Ratna is an insecticide to kill pests. Gromor 20:20:0:13 is a fertilizer (Parry Super) used to provide nutrition (NPK + Sulphur) to the plant.
3. Can I mix Parry Ratna with Urea?
Yes, granular insecticides are often broadcasted along with Urea or Sand to ensure uniform distribution across the field.
4. How long does the protection last?
When applied correctly with standing water, Parry Ratna provides systemic protection for approximately 15 to 20 days.
5. What is CoroRatna?
CoroRatna is a different product in the same family—it is an organic Neem Cake soil conditioner used to improve soil health and control nematodes.
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.
