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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 2021 the Department is conducting over 300 research trials across the state from Kununurra in the north to Esperance in the south.
Testing for herbicide susceptibility allows you to determine what herbicide options are still available to control weeds on your farm.
This management strategy provides an opportunity to control weed seed set in the pasture and during harvest.
The most accurate way to estimate the weed population of a paddock is to count the number of plants in an area of known size at a number of locations.
Doublegee or spiny emex is a significant weed in Western Australia. It is a vigorous annual herb with a strong tap root and a long, fleshy, hairless stem.
One method of weed control is to remove weed seeds in the fallow, stubble and pre-sowing phase.
‘Risk-aware’ growers can implement strategies to reduce and avoid unnecessary introduction and spread of weeds.
Silver grass is an annual grass occurring in both cropping and grazing regions across Australia. There are several species, the most common being Vulpia myuros and V. bromoides.
In-crop weed competition causes losses costing around $1 billion per annum for Western Australia.