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Warm weather brings threat of BYDV for cereal growers
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<blockquote data-quote="Agriland RSS" data-source="post: 7740814" data-attributes="member: 105608"><p>Written by Richard Halleron from Agriland</p><p></p><p>The current spell of warm weather will be welcomed by almost every farmer throughout Ireland, but if it were to continue for the next few weeks, it would increase the risk of Barley Yellow Dwarf Virus – BYDV – becoming a real problem within newly emerged barley and wheat crops.</p><p></p><p></p><p></p><p>It is not unknown for periods of warm weather to coincide with autumn cereal planting.</p><p></p><p></p><p></p><p>And as College of Agriculture Food and Rural Enterprise (CAFRE) crops development advisor, Leigh McClean, pointed out to <em>Agriland</em>, it is appropriate for cereal growers to be aware of the BYDV threat as they undertake this work.</p><p></p><p></p><p></p><h2>BYDV risk</h2><p></p><p></p><p></p><p>McClean explained: “Whilst not a widespread issue in recent years, cereal growers should not disregard the BYDV risk this season.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>“Infection by migrating winged aphids is the most common route for infection in autumn cereals. To assess this threat, AFBI [Agri-Food and Biosciences Institute] advises using a suction trap to monitor cereal aphid migration.</p><p></p><p></p><p></p><p>“Data is updated weekly along with <a href="http://”https://northernirelandaphids.shinyapps.io/CerealAphid2021" target="_blank">relevant advice</a>.”</p><p></p><p></p><p></p><h2>Autumn reduces BYDV risk</h2><p></p><p></p><p></p><p>Leigh also pointed out that as autumn progresses, aphid migration and consequent BYDV infection pressure diminishes.</p><p></p><p></p><p></p><p>He said: “As early drilled autumn cereals are at greater risk, farmers should balance this against later sowing, slower emergence and potentially poorer establishment.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>A few winter barley varieties show tolerance to BYDV, meaning that if they become infected, they suffer less of a yield penalty in severe outbreaks than non-tolerant varieties.</p><p></p><p></p><p></p><p>Small quantities of tolerant seed are available this autumn, so consider these for early sown high risk situations.</p><p></p><p></p><p></p><h2>Tillage in 2021</h2><p></p><p></p><p></p><p>The CAFRE agronomist confirmed that tillage farmers can look back on 2021 with great deal of satisfaction.</p><p></p><p></p><p></p><p>He said: “Most cereal crops have yielded well and grain quality has been very good. The same can also be said for straw.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>“However, there is still a problem accessing seed varieties that come into Northern Ireland from Great Britain.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>A significant acreage of spring beans was grown in Northern Ireland in 2021. This is a direct consequence of the two-year protein crop pilot programme introduced by Agriculture Minister Edwin Poots. The measure will continue on in 2022.</p><p></p><p></p><p></p><p>“A small acreage of beans has been harvested up to this point,” commented Leigh McClean.</p><p></p><p></p><p></p><p>“But the main harvest is still a week or two away. However, hopes are strong that the vast majority of the crops grown, will be in store before the end of September.”</p><p></p><p></p><p></p><h2>Grass weed control</h2><p></p><p></p><p></p><p>According to the CAFRE agronomist the development of grass weed control measures and slug monitoring programmes, should be a <strong>priority</strong> for cereal growers over the coming weeks.</p><p></p><p></p><p></p><p>He said: “Grass weeds, most commonly <strong>sterile brome</strong>, continue to be a problem in certain places.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>“This encourages a flush of weeds, which can be burnt off before ploughing and drilling.</p><p></p><p></p><p></p><p>The CAFRE representative added that where slugs are concerned, it’s a case of assessing numbers before winter crops are sown.</p><p></p><p></p><p></p><p>“Traps should be set on damp soil using dry bait under a tea tray-sized cover. These should be left overnight and checked for slugs the next day,” he said.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>“If slug numbers exceed four per trap in cereals, or one per trap in oilseed rape, growers should consider applying ferric phosphate slug pellets if emerging crops are still at risk,” he concluded.</p><p></p><p></p><p></p><p>The post <a href="https://www.agriland.co.uk/farming-news/warm-weather-brings-threat-of-bydv-for-cereal-growers/" target="_blank">Warm weather brings threat of BYDV for cereal growers</a> appeared first on <a href="https://www.agriland.co.uk" target="_blank">Agriland.co.uk</a>.</p><p></p><p><a href="https://www.agriland.co.uk/farming-news/warm-weather-brings-threat-of-bydv-for-cereal-growers/" target="_blank">Continue reading on the Agriland Website...</a></p></blockquote><p></p>
