HPM Bindass Fungicide - Tricyclazole 75% WP for Rice Blast Disease Control

HPM Bindass is a specialized systemic fungicide containing Tricyclazole 75% in Wettable Powder (WP) formulation, designed specifically for the control of Rice Blast disease caused by Pyricularia oryzae. Rice Blast is one of the most destructive diseases affecting paddy crops, appearing in three forms — Leaf Blast, Node Blast, and Neck Blast — each capable of causing significant yield loss if not managed in time.

Bindass works through a unique mode of action as a Melanin Biosynthesis Inhibitor (MBI). Instead of directly poisoning the fungus, it prevents the fungal spores from producing melanin, which is essential for the fungus to penetrate the rice leaf surface. Without melanin, the fungal infection structure remains soft and cannot pierce the plant tissue. This makes Bindass an excellent preventive fungicide that stops the disease before it enters the plant.

The product is rapidly absorbed by the rice plant within one hour of application and moves systemically towards the leaf tips, providing long-lasting protection for 14 to 21 days. It is highly stable against sunlight and moisture, making it well-suited for tropical conditions and the rainy season when blast disease is most severe. Additionally, Bindass is known for its phytotonic effect — it keeps the flag leaf green for longer, contributing to better grain filling, shiny grains, and higher yields with less chaff.

Key Benefits

• Rainfast within 1 hour: Gets absorbed quickly into the plant system. If it rains one hour after spraying, you do not need to re-apply.
• Systemic protection for 14–21 days: Moves upward inside the plant to protect new leaves and tips, providing long-lasting disease control with fewer sprays.
• Unique melanin-blocking action: Disarms the fungus mechanically by preventing it from penetrating the leaf surface — stops disease before it starts.
• Weather-stable in tropical conditions: Not easily destroyed by strong sunlight or moisture, making it effective even during the monsoon season.
• Phytotonic effect for better yield: Keeps the flag leaf green longer, resulting in heavier, shiny grains with less chaff and better quality harvest.
• Effective against all forms of Rice Blast: Controls Leaf Blast, Node Blast, and the most damaging Neck Blast at the panicle stage.
• Can also be used for seed treatment: Provides protection right from the nursery stage when used as a seed dresser.

How It Works

Bindass contains Tricyclazole, which belongs to the Triazolobenzothiazole chemical group and has a unique mode of action classified under FRAC Code 16.1 (Melanin Biosynthesis Inhibitor). Unlike conventional fungicides that kill the fungus directly, Bindass works by disarming it mechanically.

When the fungal spore of Pyricularia oryzae lands on the rice leaf, it normally produces melanin — a dark pigment that hardens the spore wall and helps build pressure inside a specialized structure called the appressorium. This pressure allows the fungus to pierce through the tough rice leaf surface and enter the plant tissue. Bindass blocks the production of this melanin. Without melanin, the appressorium remains soft and cannot generate enough pressure to puncture the leaf. The fungus is effectively stopped at the surface, unable to cause infection.

Once applied, Bindass is rapidly absorbed by the roots and leaves of the rice plant. It moves upward (acropetal translocation) towards the leaf tips — exactly where dew collects and blast infections typically begin. This systemic movement ensures that even new growth that emerges after spraying receives protection. The chemical remains active inside the plant for 14 to 21 days, providing extended defense against the disease.

Technical Specifications

Parameter	Details
Brand Name	Bindass
Manufacturer	HPM Chemicals & Fertilizers Ltd.
Technical Name	Tricyclazole 75% WP
Formulation	Wettable Powder (WP)
Chemical Group	Triazolobenzothiazole
Mode of Action (FRAC Code)	Group 16.1 (Melanin Biosynthesis Inhibitor - MBI)
Toxicity Label	Blue Triangle (Moderately Hazardous)
Available Pack Sizes	25 gm, 100 gm, 120 gm, 250 gm, 500 gm, 1 kg
HSN Code	3808
GST Rate	18%

Recommended Dosage & Application

The Golden Rule: Always follow the dose per acre for accurate results. Using less water than recommended may reduce efficacy.

