Sunday 27 May 2012
Headlines
Did you find this story interesting? (0) (0)
16/02/2004
New Fungicide choice for spring barley growers
Picture: Bravo 500 - now approved against spotting in barley Bravo for barley growers as fungicide gets official approval against spotting 16 February 2004
WINTER and spring barley growers have a new fungicide choice to help tackle the serious, twin problems of Rhynchosporium and 'barley spotting'.
Bravo 500, from Syngenta, already has approval in a range of crops - including winter wheat, peas, beans and vegetables.
But a new approval for barley provides a breakthrough for growers, says Syngenta fungicide technical manager Rod Burke, since it is the only product to carry label approval for control of 'barley spotting'.
"The further north you go the more of a problem barley spotting becomes," says Mr Burke. "It is now one of the major diseases in Scotland and is probably equivalent to Rhynchosporium in importance. Basically, it just defoliates the plant.
"Yield loss can typically be 0.25 t/ha. But more important is the loss in grain size it can cause which can lose growers their malting premiums," he adds.
Caused by a variety of factors, 'barley spotting' has become more prevalent over recent seasons - though it is unclear why. It falls into two categories. Biotic spotting is believed to be caused by diseases including Ramularia, Alternaria and Botrytis, while abiotic spotting is caused by factors such as oxidative and nutrient stress and hypersensitive reactions within the plant.
"Fortunately, use of Bravo 500 in late season fungicide programmes has been shown to alleviate both types of spotting," adds Mr Burke.
"Adding Bravo 500 to a triazole in winter barley trial plots in North Yorkshire last year reduced abiotic spotting from 20% to just 3%. Effective reductions have also been seen in spring barley by adding Bravo 500 to strobilurin + triazole programmes," he adds.
"Also, Bravo 500 is a multi-site fungicide, which makes it harder for resistance to develop. So, as well as controlling barley spotting, addition of Bravo 500 to other fungicides makes it a useful anti-resistance partner too.
"It is also formulated with an advanced WeatherStik formulation designed to improve rainfastness. This is important since Rhynchosporium is a wet weather disease."
Maximum use rate of Bravo 500 in barley is 2.0 litres of product per hectare, with a maximum number of treatments of two per crop. Latest time of application is before growth stage 51 (first spikelet just visible) in barley.
"Bravo 500 must always be used with a tank mix partner as part of an integrated fungicide programme," Mr Burke stresses. Amistar (azoxystrobin) and Acanto (picoxystrobin) can be tank mixed with Bravo 500 at recommended rates.
 |
WINTER and spring barley growers have a new fungicide choice to help tackle the serious, twin problems of Rhynchosporium and 'barley spotting'.
Bravo 500, from Syngenta, already has approval in a range of crops - including winter wheat, peas, beans and vegetables.
But a new approval for barley provides a breakthrough for growers, says Syngenta fungicide technical manager Rod Burke, since it is the only product to carry label approval for control of 'barley spotting'.
"The further north you go the more of a problem barley spotting becomes," says Mr Burke. "It is now one of the major diseases in Scotland and is probably equivalent to Rhynchosporium in importance. Basically, it just defoliates the plant.
"Yield loss can typically be 0.25 t/ha. But more important is the loss in grain size it can cause which can lose growers their malting premiums," he adds.
Caused by a variety of factors, 'barley spotting' has become more prevalent over recent seasons - though it is unclear why. It falls into two categories. Biotic spotting is believed to be caused by diseases including Ramularia, Alternaria and Botrytis, while abiotic spotting is caused by factors such as oxidative and nutrient stress and hypersensitive reactions within the plant.
"Fortunately, use of Bravo 500 in late season fungicide programmes has been shown to alleviate both types of spotting," adds Mr Burke.
"Adding Bravo 500 to a triazole in winter barley trial plots in North Yorkshire last year reduced abiotic spotting from 20% to just 3%. Effective reductions have also been seen in spring barley by adding Bravo 500 to strobilurin + triazole programmes," he adds.
"Also, Bravo 500 is a multi-site fungicide, which makes it harder for resistance to develop. So, as well as controlling barley spotting, addition of Bravo 500 to other fungicides makes it a useful anti-resistance partner too.
"It is also formulated with an advanced WeatherStik formulation designed to improve rainfastness. This is important since Rhynchosporium is a wet weather disease."
Maximum use rate of Bravo 500 in barley is 2.0 litres of product per hectare, with a maximum number of treatments of two per crop. Latest time of application is before growth stage 51 (first spikelet just visible) in barley.
"Bravo 500 must always be used with a tank mix partner as part of an integrated fungicide programme," Mr Burke stresses. Amistar (azoxystrobin) and Acanto (picoxystrobin) can be tank mixed with Bravo 500 at recommended rates.
No Comments
Nobody has posted any comments on this story.
|
Farming items for Sale
|
McCormick XTX165 - Spalding(GBP 46000)
John Deere 6220 SE - Lancaster
(Price on Application)
(Price on Application)
John Deere - 7720 TRACTOR - Norwich(GBP 42500)
Fiat 8294 1993 - Shepton Mallet(GBP 10500)
Case IH 268 - Chippenham(GBP 3436)
Related News
New fungicide to help growers make more out of barley - 06 Feb 2007Barley – a valuable crop in rotations, but effective control of Rhynchosporium must be sustained. UK barley growers will have an advanced way to ma...
New spring barley gives leading grower great yield and saving on inputs - 22 Jan 2006NEW SPRING BARLEY GIVES LEADING GROWER GREAT YIELD AND SAVING ON INPUTS Variety decisions have been made a little easier this year on one Bedfordsh...
Spring barley success gives growers increased variety - 24 Feb 2012As the popularity of Null-Lox malting barley grows, there is an increasing choice of varieties as established varieties are available for drilling thi...
Spring barley success gives growers variety - 24 Feb 2012As the popularity of Null-Lox malting barley grows, there is an increasing choice of varieties as established varieties are available for drilling thi...
New Year cheer for spring barley and beer - 19 Dec 2007MUCH-IMPROVED grain prices; a leaner and fitter growing and malting industry; and newer high-yielding varieties should all give added cheer to spring ...
New Garner feed spring barley gathers together disease resistance with high grain and straw yields - 04 Feb 2010A new top-yielding feed spring barley described as a solid, no nonsense option for growers looking for a variety with high output yet which is straigh...
New fungicide being developed to meet the needs of UK cereal growers - 04 Jan 2006A new cereal fungicide designed to help UK farmers fight back against growing disease resistance problems – by meeting the demand for higher doses of ...
New ‘all-in-one’ fungicide could save growers time and cost - 22 Jan 2007A BRAND new, all-in-one fungicide formulation which should help growers cut down on the time required for mixing during sprayer fill-ups and reduce th...
New barley varieties for UK growers - 02 Aug 2010Null-Lox spring malting barley is a new development from the Carlsberg Research Centre, moving malt and beer quality onto the next level. Null-Lox...
Fungicide choice and fluctuating temperatures point towards Starane XL - 08 Apr 2004Warm days and cold nights combined with rapid cleavers growth in cereal crops means growers should be careful about product choice for reliable contro...
