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Thiamethoxam 25% WG – Advanced Systemic Insecticide for Crop Protection

This is a modern insecticide that belongs to the neonicotinoid group. It contains Thiamethoxam 25% in the form of water dispersible granules. This formulation, when put in water, disperses evenly without forming lumps and this ensures the insecticide spreads properly on crop leaves and also gets absorbed inside the plant tissues. The chemical is systemic in nature, which means once applied it is taken up by the roots and leaves and then moves through the xylem sap in the entire plant body. Because of this systemic movement, even the new growing parts of the plant are protected from insect attack.

Mode of action of Thiamethoxam 25% WG

The main mode of action of Thiamethoxam is that it binds strongly to the nicotinic acetylcholine receptor in the insect nervous system. This receptor is very important for nerve signal transmission in insects. When the chemical binds to this site, the insect nervous system gets disturbed which results in continuous nerve excitation. The insects stop feeding within a few hours of contact or ingestion and soon become paralyzed and die. That is why growers see quick knock down effect after application.

Benefits

Thiamethoxam gives long duration protection because after being absorbed in the plant it remains active for several days. The WG formulation makes handling safer compared to wettable powder or dust because there is less chance of inhalation. It dissolves easily in spray solution and spreads uniformly on the crop surface. This ensures better coverage and higher efficiency even at low dose. Growers also observe that regular use of Thiamethoxam 25% WG improves crop vigour since the plants are not stressed by pest attack and nutrients remain available for growth.

Recommendations

 

Crop(s) Common Name of Disease Dosage
(gm/acre)		 Dilution in Water (Litre) Waiting Period (days)
Rice (Paddy) Stem borer, Gall midge, Leaf folder, White backed plant hopper, Brown planthopper, Green leaf hopper, Thrips 40 200 – 300 14
Cotton Jassid, Aphid, Thrips 40 200 – 300 21
Whitefly 80 200 – 300 21
Okra (Bhindi) Jassid, Aphid, Whitefly 40 200 – 400 05
Mango Hoppers 40 400 30
Wheat Aphid 20 200 21
Mustard Aphid 20-40 200 – 400 21
Tomato

(Foliar application)

 Whitefly 80 200 05
(Apply first spray during initial appearance of pest and repeat 2 – 3 sprays at 10 – 15 days interval depending on the level of pest intensity)
Brinjal

(Foliar application)

 Whitefly 80 200 03
(Apply first spray during initial appearance of pest and repeat 2 – 3 sprays at 15 – 21 days interval depending on the level of pest intensity)
Tea Mosquito bug 40 160- 200 07
Potato Aphids: 

Foliar Application 

Soil drench

 4080 200160 – 200 7777
Citrus Psylla 40 400 20
(Apply first spray during initial appearance of pest and repeat 2 – 3 sprays at 15 – 21 days interval, depending on the level of pest intensity)
Rice – Nursery (Soil Drenching) Green leaf hopper, Thrips, Whorl Maggot 800 250 ml/sq.mtr 86
Cumin Aphids 40 200 05
Grapes – Soil drench Mealy bug, Thrips, Flea beetle 160 200 ml/vine 10
(Apply first soil drench immediately after pruning followed by another drenching at 30-40 days interval coinciding with berry development stage. Apply the product near root zone of vines)
Grapes – Foliar application Mealy bug, Thrips, Flea beetle 40 400 15
(1st spray when insect pest reaches ETL. Repeat one spray at 10-15 days interval depending upon pest severity)

Frequently Asked Questions (FAQs)

Thiamethoxam 25% WG is a systemic insecticide in water dispersible granule form. WG means when you add it to water, it dissolves uniformly and gives better coverage compared to dust or wettable powders. It also reduces dustiness, which makes it safer to handle and spray.
It targets the nervous system of the insect. The chemical binds to nicotinic acetylcholine receptors, which are responsible for transmitting nerve signals. Once these receptors are disturbed, the insect cannot feed properly and becomes paralyzed. Within a short time, the pest dies.
Since the insecticide is systemic, it enters into the plant sap and moves throughout the plant body. This gives protection not only to sprayed leaves, but also to the new leaves that come after spray. Generally, growers can expect protection for ten to fourteen days depending on crop stage and pest pressure.
Yes, when used as per recommendation, it is safe for crops. The WG formulation is also safer for applicators because there is less dust and easy mixing. Growers should always wear protective clothing while spraying to avoid unnecessary exposure.