Crop	Target Disease	Dose per Acre	Water per Acre	Dose per Litre	PHI (Days)
Paddy (Rice)	Leaf Blast	120–160 g	200 L	0.6–0.8 g	30
Paddy (Rice)	Neck Blast	120–160 g	200 L	0.6–0.8 g	30
Paddy (Rice)	Node Blast	120–160 g	200 L	0.6–0.8 g	30
Seed Treatment	Seed-borne Blast	—	—	3–4 g per kg seed	—

PHI (Pre-Harvest Interval): Minimum 30 days between last spray and harvest. For export Basmati rice, do not spray within 40 days of harvest due to strict residue limits (EU/USA regulations).

When to Use

Bindass is most effective when used as a preventive spray. The key is to apply it before the disease has a chance to establish inside the plant tissue.

• For Leaf Blast: Apply as soon as you notice the first small lesions or spots on leaves, or when weather conditions are humid and favorable for disease development. Early-stage application gives the best results.
• For Neck Blast: The most critical time to spray is at the Booting Stage — just before the panicle (grain head) emerges from the leaf sheath. This prevents the fungus from infecting the neck of the panicle, which can cut off grain filling entirely.
• For Node Blast: Apply at the first sign of dark lesions on the stem nodes.
• During monsoon: Since Bindass is rainfast within 1 hour and stable in moisture, it is an excellent choice for the rainy season when blast pressure is highest.
• Seed treatment: Use before sowing to protect young seedlings from early infection.

Step by Step Usage Instructions

1. Prepare the slurry: Since Bindass is a Wettable Powder (WP), first mix the required dose in a small bucket of water (about 1–2 litres) to make a smooth slurry. Stir well until no lumps remain.
2. Add to main tank: Fill the spray tank with half the required water. Add the slurry to the tank while stirring continuously.
3. Top up and agitate: Add the remaining water to reach the total volume (200 litres per acre). Keep the tank agitated or stirred during spraying to prevent the powder from settling at the bottom.
4. Spray uniformly: Apply the spray evenly over the entire crop. Ensure complete coverage of all foliage. The systemic action will help move the chemical to leaf tips, but good coverage ensures better results.
5. Post-spray: If rain occurs 1 hour or more after spraying, no re-application is needed as the product is already absorbed.
6. Clean equipment: Wash the spray tank and equipment thoroughly with water after use.

Compatibility

Bindass is physically compatible with common rice insecticides such as Cartap Hydrochloride (for Stem Borer) and Lambda-Cyhalothrin, as well as fungicides like Hexaconazole (for Sheath Blight). However, do not mix Bindass with alkaline substances such as Bordeaux Mixture or Lime Sulphur, as the high pH will break down the chemical and reduce its effectiveness. Always perform a small jar test before mixing with any new product to check for physical compatibility.

Precautions & Safety

• Personal Protective Equipment (PPE): Always wear gloves, a dust mask, and goggles while handling and spraying the product to avoid inhaling the powder.
• Hygiene: Wash hands and face thoroughly with soap and water after handling or spraying. Do not eat, drink, or smoke during application.
• Storage: Store in a cool, dry place away from food, feed, and drinking water. Keep out of reach of children and animals.
• Environmental safety: Tricyclazole is toxic to fish. Do not use Bindass in paddy fields where fish farming (aquaculture) is practiced, or near water bodies containing fish. Avoid spray drift onto water sources.
• Disposal: Do not reuse empty containers for any purpose. Dispose of them safely as per local regulations.

Side Effects & Phytotoxicity

• Fish toxicity: Tricyclazole is toxic to fish. Avoid use in rice-fish farming systems and near water bodies.
• Phytotonic effect (positive): Bindass is known to have a beneficial phytotonic effect — it keeps the flag leaf green for longer, which supports better photosynthesis and grain filling. This is not a side effect but an added benefit.
• No phytotoxicity has been reported when used at the recommended dosage. Always follow the recommended dose to avoid any risk of crop injury.

PHI / REI & Storage

Parameter	Details
Pre-Harvest Interval (PHI)	30 days (for domestic consumption). For export Basmati rice, avoid use within 40 days of harvest.
Rainfastness	1 hour after application
Persistence in plant	14–21 days
Storage conditions	Store in a cool, dry place away from direct sunlight and moisture