Spring cereal weed control - Time for a change?

Broad-leaved weed herbicide choice for winter barley, wheat and oats

Best use advice for controlling oats with Broadway Star

Packaging benefits of new Dow Shield 400

Regulatory Updates

This edition's FAQs:
- When will treating docks in grassland start?
- How do I control dandelions in grassland? 

Spring cereal drilling is well underway all over the UK. With good growing conditions, crops and weeds will grow rapidly. Important weeds in spring cereals include polygonums, fat hen, fumitory, hemp nettle, mayweeds, brassicas and chickweed, but there may be other locally common weeds dependent on rotation and soil type. Incidences of resistant broad-leaved weeds are increasing, especially for chickweed, mayweed and poppy.

Many fields receive a tank mix of chemistry for broad-leaved weeds. Until now the main herbicidal approach has been a broad-leaved weed SU + / - CMPP or HBN or Starane* 2, but Spitfire* will give a fresh approach to weed control in spring cereals.

Spitfire offers:

• Excellent crop selectivity in spring barley, spring wheat and spring oats
• Wide spectrum of control with added robustness on key weeds that damage yield and quality
• Cost effective options to broaden spectrum
  • Spitfire 0.75 L/ha + CMPP 1.0-1.25 L/ha
    • Polygonums, hemp nettle, mayweeds, chickweed, cleavers, orache, black-bindweed
  • Spitfire 0.75 L/ha + HBN 0.75-1.0 L/ha
    • Polygonums, brassicas, hemp nettle, mayweeds, chickweed, cleavers, black- bindweed, pansy, speedwells, fumitory
  • Adjust ratios to suit weed spectrum / budget
• Help combat the development of resistance with multiple actives
  • Adds in a non-ALS active for resistance management (e.g. chickweed)
  • Adds in non-SU active with “triazolopyrimidine” florasulam
• Excellent compatibility including fungicides and PGRs
• No added following crop or cultivation restrictions

Learn more about using Spitfire 
Learn more about Spitfire tank-mixes 

Under conditions of warm days and cold / frosty nights, Starane* XL is an excellent product choice for cleavers at:

• 1.5l/ha - during a period of frosty nights OR
• 1.25l/ha - during a period when the nights are cold but remain above freezing

In addition to cleaver control Starane XL also delivers robust control of a wide range of broad-leaved weeds including:

* Needs adjuvant MSO or Bio-syl, Cogent, Kantor, Kinetic, Tonto

Starane XL:

• Can be applied as a joint application with a very wide range of other ALS graminicides and broad-leaved weed products
• Has no need for any cultivations prior to sowing the next crop
• Offers a very wide range of rotational cropping options

Learn more about Starane XL

 

Broadway* Star offers excellent control of wild and tame oats including ‘fop/dim/den’ graminicide resistant populations.

The additional control of a range of broad-leaved weeds offers farmers excellent value for money and will negate the need for more complicated tank mixes with wild oat specific products and those for broad-leaved weed control. It will also help avoid the need for minimum sequencing intervals between certain wild oat and broad-leaved weed herbicides - taking away another headache.

Optimising the Wild & Tame Oat control with Broadway Star:

• Use on all varieties of winter wheat, winter rye and triticale
• Apply at 265g/ha in 130-150 litres of water
• Needs to be applied with an adjuvant – range supported
• FINE – MEDIUM spray quality
• Supported through a range of nozzles including Flat Fan Nozzles, Billericay Bubble Jets, Hawk Nozzles, VP Jets and Airtec Nozzles
• Apply when target weeds actively growing
• Rainfast 1 hour
• Crop at GS 11-32 inclusive
• Weeds within correct growth stage
  • Wild Oats    GS 12-30
  • Tame Oats  GS 12-24

Tank Mixes on Winter Wheat (always use Broadway Star + adjuvant)

