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In 2022, the department is conducting more than 300 research trials across the state from Kununurra in the north to Esperance in the south.
The term 'residual' applies to a number of herbicides that have a long lasting activity in the soil. These herbicides are often applied directly to the soil prior to planting crops, pre-emergent.
The department is a key partner in the Grains Research and Development Corporations' (GRDC) National Frost Initiative (NFI) which aims to provide the Australian grains industry with targeted resear
Frost occurs on clear nights in early spring when the air temperature drops to 2°C or less.
One method of weed control is to remove weed seeds in the fallow, stubble and pre-sowing phase.