Rotam Agrochemical
Registered until
Registration number
Active materials

It is a violation of federal law to use this product in a manner inconsistent with its labeling.
Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area
during application. For any requirements specific to your state or tribe, consult the agency responsible for pesticide regulation. Primero Agricultural Herbicide may be used only in accordance with directions on this label. ROTAM NORTH AMERICA, INC. will not be responsible for losses or damage resulting from use of this product in any manner not specifically recommended by ROTAM NORTH AMERICA, INC.

Primero Agricultural Herbicide is a water dispersible granule used at a rate 1/3 - 1 1/3 ounces per acre for selective postemergence grass weed control in field corn grown for seed or grain, popcorn and sweet corn. Do not make more than two applications of Primero Agricultural Herbicide per cropping season. The combined dosage of sequential applications cannot exceed 1 1/3 ounces per acre of Primero Agricultural Herbicide.

Primero Agricultural Herbicide may be used on field corn, high lysine, waxy, white or other food grade corn hybrids. Primero Agricultural Herbicide may be broadcast to corn up to 20’’ tall (freestanding) or that is exhibiting up to and including 6 leaf collars (V6), whichever is more restrictive.
While Primero Agricultural Herbicide has a wide application window, research has shown best results are obtained when applications are made early postemergence when corn and weeds are small. Target applications to corn that is less than 12’’ tall for best overall performance.

Application Timing
Apply Primero Agricultural Herbicide when grasses are young and actively growing, but before they exceed the sizes indicated in Table 1. Treat heavy infestations of weeds before they become too competitive with the crop, especially where soil moisture and/or fertility are limited. Primero Agricultural Herbicide provides weed control via foliar absorption. Primero Agricultural Herbicide only controls those weeds that have emerged. For later-emerging weeds, a second application or a timely cultivation is required.
Applications made to weeds larger than the size indicated on this label or to weeds under stress may result in unsatisfactory control. (See LATE OR RESCUE APPLICATIONS.)

Registered for cultures
Sweet corn