Blackgrass in wheat crop

Black-grass (Alopecurus myosuroides) is a major weed in winter sown cereals.

Black-grass is an annual grass-weed propagated by seeds, predominately (80%) germinating in the autumn. It is a competitive weed 12 plants/m2 resulting in a 5% yield loss in a wheat crop. Crop profit can be severely impacted by yield loss, herbicide spend and cultural control measures e.g. delayed sowing.

Black-grass has an increasing distribution throughout the UK, Europe, Asia and North America. Herbicide resistant populations are now found widespread across the UK.

Share here projects, experience, resources and best practice for dealing with black-grass.

 

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Integrated Pest Management highlights the growth of a healthy crop with the least possible disruption to agro-ecosystems and encourages natural pest control mechanisms. IPM is one of the tools for low-pesticide-input pest management, and IPM must now be implemented by all professional agchem users.

A weed can have many definitions, one being, any plant growing in a place it is not wanted.

Herbicide resistance is the inherited ability of a weed to survive a rate of herbicide which would be lethal to a member of the normal population. It can develop over time based on repeated selection pressure imposed on the weed, this selection pressure changes the population from susceptible to resistant.  

A trial site in Suffolk investigated a range of management techniques, including time of sowing f

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