Gama Diafenthiuron 50% WP Insecticide - Broad Spectrum Control for Sucking Pests by Insecticides (India) Ltd

Gama is a broad-spectrum insecticide and acaricide from Insecticides (India) Limited (IIL), containing Diafenthiuron 50% WP (Wettable Powder). It is specially designed to control tough sucking pests like whiteflies, aphids, thrips, jassids, and mites that have developed resistance to older chemicals. Gama works on multiple crops including cotton, cabbage, cauliflower, chilli, brinjal, cardamom, watermelon, okra, tomato, and citrus.

What makes Gama different is its unique "pro-insecticide" technology. The chemical is relatively inactive when applied but gets converted into a powerful toxin inside the pest's body. This gives it a dual action — it works both as an insecticide (kills insects) and an acaricide (kills mites) in a single spray. Gama also has translaminar movement and a unique vapor action that helps reach pests hiding under leaves, making it highly effective even in dense crop canopies.

Farmers dealing with whitefly outbreaks, mite infestations, or pests that no longer respond to imidacloprid and similar chemicals will find Gama a reliable resistance-breaking option. It stops feeding almost immediately, preventing viral transmission, and helps restore plant health by clearing sooty mold caused by pest honeydew.

Key Benefits

• Stops feeding instantly — Pests become paralyzed within hours and stop damaging the crop, even though death takes 24-72 hours. This prevents viral disease spread.
• Dual action (insecticide + acaricide) — Controls both insects like whiteflies and aphids, and mites like red spider mites and yellow mites in one spray. No need for separate products.
• Unique vapor action — Under sunlight, the spray turns into a vapor that fumigates the crop canopy and reaches pests hiding on the undersides of leaves where normal sprays cannot reach.
• Translaminar movement — The chemical penetrates the leaf surface and moves from top to bottom, ensuring good coverage even when spraying is not perfect.
• Resistance breaker — Works effectively against pests that have developed resistance to imidacloprid, organophosphates, and other common insecticides.
• Greening effect — By controlling pests that produce honeydew, Gama clears sooty mold growth and helps leaves regain their natural green color, improving photosynthesis.
• Safe for beneficial insects — When used as directed, it is suitable for Integrated Pest Management (IPM) programs.

How It Works

Gama is a "pro-insecticide," which means it is not fully active in its original form. When the pest comes into contact with or ingests the spray, the insect's own digestive enzymes and sunlight convert the thiourea compound into a highly toxic carbodiimide. This activated form attacks the mitochondria — the energy-producing part of the insect's cells. It blocks ATP synthase, an enzyme critical for energy production. Without energy, the insect becomes paralyzed, stops feeding immediately, and eventually dies of starvation within 24 to 72 hours. Because the pest stops feeding right away, crop damage and viral transmission are prevented from the moment of application. The delayed mortality is normal — pests may remain on the leaf but they are not feeding or causing harm.

Technical Specifications

Parameter	Details
Brand Name	Gama
Manufacturer	Insecticides (India) Limited (IIL)
Technical Name	Diafenthiuron 50% WP
Formulation	Wettable Powder (WP)
IRAC Mode of Action Code	Group 12A (Mitochondrial Inhibitor)
Chemical Group	Thiourea Derivative
Toxicity Label	Blue Triangle / Yellow Triangle (Handle with Care)
Product Type	Insecticide + Acaricide (Broad Spectrum)
Available Pack Sizes	25 g, 250 g, 500 g, 1 kg

Recommended Dosage & Application

Important: Always follow the dose per acre for accurate results. Do not rely only on per-tank estimates.

Crop	Dose (g/Acre)	Water (L/Acre)	Approx Dose (g/Litre)	PHI (Days)
Cotton	240 - 300 g	200 L	1.2 - 1.5 g	21 - 28
Cabbage / Cauliflower	240 - 300 g	150 L	~ 2.0 g	7
Chilli / Brinjal	240 g	150 L	~ 1.6 g	3 - 5

PHI = Pre-Harvest Interval: Minimum days to wait between last spray and harvest.

When to Use

Apply Gama when you first notice pest infestation at the economic threshold level. For whiteflies, this is typically when you see 6-8 adults per leaf. Early application gives the best results because the product works by stopping feeding and starving the pest — catching them early prevents population buildup and crop damage. For best results, spray during the cooler parts of the day such as early morning or evening. Avoid spraying during peak sunlight hours or when rain is expected within 4-6 hours. For bee safety, always spray in the evening after bee activity has reduced. Use sufficient water volume (as per the dosage table) so that the vapor action can effectively fumigate the crop canopy and reach pests hiding under leaves.

Step by Step Usage Instructions

• Step 1 — Prepare the slurry: Never dump the powder directly into a full spray tank. Take the required quantity of Gama in a small bucket with some water and mix thoroughly to make a smooth, creamy slurry.
• Step 2 — Fill the tank: Fill the spray tank with half the required water. Add the prepared slurry to the tank while stirring continuously.
• Step 3 — Top up and mix: Add the remaining water and mix well to ensure uniform dispersion.
• Step 4 — Use the right nozzle: Use a hollow cone nozzle to create a fine mist. This helps the vapor action work better and ensures good coverage of the crop canopy, including leaf undersides.
• Step 5 — Spray evenly: Apply the spray uniformly over the crop, ensuring good coverage of all plant parts, especially the undersides of leaves where sucking pests hide.
• Step 6 — Safety during spraying: Wear gloves, mask, and goggles while mixing and spraying. Wash hands and exposed skin thoroughly with soap and water after application.

Compatibility

Gama is generally compatible with most neutral pesticides. However, do not mix it with highly alkaline substances such as Bordeaux mixture or lime sulphur, as alkalinity will break down the active ingredient and reduce effectiveness. Always perform a small jar test before mixing with any new product to check for physical compatibility.

Precautions & Safety

• Always wear personal protective equipment (PPE) — gloves, mask, and goggles — during mixing and spraying.
• Wash hands, face, and all exposed skin thoroughly with soap and water after handling or spraying.
• Do not eat, drink, or smoke while mixing or applying the product.
• Store in a cool, dry place away from food, feed, and children.
• Avoid spray drift to water bodies, as Diafenthiuron is highly toxic to fish and aquatic life. Do not spray near ponds, canals, or in rice-fish farming systems.
• Spray in the evening to protect bees and other pollinators.
• Do not use empty containers for storing food or water. Dispose of them safely.

Side Effects & Phytotoxicity

Gama (Diafenthiuron 50% WP) is highly toxic to fish and aquatic organisms. Avoid contamination of water sources. When used as per recommended dosage and timing, no phytotoxicity has been reported on the listed crops. However, always follow label instructions to avoid any risk of crop injury from over-application.

PHI / REI & Storage

Crop	PHI (Days)
Cotton	21 - 28 days
Cabbage / Cauliflower	7 days
Chilli / Brinjal	3 - 5 days

Storage: Store in a cool, dry place away from direct sunlight and moisture. Keep the container tightly sealed when not in use. Store away from food, animal feed, and children's reach.