HPM Wardon (Fenobucarb BPMC 50% EC) - Carbamate Insecticide for Rice Plant Hoppers

HPM Wardon is a carbamate insecticide containing Fenobucarb (BPMC) 50% EC (Emulsifiable Concentrate). It is a trusted solution for controlling plant hoppers and leafhoppers in rice crops. The active ingredient, Fenobucarb (also known as BPMC), is a low mammalian toxic carbamate that works primarily as a contact poison with fast killing action and moderately long residual activity.

Wardon is specifically designed to target Brown Plant Hopper (BPH) and Green Leaf Hopper (GLH) — two of the most damaging pests in paddy cultivation. These sap-sucking insects weaken the plant, reduce yield, and can cause complete crop loss if not controlled in time. HPM Wardon provides reliable control with quick knockdown, making it a go-to choice for rice farmers during hopper outbreaks.

The product is non-phytotoxic to rice, meaning it does not harm the crop when used as recommended. It is also reported to be harmless to beneficial predatory insects and pollinators, making it a relatively safer option within an integrated pest management (IPM) program. Available in multiple pack sizes (250 ml, 500 ml, 1 litre, and 100 ml), Wardon is suitable for both small and large-scale rice farmers.

Key Benefits

• Fast knockdown action against Brown Plant Hopper and Green Leaf Hopper in rice — stops pest damage quickly during outbreaks
• Moderately long residual activity provides extended protection after application, reducing the need for frequent sprays
• Low mammalian toxicity makes it safer for farmers and farm workers to handle compared to many other chemical insecticides
• Non-phytotoxic to rice — does not harm the crop when used at recommended doses
• Safe to beneficial predatory insects and pollinators, supporting natural pest control in the field
• Acts as a contact poison, effective when the spray directly reaches the target pests hiding in the lower parts of the rice plant
• Available in multiple pack sizes (250 ml, 500 ml, 1 litre) to suit different farm sizes and budgets

How It Works

HPM Wardon contains Fenobucarb (BPMC), a carbamate insecticide that works by inhibiting the acetylcholinesterase (AChE) enzyme in the nervous system of insects. This enzyme is essential for breaking down acetylcholine, a neurotransmitter that transmits nerve signals. When AChE is blocked, acetylcholine accumulates at nerve junctions, causing continuous nerve stimulation. This leads to uncontrolled muscle movement, paralysis, and eventually death of the insect.

Wardon is a non-systemic insecticide, meaning it does not get absorbed and transported inside the plant. Instead, it works primarily as a contact poison — the spray must directly hit the pest for effective control. This is why thorough spray coverage, especially on the lower parts of the rice plant where hoppers congregate, is critical for success. The product also has some stomach action if ingested by the pest while feeding.

Fenobucarb has a relatively fast killing action, so farmers can see results within hours of application. Its moderately long residual activity means it continues to protect the crop for some days after spraying, reducing the need for frequent reapplication. The product is formulated as an Emulsifiable Concentrate (EC), which mixes easily with water to form a stable spray solution.

Technical Specifications

Recommended Dosage & Application

Target Crop: Rice (Paddy)

Target Pests: Brown Plant Hopper (BPH), Green Leaf Hopper (GLH)

Dosage: 0.2 to 1.6 litres per acre (depending on pest pressure and crop stage)

Method: Foliar spray — mix the required quantity of Wardon with water and spray thoroughly on the crop, ensuring good coverage on the lower parts of the plant where hoppers are found.

Note: Always refer to the product label for the exact dosage recommendation for your specific crop stage and pest intensity. The information provided here is for reference only.

When to Use

HPM Wardon should be used when Brown Plant Hopper or Green Leaf Hopper infestation is noticed in the rice crop. These pests are most active during the vegetative to reproductive stages of the crop. Early signs of infestation include yellowing of leaves, stunted growth, and the presence of hoppers at the base of the plant near the water level. In severe cases, "hopper burn" — where patches of the field turn brown and dry — can be seen.

Apply Wardon at the first sign of hopper infestation for best results. Since it works as a contact poison, timely application when pest populations are still low gives better control. Delayed application when hoppers are already in high numbers may require higher dosage or repeat sprays. Regular field monitoring, especially during warm and humid weather conditions that favour hopper buildup, is recommended.

Step by Step Usage Instructions

1. Check pest level: Inspect the rice field for Brown Plant Hopper or Green Leaf Hopper presence. Look at the base of the plants near water level where hoppers typically gather.
2. Calculate required quantity: Measure the correct amount of Wardon based on your field size and pest pressure (0.2 to 1.6 litres per acre as per recommendation).
3. Prepare spray solution: Fill the spray tank with half the required water. Add the measured quantity of Wardon and mix well. Add the remaining water and stir again to form a uniform emulsion.
4. Spray application: Use a knapsack sprayer or power sprayer with a good nozzle. Spray thoroughly, directing the spray towards the base of the rice plants where hoppers hide. Ensure complete coverage of the lower stem and tillers.
5. Timing: Apply in the morning or late afternoon when temperatures are cooler and wind is low. Avoid spraying during hot sun or when rain is expected within 4-6 hours.
6. Post-application: Monitor the field after 24-48 hours to check pest control. Re-apply only if needed and as per recommended intervals.

Precautions & Safety

• Wear protective clothing including gloves, mask, and goggles while handling and spraying the product
• Avoid inhalation of spray mist and contact with skin, eyes, or clothing
• Wash hands and exposed skin thoroughly with soap and water after handling
• Do not eat, drink, or smoke while handling or applying the product
• Keep the product away from food, feed, and drinking water
• Store in a cool, dry place away from direct sunlight and out of reach of children
• Avoid spray drift to water bodies, grazing areas, and non-target crops
• Do not contaminate ponds, rivers, or water sources with the product or its containers

Side Effects & Phytotoxicity

HPM Wardon is non-phytotoxic to rice when used at recommended doses, meaning it does not cause damage to the rice crop. However, as with all chemical pesticides, misuse or over-application may lead to crop stress. The product is reported to be harmless to beneficial predatory insects and pollinators, making it suitable for use in IPM programs. Always follow the recommended dosage to avoid any unintended effects.

First Aid & Antidote

Symptoms of Poisoning: Salivation, watery eyes, pinpoint eye pupils, blurred vision, muscle tremors, difficulty in breathing, excessive sweating, abdominal cramps, nausea, vomiting, diarrhea, weakness, headache. In severe cases, convulsions, unconsciousness, and respiratory failure may occur.

First Aid: In case of poisoning, remove the patient to fresh air immediately. If swallowed, induce vomiting by tickling the back of the throat. If skin or clothes are contaminated, remove contaminated clothing and wash affected parts with soap and water. If eyes are affected, wash with plenty of clean water. In case of accidental poisoning, call a physician immediately.

Antidote: Atropine sulphate administered intramuscularly or orally. The patient should be observed for several hours following exposure, and atropine sulphate may be re-administered if symptoms persist or recur.

PHI / REI & Storage

Shelf Life: 2 years from the date of manufacture when stored in original unopened containers under normal storage conditions.

Storage: Store in a cool, dry place away from direct sunlight, heat, and moisture. Keep in original containers tightly closed. Store separately from food, feed, and animal feed. Keep out of reach of children and unauthorized persons.