30 June 2015 | Online since 2003

Protect maize before it gets too tall



21 July 2014 11:52:49|Arable,Cereal,Crops,Market Reports,News

Protect maize before it gets too tall


Heavy rain and thunderstorms across southern and eastern England could trigger the onset of foliar diseases in maize crops. Cool wet or humid conditions typically result in more serious loss of green leaf area caused by Eyespot and Leaf Blight, at a time when crops should be growing at their fastest, warns Syngenta Field Technical Manager, Simon Roberts.

“After a slow start, most maize crops have been growing incredibly well,” he reported. “For many, the height of plants is such that now is the last opportunity to spray a preventative fungicide using conventional farm sprayers without causing damage.”

Leaf diseases that result in early die-back of plants can severely affect yields of forage maize and feedstock for biogas production. This season is the first time UK growers have a fully approved fungicide for use in maize, with Quilt Xcel.

Simon Roberts

Mr Roberts advocates that enhancing maize plant health and protection of the green leaf area with Quilt Xcel ensures the crop can make more effective use of sunlight to boost cob yield. Yield improvements of over 15% have been seen in trials from the control of Leaf Blight alone.

The label recommendation for Quilt Xcel is for one application of 1.0 l/ha, at any time from stem elongation (GS 30) through to the end of flowering (GS 69). “Quilt Xcel is a preventative fungicide, targeted to protect the leaf from infection ahead of high risk conditions - typically at an earlier timing,” he added.

Application advice

Later application, in taller crops, is likely to require specialist high clearance spray equipment. That may require a contractor, although Mr Roberts highlighted many arable farms growing biogas maize will currently have sprayers kitted out for oilseed rape desiccation that would give greater crop clearance.

He pointed out that operators should aim for 50cm boom height clearance above the crop, with the use of angled nozzles potentially giving better coverage into the canopy. He reported new Syngenta nozzle technology and application trials could give growers further options to extend spraying opportunities in the future.

“Although most spraying operations are now geared to speed, where sprayers are going through taller crops much of the damage can be alleviated by slowing down; allowing the crop to bend over and then spring back, rather than snapping off,” he advised.

However, any sprayer damage is likely to be minimal, compared to the losses from an outbreak of disease stripping leaves and decimating yield.

Northern Blight
Northern Leaf Blight (Helminthosporium turcicum) has only been identified in the UK relatively recently, however climatic conditions and the increase in industrial maize cropping is expected to see the incidence worsening over coming years, said Mr Roberts. “Humid conditions appear most conducive to rapid infection; initial spots can spread by over 1cm in just 24 hours, leading to rapid leaf loss.”

Early infection at or before flowering can result in up to 50% yield loss, but if leaves can be kept clean for several weeks post flowering from a Quilt Xcel treatment, any late infection will have little or no effect on final yield.

Download




Comments


No comments posted yet. Be the first to post a comment

To post comment without approval login or register

Display name

Please enter your name

Email (optional)
Comment

Please enter your comment

Post Comment

Your comment submitted successfully.Please wait for admin approval.

Some error on your process.Please try one more time.



Jobs


Start Date: 18 June 2015
Experienced Telehandler Operator Jobs x 2 required by busy Suffolk contractor 

Two positions available for harvest work loading lime/fertiliser spreaders & moving straw. Telehandler ticket a big ...


Start Date: 26 June 2015
Job for Arable worker >>> Kent

Experienced, enthusiastic, self-motivated person required for 1,500 acre mixed arable/livestock farm in North West Kent with ...


Start Date: 20 June 2015
Demonstration combine driver, SAME Deutz-Fahr. Harvest job travelling round the UK

SAME Deutz-Fahr has an exciting opportunity for an experienced combine driver to join its UK team to demonstrate one of its c...


Start Date: 26 June 2015
Harvest Work Job for 3 people >>>Oxford<<<

3 people required for harvest on 2000 acre farm with red deer herd. One to run grain store (training will be given) and ...


Start Date: 25 June 2015
Job for Soil Sampling Technician    >>> Based in Kent<<< South East coverage

ACS Farm Image, part of the ACS Group, provides specialist services in soil analysis and mapping for the purpose of determini...





Top stories you may have missed
5 June 2015 | Cattle

A strong pound and increased red meat imports coupled with a plentiful dome...


5 June 2015 | Arable

Depression is affecting Wales' farming industry and there is a need to use ...


5 June 2015 | Arable

With just one week to go before the final judging and announcement of the w...


5 June 2015 | Finance

A rural law expert has highlighted the importance of good succession planni...


5 June 2015 | Farmshops

A south Yorkshire dairy farming family is pulling out all the stops to prom...


4 June 2015 | Finance

Predicting what is going to happen to wheat prices is a challenge, but in s...


4 June 2015 | Agri Safety

A Lancashire based livestock theft prevention scheme is aiming to go nation...


4 June 2015 | News

A female farmer has been recognised by the farming and conservation industr...


4 June 2015 | Finance

The new Conservative government appears to be preparing to implement cuts f...


4 June 2015 | Arable

The Rural Payments Agency (RPA) will have mobile support units at the follo...