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Summer weeds can rob subsequent crops of soil nitrogen and stored soil water. They can also reduce crop emergence by causing physical and/or chemical interfence at seeding time.
Introducing new plants to an area can have positive and negative effects on the environment, economy and community.
Some aquatic plants used in ponds and aquariums are highly invasive and have become serious weeds in natural waterways.
In an integrated weed management program, control of weeds should occur in the fallow, pre-sowing, early post-emergent and in pasture phases.
A list containing links to descriptions and chemical controls for declared plants and a calendar of operation for declared and other trouble plants.
Control methods for common sensitive plant (Mimosa pudica) a declared pest in Western Australia.
Control methods for giant sensitive plant (Mimosa diplotricha) a declared pest in Western Australia.
High priority invasive species are defined in the Invasive Species Plan for Western Australia as high risk species that can establish widely, and if so cause the most undesirable impact.
This page lists species commonly found on or near saline land in southern Western Australia. These species can be used as indicators of the level of salinity and waterlogging on the site.
Oats are more competitive with weeds than most other crops but weed control is still critical, particularly in hay crops as weeds can cause downgrading or rejection of export hay.