Know How / Blackgrass

Blackgrass is a major problem facing cereal growers in the UK. Herbicide resistance and glyphosate regulation means that farmers need to use a combination of chemical and cultural controls. See the latest advice on stopping the spread and how to use an integrated approach to tackle this prolific grassweed.

Advice and tips


How to keep on top of spring-germinating blackgrass

Farmers with a significant blackgrass problem should stick with spring barley this season, as the crop – when managed correctly – offers the best way to keep on top of…


5 tips to get the most from residual blackgrass herbicides

Residual soil-acting herbicides can account for up to half of the annual crop protection spend for winter wheat in bad blackgrass situations, so getting the best out of them is…


How to get the most from Avadex this autumn

Residual herbicide Avadex (tri-allate) has seen a bit of a renaissance in recent years, with many growers using the granules to get on top of blackgrass immediately after drilling, as…


The best way to manage stubbles after harvest

Unless you are one of a growing number of no-tillers or you plough every year, it is difficult to be prescriptive when it comes to post-harvest cultivation strategy. There is…

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Case studies


Cereal grower to ditch herbicides for inter-row hoe

Oxfordshire growers Alan and Richard Smith plan to cut their use of herbicides in winter wheat and spring barley after achieving great blackgrass control with a mechanical hoe. Post-emergence sprays…


Why one grower went organic to tackle blackgrass problem

Faced with a bad blackgrass problem, Worcestershire grower Adrian Steele made the bold move of going organic to successfully reduce his weed problem and improve soil health. Chapel Farm, near…


How Cambs grower has halved glyphosate use

A Cambridgeshire farmer has dramatically halved the amount of glyphosate used, and this year he successfully grew some of his oilseed rape without using the herbicide. Glyphosate is the most…


Why data is proving useful in one grower's blackgrass battle

Precision agronomy is helping a Cambridgeshire grower and his agronomist fine-tune blackgrass control and improve farm performance. Having taken the plunge and linked his precision farming data with agronomic practices…

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Why a major blackgrass project is looking at soil health

Improving soil health has now been included in Agrovista’s long-term blackgrass trial, as the company continues to refine its blackgrass management advice for growers on heavy land.  The project’s tried-and-tested…

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Crop Watch: Rain puts pressure on delayed wheat drilling

The wet spell continues and there are fears that growers could lose their nerve on delayed drilling of wheat. Persistent wet weather is also affecting weed strategies, with many of…


Blackgrass battle hampered by wet and seed dormancy

The fight to control blackgrass could be tougher this autumn as wet weather is tempting winter wheat growers to drill early while seed of the grassweed shows high dormancy levels.…


Bayer working on new chemistry to tackle blackgrass

Agrochemical giant Bayer is working on a herbicide with a new mode of action to tackle blackgrass in winter wheat. Arnd Nenstiel, the company’s weed control specialist, says researchers in…


First signs of resistance found to key herbicide flufenacet

The first signs of ryegrass and blackgrass resistance to the widely used used herbicide flufenacet are being detected, with growers being urged to use other methods of control as well…

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Test and reviews

New Defy 3D nozzle: Sprayer operators give their verdict

Agrochemical giant Syngenta has launched its new Defy 3D spray nozzle, which will provide growers with improved grassweed control and reduced spray drift. The new nozzle is an evolution of…

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Video: The plan that battered blackgrass in 12 months

Three Cambridgeshire growers are fighting back against a heavy yield penalty imposed by blackgrass with a new establishment system and have seen a dramatic turnaround in just 12 months. Declining…


Video: Advice on autumn establishment and weed control

There are four core factors that determine the success of an autumn established wheat crop – soil and seed-bed quality, weed control, timing and herbicide application. Laying the foundations of…


Video: Grower cuts fuel costs as new drill hits blackgrass

The need to slash soaring fuel costs while tackling blackgrass at the same time has led to a wholesale change in establishment system on one Leicestershire estate. Farming 1,130ha of…


Video: Spring crops and no-till vital in blackgrass fight

Heavy land growers wanting to put a serious dent in their blackgrass burden must turn to spring cropping and consider direct drilling – that’s the top message from Project Lamport this year.…

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