• Can be tank mixed with a wide range of fungicides including chlorothalonil
• Can be tank mixed a ½ dose of straight Chlormequat (two way tank mix only)
  • Any other growth regulators allow a 7 day interval
• Can be tank mixed with trace elements
• Can be tank mixed with herbicides
• Tank-mixing Broadway Star 265g/ha + 0.5lt/ha Spitfire
  • Offers a clean-sweep of many broad-leaved weeds-many at larger sizes and an even wider spectrum of broad-leaved weeds including Black Nightshade, Docks (from seed), Fumitory and Parsley-piert.
• Wide range of permitted ALS joint applications

Learn more about Broadway Star 

Dow AgroSciences has launched a new double strength formulation of its clopyralid-based herbicide in new packaging to reduce sprayer downtime. The new Dow Shield^# 400 pack will also have self seal technology and no induction seal, so there are no induction foils to get rid of, making the spraying process more streamlined and pack disposal much easier and quicker.

Learn more about use on sugar beet

Spitfire (MAPP No:15101)

Spitfire has now been reclassified as a LERAP B product.  This is common to a lot of products as they go through the re-registration process.

All newly manufactured product will carry this label classification and must be adhered to.  All existing stock (non LERAP B labelled stock) can be used in accordance with its label with the following use up periods:

Last sales from distribution onto farm are the 30th September 2012.
Last use by growers is the 30th September 2013.

Pastor (MAPP No: 11168)

Pastor* has also recently had a regulatory update including reclassification to LERAP B, amongst other things. However all product planned to be sold by Dow AgroSciences this spring will be subject to the existing label. All this stock (non LERAP B labelled stock) can be used in accordance with the existing label with the following use up periods:

Last sales from distribution onto farm are the 31st August 2012.
Last use by growers is the 31st August 2013.

Learn more about current Pastor Label 

When will treating docks in grassland start?

Soon. With the mild spring weeds are rapidly growing and docks are approaching the ideal stage for treatment. Docks are best treated when they have reached the rosette stage, are actively growing and look green and healthy. Reddy blue leaves indicate that plants have been frosted, and herbicide uptake will be poor. Docks respond well to nitrogen, so a good time to spray is two to four weeks after the first fertiliser application, as they should be actively growing by then.

When treating weeds early it is important to select a herbicide that will not damage the grass. Translocated herbicides, such as Doxstar*, control target weeds without checking the important first flush of spring grass. The first cut of silage is crucial for both yield and quality and it is important not to compromise this.

How do I control dandelions in grassland?

Grazon* 90, Doxstar and Thistlex* have excellent activity on perennial dandelions pre-flowering. Pastor at 2 L/ha also offer good activity on seedling dandelions (smaller than 5cm) in new leys.

Subscribing to Dow AgroSciences' Agronomy Update & Pestwatch gives eligibility for 1 Crop Protection BASIS Points annually. Please include course name "Agronomy Update & Pestwatch" and number "CP/19948/1112/g" on your training record. These details apply until 31st May 2012.

If you require any further information please contact our technical Hotline on 0800 689 8899 or your local Dow AgroSciences representative.

Dow AgroSciences supports the safety and efficacy of its products for tank mixes shown as Physically and Biologically Compatible, but does not warrant the efficacy of other tank mix partners.

Use plant protection products safely.  Always read the label and product information before use.
For further information including warning phrases please refer to the product label.

* Broadway, Doxstar, Grazon, Pastor, Spitfire, Starane and Thistlex are trademarks of Dow AgroSciences LLC.
^# Dow Shield is a trademark of the Dow Chemical Company.
All other brand names are trademarks of other manufacturers for which proprietary rights may exist.

Broadway Star contains florasulam and pyroxsulam
Doxstar contains triclopyr and fluroxypyr
Dow Shield 400 contains clopyralid
Grazon 90 contains clopyralid and triclopyr
Pastor contains triclopyr, fluroxypyr and clopyralid
Spitfire contains florasulam and fluroxypyr
Starane 2 contains fluroxypyr
Starane XL contains fluroxypyr and florasulam
Thistlex contains clopyralid and triclopyr

More info at www.dowagro.com/uk