Weed management
Weeds compete for nutrients and water, which can contribute to crop stress if not properly managed. Weeds may also create harvest problems and increase the marketing costs. Crop rotations, planting into weed-free seedbeds, inter-row cultivations and herbicides are all techniques for controlling weeds. To prevent significant yield loss, weeds must be controlled within four to five weeks of planting.
Herbicides may be applied at pre-plant, pre-emergence, post-plant or post-emergence. Before using herbicides, always read the label. Do not use the herbicides Dual or Primextra (Dual + Atrazine) with waxy maize varieties.
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Herbicides in maize
The tables below include examples of commonly used herbicides in Queensland maize crops. These tables are a guide only. Registrations may differ between individual products and change over time. Always refer to the container label for current registrations and safety information. Check rates, weeds controlled, and application and safety guidelines on the label.
Comprehensive information on registered agricultural chemicals is available on our Infopest CD-ROM, which can be purchased singly or as an annual subscription from our department, or from the Australian Pesticides and Veterinary Medicines Authority website.
