Sunday 27 May 2012
Headlines
Did you find this story interesting? (0) (0)
28/06/2010 10:38:37
New off-label for Valbon against downy mildew
Potato blight fungicide Valbon (containing benthiavalicarb and mancozeb) has been granted an extension to its specific off-label approval (SOLA) by the Chemicals Regulation Directorate (CRD) for use on outdoor crops of bulb onions, shallots and garlic.
The off-label comes in time to help tackle the disease in this year’s downy mildew fungicide programmes which kick off this month, explains Certis’ technical officer Alan Horgan. "It is particularly advantageous given the increasing disease pressures following this recent warm showery weather that is ideal for spreading of infection," he says.
The SOLA has been granted following Valbon’s re-registration, as part of the ongoing EU pesticide review process, continuing growers’ access to an effective fungicide against downy mildew.
Alan notes that Valbon has been successfully used in potato crops for the control of late blight as well as having an extension for use in ornamental and amenity vegetation against downy mildew.
"The changes to the off-label for Valbon means growers have to focus their minds and consider carefully its use within a programme.
"In onion crops in particular – programmes run from June onwards every week – with anything from six to nine sprays being applied depending on the season as it develops.
With growers able to apply three sprays of Valbon, they should be spaced out over, for example, every fortnight. Alternate with other chemistry groups for effective control against downy mildew.
"Containing two active ingredients – benthiavalicarb and mancozeb – Valbon offers translaminar and local systemic activity with both preventative and curative activity within a robust, rainfast treatment," he says.
The benthiavalicarb component of Valbon belongs to the carboxylic acid amide (CAA) group of fungicides. "No more than half of the total number of sprays applied to the crop should consist of CAA fungicides," he advises, urging that it is imperative to avoid using any other CAA group actives wherever possible.
"For outdoor bulb onion, shallot and garlic crops the maximum individual dose is 1.6kg/ ha. Growers can make three applications per crop providing the maximum total dose of 4.8kg/ha/crop isn’t exceeded and providing a 28 day harvest interval is observed," he recommends.
Application can be made in a minimum of 200 litres water per hectare by conventional hydraulic sprayers including air assisted hydraulic sprayers and hand held sprayers.
Growers are reminded that as with any off-label approvals, use is entirely at growers’ own risk.
 |
 |
 |
The off-label comes in time to help tackle the disease in this year’s downy mildew fungicide programmes which kick off this month, explains Certis’ technical officer Alan Horgan. "It is particularly advantageous given the increasing disease pressures following this recent warm showery weather that is ideal for spreading of infection," he says.
The SOLA has been granted following Valbon’s re-registration, as part of the ongoing EU pesticide review process, continuing growers’ access to an effective fungicide against downy mildew.
Alan notes that Valbon has been successfully used in potato crops for the control of late blight as well as having an extension for use in ornamental and amenity vegetation against downy mildew.
"The changes to the off-label for Valbon means growers have to focus their minds and consider carefully its use within a programme.
"In onion crops in particular – programmes run from June onwards every week – with anything from six to nine sprays being applied depending on the season as it develops.
With growers able to apply three sprays of Valbon, they should be spaced out over, for example, every fortnight. Alternate with other chemistry groups for effective control against downy mildew.
"Containing two active ingredients – benthiavalicarb and mancozeb – Valbon offers translaminar and local systemic activity with both preventative and curative activity within a robust, rainfast treatment," he says.
The benthiavalicarb component of Valbon belongs to the carboxylic acid amide (CAA) group of fungicides. "No more than half of the total number of sprays applied to the crop should consist of CAA fungicides," he advises, urging that it is imperative to avoid using any other CAA group actives wherever possible.
"For outdoor bulb onion, shallot and garlic crops the maximum individual dose is 1.6kg/ ha. Growers can make three applications per crop providing the maximum total dose of 4.8kg/ha/crop isn’t exceeded and providing a 28 day harvest interval is observed," he recommends.
Application can be made in a minimum of 200 litres water per hectare by conventional hydraulic sprayers including air assisted hydraulic sprayers and hand held sprayers.
Growers are reminded that as with any off-label approvals, use is entirely at growers’ own risk.
No Comments
Nobody has posted any comments on this story.
|
Farming items for Sale
|
JCB 8250 - Chippenham(GBP 96938)
John Deere - 7830 - Thame
(Price on Application)
(Price on Application)
John Deere 6910 - York(GBP 16800)
Used Claas Ares 816 RZ - YORK(GBP 31000)
Claas Ares 657 ATZ - Ballyclare(GBP 29640)
Related News
Downy Mildew hits true leaves in oilseed rape - 27 Oct 2006Downy Mildew is running rife in oilseed rape crops with the unseasonably warm and continued wet weather. Although cotyledons are frequently attacked w...
Watch out for early threat from downy mildew - 29 Jul 2008Growers are being advised to think ahead and plan their fungicide campaigns now, if they want to reduce the threat of downy mildew in their vegetable ...
Quell the threat of downy mildew in oilseed rape - 22 Sep 2008Downy mildew is surprisingly one of the most common diseases of oilseed rape, appearing in the autumn and then building up on lower leaves in the spri...
Early downy mildew threat in oilseed rape - 19 Sep 2009Unsettled weather has resulted in downy mildew being found in early-drilled winter oilseed rape and an early treatment of Quell Flo (mancozeb) will no...
Downy mildew option for grapes - 01 Sep 2010Fungicide Valbon (benthiavalicarb and mancozeb) has been granted a specific off-label approval (SOLA) by the Chemicals Regulation Directorate for use ...
New Off-label Approvals for Flumioxazin - 22 Jan 2009The residual and contact herbicide, flumioxazin has new off label approvals for use on several horticultural crops, including outdoor top fruit, outdo...
Important New Off-label Approvals for Flumioxazin in vining peas - 05 May 2009The residual and contact-acting herbicide, flumioxazin, available as SumiMax, Digital and Guillotine, has a new and significant off label approval for...
New Off-label Approvals for Flumioxazin in carrots, parsnips and bulb onions - 05 May 2009The residual and contact-acting herbicide, flumioxazin, available as SumiMax, Digital and Guillotine, has several new and significant off label approv...
New Off-label Approvals for Flumioxazin now permits multiple low doses - 23 May 2009The new SOLAs for the residual and contact-acting herbicide, flumioxazin, available as SumiMax, Digital and Guillotine, in vining peas, carrots, parsn...
New Off-label Approval for Borneo in strawberries - 19 Sep 2009The contact-acting acaricide Borneo has a new off label approval for use in strawberries for the control of the two-spotted spider mite to add to its ...
