Active Ingredient and Bleaching Mode of Action
Tynzer contains Topramezone, a member of the pyrazolone chemical class formulated as a suspension concentrate.
It works by inhibiting the 4-hydroxyphenylpyruvate dioxygenase (HPPD) enzyme, disrupting carotenoid biosynthesis in susceptible weeds.
Without carotenoid sun-shielding, photosynthetic chlorophyll molecules undergo light-induced destruction, resulting in characteristic whitening and plant death within days.
- Formulation: 33.6 percent Suspension Concentrate (SC)
- HPPD inhibition: Causes rapid chlorosis and complete foliar bleaching of target weed foliage
- Crop selectivity: Maize hybrids metabolize the molecule safely without suffering vegetative stunting
Target Weed Spectrum and Application Timing
Tynzer is registered for controlling complex mixed weed infestations in field corn, sweet corn, and baby corn.
Foliar applications should be made post-emergence when weeds are young and actively growing at the two to four leaf stage.
- Broadleaf weeds: Controls Trianthema, Amaranthus, Commelina, Digera, and Celosia species
- Grassy weeds: Effectively suppresses Echinochloa colona, Dactyloctenium, and Eleusine indica grasses
- Application window: Spray between fifteen and twenty-five days after maize planting
Adjuvant Requirement and Spraying Best Practices
Tynzer must be applied with its recommended methylated seed oil adjuvant (Flux) to ensure droplet spreading and wax penetration.
Adequate soil moisture is critical at spraying to ensure active weed metabolism and rapid systemic chemical absorption.
- Adjuvant pairing: Always mix the designated adjuvant into the spray solution following label instructions
- Water volume: Use clean, silt-free water with flat fan nozzles for uniform broadcast coverage
- Pre-harvest interval: Observe recommended harvest intervals before harvesting green maize cobs
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active chemical in BASF Tynzer?
Tynzer contains Topramezone 33.6% SC, a selective post-emergence HPPD inhibitor herbicide for maize.
Why is an adjuvant required when spraying Tynzer?
The adjuvant enhances droplet retention, dissolves weed leaf waxes, and facilitates rapid foliar absorption of Topramezone.
Is Tynzer safe for sweet corn and baby corn?
Yes, Topramezone exhibits exceptional physiological crop safety in grain corn, sweet corn, and baby corn.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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