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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.
In 2020 the Department is conducting over 300 Grains Research trials across the state from Kununurra in the north to Esperance in the south.
Field research services (FRS) ensures the delivery of timely and efficient technical expertise to implement field research experiments across the Western Australian grainbelt.
One method of weed control is to remove weed seeds in the fallow, stubble and pre-sowing phase.
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.