Active ingredient and HPPD mode of action
- Contains Tembotrione 34.4% Suspension Concentrate (SC), belonging to the triketone chemical family (HRAC/WSSA Group 27).
- Inhibits the plant enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), which stops the biosynthesis of carotenoid pigments in susceptible weeds.
- Without protective carotenoids, sunlight destroys chlorophyll, causing distinctive bleaching (pure whitening) of weed leaves and rapid necrosis.
- Includes the safener Isoxadifen-ethyl, which accelerates herbicide breakdown within maize tissues to ensure crop safety.
Target weeds and application timing in maize
- Controls broadleaf weeds: Trianthema portulacastrum, Amaranthus viridis, Digera arvensis, and Commelina benghalensis.
- Controls grassy weeds: Echinochloa colona, Digitaria sanguinalis, and Dactyloctenium aegyptium.
- Application window: Spray post-emergence when maize is at the 2 to 4 leaf stage and weeds are actively growing with 2 to 3 leaves.
Mixing instructions and spraying precautions
- Always tank-mix with the recommended adjuvant (such as methylated seed oil / surfactant) to optimize foliar penetration.
- Use a knapsack or tractor-mounted sprayer fitted with flat-fan nozzles, maintaining a spray volume of 200 to 250 litres per hectare.
- Follow CIBRC approved label dosages, observe pre-harvest intervals, and apply when adequate soil moisture is present.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the active ingredient in Laudis herbicide?
Laudis contains Tembotrione 34.4% SC, an HPPD-inhibiting selective herbicide.
Why do weeds turn white after spraying Laudis?
It inhibits carotenoid biosynthesis, causing sunlight to destroy unprotected chlorophyll, resulting in bleached white foliage.
Is Laudis safe for maize crops?
Yes, it contains the safener Isoxadifen-ethyl, which enables maize plants to rapidly metabolize the herbicide safely.
Why is an adjuvant required with Laudis?
An adjuvant enhances droplet retention and penetration through the waxy cuticles of weed leaves.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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