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In 2021 the Department is conducting over 300 research trials across the state from Kununurra in the north to Esperance in the south.
This project aims to determine the spread of emerging summer weeds and deliver new knowledge on the biology and management of these emerging summer and winter weeds, with an overall aim of increasi
The viability of annual ryegrass seed can be reduced substantially by desiccation, pre-harvest spraying or swathing of canola depending on the product and timing.
An 11 year study showed that narrow row spacing and harvest weed seed destruction (that is, residue burning each autumn) reduced annual ryegrass seed production.
Wild radish (Raphanus raphanistrum) is highly competitive in crops and can cause a yield loss of 10-90%.
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.
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.