Know How / Disease management

Get advice on managing disease in wheat, barley, oilseed rape, potatoes, and sugar beet. Find the best ways to combine cultural and chemical controls and how to deal with fungicide resistance. See tips, insights and farmer case studies focusing on major disease threats such as septoria, yellow rust, ramularia, phoma leaf spot and blight and how to combat them.

Advice and tips


How to prepare for ergot limits in cereals for harvest 2021

Growers need to prepare for new regulations covering maximum limits on ergot in cereals, to avoid loads being rejected by millers and merchants from harvest 2021 onwards.  The current 0.05%…


How to manage take-all in winter wheat after spring cereals

Growers considering planting winter wheat following spring barley next autumn are being warned of the increased risk from the soil-borne fungus take-all, which can cause yield losses of up 2t/ha…


Ramularia risk to barley as key fungicide banned

Spring barley growers need to make sure they have a ramularia-active fungicide in their T2 sprays this season as the best product for this disease is being banned this week.…


Fusarium: How to assess and manage the risk in cereals

Protecting crops against the damaging effects of fusarium ear blight is essential in any year, but it could be even more so this season, given the reduced wheat area and…

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Case studies


Virus-tolerant barleys could offer insecticide-free future

Virus-tolerant winter barley varieties could be the way forward to avoid spraying insecticides in the autumn, but there are some doubts about whether these varieties give good enough yields and…


Wheat variety assessed for ability to cut fungicide costs

One big farming company is hoping that growing the more disease-resistant winter wheat variety Extase will help it fine-tune fungicide spending this spring. Sentry grew 100ha of the variety last…


How two wheat growers cut their fungicide bills below £70/ha

Two Herefordshire wheat growers spent less than £70/ha on fungicides last year and still yielded over 11t/ha even in the disease-prone wetter west of England. Both took part in a…


How Berks wheat grower increased his yields by 20%

Tissue testing has helped Berkshire wheat grower Dan Willis push his yields up to 20% higher while his resulting healthier crops has seen him cut his fungicide costs. Checking his…

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Can wheat blends raise yields and cut disease control costs?

Growing different blends of wheat varieties can increase yields while reducing disease pressure, enabling farmers to cut the number of fungicide applications, suggests new Danish research. The landmark research, carried out by…


What research is being done to tackle virus yellows in beet

High levels of virus yellows are starting to show in sugar beet crops following what one sugar beet expert calls “unprecedented levels of aphids” during spring. Aphids were migrating from…


How wheat growers will benefit from virus-resistant variety

Season-long protection against barley yellow dwarf virus (BYDV) without the use of insecticides is set to become a reality through genetics, as the first winter wheat variety containing the Bdv2…


Analysis: How the loss of chlorothalonil will affect farmers

The multisite fungicide chlorothalonil – the mainstay of many disease control programmes in a range of crops – has finally gone, following an EU ban on sales last year and…

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Cereals 2020: Sprayer app helps keep spray on the right target

Almost 250 sprayer operators are using a new app, only two weeks after its launch, to help them choose the best time to spray with which nozzles and settings to…


Cereals 2020: The winter wheat varieties that can cut costs

Winter wheat growers could save £40/ha on fungicide costs if they pick modern, disease-resistant varieties this autumn over more disease-prone ones. Choosing varieties such as Extase and Saki can save…


Cereals 2020: New fungicide lifts wheat yields by 0.5t/ha

A novel cereal fungicide, which is set to be launched in the UK next spring, is being sprayed on Irish wheat crops for septoria control this season after trials showed…


Potato growers hit with loss of another key seed treatment

Rhizoctonia control is set to become much more difficult for potato growers with news of a second seed treatment being withdrawn, just weeks after the loss of Monceren. EU regulators…

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Video: Phone app is cheaper way to monitor crops with a drone

A new smartphone app offers farmers a cheaper and easier way to monitor their crops, simply with a mobile phone and a cheap drone. Developed by Northumbria-based Drone Ag, the…


Video: Early potato harvest start is worst for 40 years

Brothers Peter and Philip Le Maistre are sixth-generation Jersey farmers and for them this potato season has been the worst since covering spuds with plastic started to be used on…


Video: Jersey early potato yields dip 20% after frosty February

Jersey’s early potato harvest is almost a month late this spring, with yields expected to be down one-fifth after the Beast from the East frosted off young plants barely out…


Video: Crop Doctor sees septoria rising to worrying levels

Disease levels are rising in the nation’s wheat crops with the wet weather likely to encourage septoria to spread and put growers on alert to make sure their fungicide programmes…

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Expert advice on maximising OSR yields in a difficult season

After such a wet autumn and winter, the big question over oilseed rape this spring is: "What can farmers do to maximise yields in a very difficult season for oilseed…

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