[QUOTE="Agriland RSS, post: 7740814, member: 105608"] Written by Richard Halleron from Agriland The current spell of warm weather will be welcomed by almost every farmer throughout Ireland, but if it were to continue for the next few weeks, it would increase the risk of Barley Yellow Dwarf Virus – BYDV – becoming a real problem within newly emerged barley and wheat crops. It is not unknown for periods of warm weather to coincide with autumn cereal planting. And as College of Agriculture Food and Rural Enterprise (CAFRE) crops development advisor, Leigh McClean, pointed out to [I]Agriland[/I], it is appropriate for cereal growers to be aware of the BYDV threat as they undertake this work. [HEADING=1]BYDV risk[/HEADING] McClean explained: “Whilst not a widespread issue in recent years, cereal growers should not disregard the BYDV risk this season. “Infection by migrating winged aphids is the most common route for infection in autumn cereals. To assess this threat, AFBI [Agri-Food and Biosciences Institute] advises using a suction trap to monitor cereal aphid migration. “Data is updated weekly along with [URL='http://”https://northernirelandaphids.shinyapps.io/CerealAphid2021']relevant advice[/URL].” [HEADING=1]Autumn reduces BYDV risk[/HEADING] Leigh also pointed out that as autumn progresses, aphid migration and consequent BYDV infection pressure diminishes. He said: “As early drilled autumn cereals are at greater risk, farmers should balance this against later sowing, slower emergence and potentially poorer establishment. A few winter barley varieties show tolerance to BYDV, meaning that if they become infected, they suffer less of a yield penalty in severe outbreaks than non-tolerant varieties. Small quantities of tolerant seed are available this autumn, so consider these for early sown high risk situations. [HEADING=1]Tillage in 2021[/HEADING] The CAFRE agronomist confirmed that tillage farmers can look back on 2021 with great deal of satisfaction. He said: “Most cereal crops have yielded well and grain quality has been very good. The same can also be said for straw. “However, there is still a problem accessing seed varieties that come into Northern Ireland from Great Britain. A significant acreage of spring beans was grown in Northern Ireland in 2021. This is a direct consequence of the two-year protein crop pilot programme introduced by Agriculture Minister Edwin Poots. The measure will continue on in 2022. “A small acreage of beans has been harvested up to this point,” commented Leigh McClean. “But the main harvest is still a week or two away. However, hopes are strong that the vast majority of the crops grown, will be in store before the end of September.” [HEADING=1]Grass weed control[/HEADING] According to the CAFRE agronomist the development of grass weed control measures and slug monitoring programmes, should be a [B]priority[/B] for cereal growers over the coming weeks. He said: “Grass weeds, most commonly [B]sterile brome[/B], continue to be a problem in certain places. “This encourages a flush of weeds, which can be burnt off before ploughing and drilling. The CAFRE representative added that where slugs are concerned, it’s a case of assessing numbers before winter crops are sown. “Traps should be set on damp soil using dry bait under a tea tray-sized cover. These should be left overnight and checked for slugs the next day,” he said. “If slug numbers exceed four per trap in cereals, or one per trap in oilseed rape, growers should consider applying ferric phosphate slug pellets if emerging crops are still at risk,” he concluded. The post [URL='https://www.agriland.co.uk/farming-news/warm-weather-brings-threat-of-bydv-for-cereal-growers/']Warm weather brings threat of BYDV for cereal growers[/URL] appeared first on [URL='https://www.agriland.co.uk']Agriland.co.uk[/URL]. [url="https://www.agriland.co.uk/farming-news/warm-weather-brings-threat-of-bydv-for-cereal-growers/"]Continue reading on the Agriland Website...[/url] [/QUOTE]
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