HPM Papro Insecticide - Buprofezin 15% + Acephate 35% WP for Rice Hopper Control

Key Benefits

• Dual-action pest control: Combines an insect growth regulator (Buprofezin) with a systemic neurotoxic agent (Acephate) for both immediate knockdown and long-term population suppression.
• Effective against hopper burn: Specifically targets Brown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH) in paddy, preventing the characteristic "hopper burn" damage that can destroy rice fields.
• Stops future generations: Buprofezin disrupts moulting in nymphs and makes eggs unviable, breaking the pest life cycle and preventing re-infestation.
• Long-lasting residual protection: Offers extended control for up to 20 days, reducing the need for frequent re-sprays and saving labour costs.
• Systemic action: Absorbed by the plant to reach hidden sucking pests feeding on stems and leaf undersides that contact sprays may miss.
• Helps manage resistance: Two different modes of action (IRAC Group 16 + Group 1B) work together, making it effective even against pests that have developed resistance to single-chemical products.
• Crop-safe when used correctly: Gentle on paddy crops when applied at the recommended dose, with minimal risk of phytotoxicity.

How It Works

HPM Papro uses a two-pronged attack strategy that targets pests at multiple life stages. The product contains two active ingredients that work through completely different mechanisms.

Acephate (35%): This is a systemic organophosphate insecticide that works on contact and through ingestion. Once absorbed by the plant, Acephate moves through the plant tissues. When hoppers feed on treated plant sap, Acephate enters their bodies and inhibits the enzyme acetylcholinesterase (AChE). This causes the insect's nerves to fire uncontrollably, leading to rapid paralysis and death. This provides the fast knockdown action that farmers see soon after spraying.

Buprofezin (15%): This is an insect growth regulator (IGR) from the thiadiazin chemical group. It works by blocking chitin synthesis — chitin is the hard material that forms an insect's outer shell or exoskeleton. When young nymphs try to moult and grow, their new skin fails to form properly, and they die during the moulting process. Buprofezin also suppresses egg-laying in adult females and makes existing eggs unviable, meaning they will not hatch. This dual effect on nymphs and eggs ensures that even after the adult hoppers are killed, the next generation cannot establish itself.

Together, these two modes of action provide immediate control of existing hopper populations while simultaneously preventing future outbreaks — making Papro a complete solution for hopper management in rice.

Technical Specifications

Parameter	Details
Brand Name	PaPro (HPM Chemicals & Fertilizers Ltd.)
Technical Name	Buprofezin 15% + Acephate 35% WP
Formulation Type	Wettable Powder (WP)
IRAC Mode of Action Code	Group 16 (Buprofezin) + Group 1B (Acephate)
Chemical Group	Thiadiazin + Organophosphate
Toxicity Label	Class II (Moderately Hazardous)
Registration No.	CIR-130480/2015-Buprofezin+Acephate(WP) (356)-336
Available Pack Sizes	250 gm, 500 gm, 1 kg
Manufacturer	HPM Chemicals & Fertilizers Ltd.

Recommended Dosage & Application

Crop	Target Pest	Dose per Acre	Water per Acre	Dose per Litre	PHI (Days)
Paddy (Rice)	Brown Plant Hopper (BPH)	500 gm	200 litres	2.5 gm	20 days
Paddy (Rice)	White Backed Plant Hopper (WBPH)	500 gm	200 litres	2.5 gm	20 days

Note: The per-hectare dosage is 1250 gm formulation (187.5 gm Buprofezin + 437.5 gm Acephate active ingredient) diluted in 500 litres of water.

When to Use

Apply HPM Papro at the early stages of hopper appearance for the best results. The ideal time is during the early tillering stage of the paddy crop, as soon as you spot the first signs of Brown Plant Hoppers or White Backed Plant Hoppers on the plants. Early application prevents the pest population from exploding and causing "hopper burn" — the drying and wilting of rice plants that happens when large numbers of hoppers suck sap from the base of the stems.

Regularly inspect your paddy fields, especially the base of the plants near the water level, where hoppers typically gather. If you see nymphs or adults, do not wait — spray immediately. Delaying application allows hoppers to multiply rapidly and cause irreversible damage.

Step by Step Usage Instructions

1. Check the pest level: Walk through your paddy field and check the base of plants for hopper nymphs and adults. Spray when you first see them, not after damage appears.
2. Prepare the spray solution: Fill your spray tank with clean water up to half the required volume (100 litres for a 200-litre tank).
3. Mix the product: Take the required amount of Papro (500 gm per acre). Make a slurry by mixing the powder in a small amount of water, then add it to the spray tank while stirring continuously.
4. Fill and mix: Add the remaining water to reach the full volume (200 litres per acre). Stir well to ensure the powder is fully dissolved and evenly mixed.
5. Spray correctly: Aim the spray nozzle towards the base of the rice plant stems — this is where hoppers feed and hide. Ensure thorough coverage of the lower parts of the plants.
6. Use full water volume: Do not reduce the water quantity. Using the full 200 litres per acre ensures deep canopy penetration and proper coverage of the stem base.
7. Clean up: After spraying, wash the spray tank and all equipment thoroughly with clean water. Dispose of rinse water away from water bodies.

Compatibility

Do NOT mix HPM Papro with alkaline products (such as certain micronutrients or copper-based fungicides), as high pH conditions can deactivate the Acephate component. If you need to mix with other agrochemicals, always perform a small jar test first — mix small quantities of each product in a glass jar with water and check for any reaction, settling, or clumping before preparing the full tank mix.

Precautions & Safety

• Personal protection: Always wear gloves, a face mask, and goggles while handling and spraying the product.
• During spraying: Avoid inhalation of spray mist. Do not eat, drink, or smoke while handling the product.
• After spraying: Wash hands, face, and all exposed skin thoroughly with soap and water. Wash your clothes separately.
• Environmental safety: This product is toxic to bees and fish. Avoid spraying near water bodies, ponds, or flowering weeds where bees may be active.
• Storage: Store in a cool, dry place away from food, feed, and children. Keep the product in its original container with the lid tightly closed.
• Disposal: Do not reuse empty containers for any purpose. Dispose of them safely according to local guidelines.

PHI / REI & Storage

Parameter	Details
PHI (Pre-Harvest Interval)	20 days — wait at least 20 days between last spray and harvest
Shelf Life	2 years from date of manufacture when stored properly
Storage Conditions	Cool, dry place away from direct sunlight and moisture