29 January 2015 | Online since 2003



27 February 2013|Arable,Crops,News

Follow first nitrogen with Galera for weed control in rape


The challenging autumn that offered little opportunity for pre-em herbicide applications and subsequent difficult establishment has led to many backward winter oilseed rape crops that are struggling to compete with the extra burden of broad-leaved weeds such as cleavers and crane’s bill.

But with the healthy price of oilseed rape, the majority of growers will be making sure that they manage their rape crops as carefully as possible this spring as this is the only way to better yields and profitability.

Several species of difficult and competitive broad-leaved weeds in winter oilseed rape such as sow-thistle, cleavers, mayweeds and crane’s-bill are already present in crops and, as soon as the weather warms up, they will be ready and waiting to romp away and cause yield and harvesting problems.

David Roberts of Dow AgroSciences points out that these weeds will need checking before they become too big a problem and growers should make sure that they have sufficient herbicide in the store now to tackle the problem as soon as conditions allow.

"Every year some fields on some farms have problem weeds such as cleavers, sow-thistle, mayweeds and creeping thistle that need tacking in the spring."

"Most advisors know from experience and farm history which fields are likely to warrant treatment. But where a metazachlor based product was not applied this autumn, I would think that more advisors may want to try to recover their position on weed control this spring and consider whole farm applications."

"As well as being very visible at flowering, problem weeds including cleavers, sow-thistle, mayweeds and creeping thistle compete directly and smother the crop, making harvesting much more difficult and more costly. Effective weed control is needed as soon as conditions allow."

David points out that there are few spring-applied herbicides for winter oilseed rape.

"Galera, based on clopyralid and picloram, is the main spring applied herbicide for winter oilseed rape due to its level of performance and its weed spectrum."

"It works best when weeds start to grow and when temperatures are starting to rise. For sow-thistles you need much less active growth than you do for cleavers. Applied at 0.35 l/ha, it will give excellent control of mayweeds, creeping thistles, sow-thistle and very good suppression of cleavers. Groundsel is also well controlled up to the 6 leaf stage and good effects on crane’s-bill have been reported.”

"But its spray window is quite narrow, so farmers need to get sufficient herbicide onto the farm ahead of the game, so that they are in a position to spray when they can."

"Galera can be applied from the 4 leaf stage of the crop up to the point just before flower buds are visible above the crop canopy – this cut off is usually at the end of March or beginning of April. Most rape crops are less developed than normal this year, but once the first nitrogen is applied and the weather warms up a bit, both weeds and crop will start to grow away."

"Farmers plagued with these difficult weeds need to make sure that they have Galera in the store in readiness for application applied around one week after the first nitrogen is applied. Then both crop and weeds will be starting to grow and there is a good compromise between weed shading and crop competition," said David.

David Roberts reminds growers of their responsibility of keeping pesticides well away from water courses.

“Extra care needs to be taken at time of spraying to avoid any contamination of water courses.”

Galera (267 g/L of clopyralid and 67 g/L of picloram formulated as a suspension concentrate) is recommended post-emergence in all varieties of winter oilseed rape for the control of broad-leaved weeds including cleavers, mayweed, sow-thistles and thistles.

It can be applied from the 4 leaf stage of the crop up until before flower buds are visible above the crop canopy. It is recommended at a dose rate of 0.35 l/ha and is compatible with a wide range of graminicides, insecticides and fungicides. It is packed in a 1 litre container.

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


23 January 2015
DCS Systems Specialist
2 synthetic ethanol units (300 ktpa) and a petrochemical tank farm; To maintain, design, implement and control the System Har...

6 January 2015
Project Engineer
Significant experience of managing projects within the food, drink, dairy and related sectors. Sycamore Process Engineering L...

13 January 2015
trainee Workshop Engineer (PDI)
Fitter, mechanical, nvq, hnc, hnd, onc, workshop technician, plant fitter, vehicle, automotive, maintenance, pdi, engineer, s...

17 January 2015
Site Engineer (Windfarm)
Due to company growth within this construction company they now seek a Site Engineer with Wind farm experience....

9 January 2015
Procurement Manager
HND/Degree in Agriculture and Business Administration. A leading food manufacturing business with numerous production facilit...




Top stories you may have missed
12 November 2014 | Arable
GM crops 'good for farmers and the envir...

GM crops 'good for farmers and the envir...

GM crops are good for the economy and can reduce the amount of pesticides u...


6 November 2014 | Cattle
Smaller European markets drive beef expo...

Smaller European markets drive beef expo...

Demand from smaller European markets has helped drive strong growth for UK ...


6 November 2014 | Agri Safety
Lack of engineers a 'ticking time bomb' ...

Lack of engineers a 'ticking time bomb' ...

A lack of engineers, not enough people promoting the land-based industries ...


4 November 2014 | Bees and Beekeeping
Bee action plan due: Last chance for bee...

Bee action plan due: Last chance for bee...

Environment Secretary Elizabeth Truss is launching the National Pollinator ...


4 November 2014 | Arable
Experts welcome financial boost for youn...

Experts welcome financial boost for youn...

Agricultural specialists have welcomed a potential financial boost for youn...


3 November 2014 | News
Supermarket competition on prices 'risks...

Supermarket competition on prices 'risks...

As retailers continue to participate in a highly competitive race to the bo...


31 October 2014 | Arable
New Defra farm figures 'underline volati...

New Defra farm figures 'underline volati...

New farm business income data from Defra, which focus on income from March ...


30 October 2014 | Agri Safety
Agriculture remains one of UK's most dan...

Agriculture remains one of UK's most dan...

Agriculture has remained one of the industries in which workers are most li...


29 October 2014 | Finance
UK farmland prices see 'substantial grow...

UK farmland prices see 'substantial grow...

Prime arable land in the UK has seen a substantial year-on-year growth in p...


27 October 2014 | Arable
Satellites to help farmers pinpoint dise...

Satellites to help farmers pinpoint dise...

A new mobile app for farmers able to pinpoint and identify disease, pests a...