Mezonex – Topramezone 33.6% SC
Mezonex is a herbicide manufactured by MaxxGro Agrology Limited, containing Topramezone 33.6% as a suspension concentrate (SC) formulation. It is used for the post-emergence control of a broad spectrum of grassy and broad-leaved weeds, including Eleusine indica, Digitaria sanguinalis, Dactyloctenium aegyptium, Echinochloa spp., Chloris barbata, Parthenium hysterophorus, Digera arvensis and Amaranthus viridis, in maize. Topramezone is applied together with a methylated seed oil (MSO) adjuvant as per the approved label.
As a suspension concentrate, Mezonex is diluted in water, along with the recommended MSO adjuvant, before spray application. The product is intended for use strictly as per the approved crop, weed, dose and timing recommendations on the product label for maize.
| CROP | Common Name of Pest | Dosage / Acre | Dilution in Water (L/acre) | Waiting Period (Days) |
| Maize (add MSO adjuvant at 2 ml per litre of water) | Eleusine indica, Digitaria sanguinalis, Dactyloctenium aegyptium, Echinochloa spp., Chloris barbata, Parthenium hysterophorus, Digera arvensis, Amaranthus viridis, Physalis minima, Alternanthera sessilis, Convolvulus arvensis, Celosia argentea | 10.2-13.6 g A.I.
30.4-40.5 ml formulation |
152 | 83 |
- Contains Topramezone 33.6% as the active ingredient
- Formulated as a Suspension Concentrate (SC)
- Herbicide category product for weed management
- Registered use in maize
- Controls a broad spectrum of grassy and broad-leaved weeds
- Applied with a recommended MSO adjuvant; HPPD-inhibiting mode of action
Topramezone belongs to the pyrazolone chemical group and inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), which is required for carotenoid biosynthesis in plants. Blocking this enzyme leads to bleaching and eventual death of susceptible weed tissue, as carotenoids can no longer protect chlorophyll from photo-oxidative damage. Topramezone is classified under HRAC/WSSA Group 27 (HPPD inhibitors) and is applied with a methylated seed oil adjuvant to aid uptake.
Mezonex (Topramezone 33.6% SC) is diluted in the recommended volume of water together with a methylated seed oil (MSO) adjuvant and applied as a post-emergence foliar spray in maize, using standard knapsack or boom sprayers, following the approved product label.
- Use strictly as per the directions on the approved product label
- Wear appropriate personal protective equipment during mixing and spraying
- Avoid spray drift onto sensitive or non-target crops
- Keep out of reach of children and away from food, feed, and water sources
- Store in a cool, dry place in original packaging
