TECHNOTEREGISTERED AS A DIRECTED SPRAY FOR RESIDUAL WEED CONTROL IN COTTONAustralian cotton growers have a convenient new option for residual weed control in cotton. Nufarm’s Rifle® 440 is now registered for use as a directed spray for residual weed control of many grass and broadleaf weeds in cotton.Nufarm has developed this registration over several seasons. 14 trials and demonstrations in both irrigated and dry land cotton fields ensure both the crop safety and efficacy of this new and unique use pattern. As a result, Rifle 440 is the only pendimethalin product registered for this use in cotton. It can also be used pre-emergent or as a band spray in cotton (ideal for mixing with Convoy DF), on irrigation banks, channels and drains. It can also be used pre-emergent for chickpeas, mungbeans, sunflowers and many other crops.

HOW DOES RIFLE 440 WORK? Rifle 440 is a short residual herbicide which disrupts cell division and elongation and is absorbed by emerging shoots and roots. Susceptible weeds die before or soon after emergence.

The effectiveness of Rifle 440 is improved by rainfall or irrigation within 10 days of application to move it down into the top 3 - 4cm of soil, where it will be present in moist soil at the time of weed germination. If soil is too dry, efficacy may be reduced.

EFFICACY The addition of weedmaster DST (or another registered glyphosate product) to Rifle 440 may be required if weeds are present at application. No antagonism of the knockdown activity of weedmaster DST is observed where robust rates (1.5 - 2.2 L/ha) are used when tank mixing with Rifle 440. This tank mix can provide excellent knockdown and residual control of a range of weeds.

In trial and demonstration work Rifle 440 applications exhibited high levels of residual control of awnless barnyard grass. An average reduction of 97% in emergence of awnless barnyard grass was seen across six trials (Graph 1) and in a further three demonstration trials, complete control of any new germinations of awnless barnyard grass was achieved with a tank mix of weedmaster DST and Rifle 440 (Graph 2).

FEATURES AND BENEFITS• Residual weed control means less pressure on

subsequent sprays• Broad spectrum residual weed control and effective on

key weeds such as barnyard grass and liverseed grass and many broadleaf weeds

• Compatible with weedmaster® DST® for one convenient directed spray application

• Alternate Mode of Action is ideal for use as part of an Integrated Weed Management strategy to prevent or manage herbicide resistance

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Graph 1: Percentage reduction in emergence of awnless barnyard grass - 38 - 73 DAA (2011-2012)

GRAPH 1: Percentage reduction in emergence of awnless barnyard grass - 38 - 73 DAA

Image 1: Rifle 440 and weedmaster DST versus untreated control Illustrates excellent residual control of button grass when using Rifle 440 and weedmaster DST (foreground) versus untreated control (middle ground) (Nufarm trial in 2013, Narrabri, NSW).

RESISTANCE MANAGEMENTRifle 440 is an emulsifiable concentrate containing 440g/L of the residual herbicide pendimethalin. A Group D herbicide, Rifle 440 is ideal for use as part of an Integrated Weed Management (IWM) strategy. Some basic methods to manage resistance include:

• Always use the full label rate

• Rotating herbicide modes of action or use multiple modes of action

• Integrating other non-chemical methods of weed control into the crop management program

The information and recommendations set out in this brochure are no substitute for professional or expert advice and are based on tests and data believed to be reliable at the time of publication. Results may vary, as the use and application of the products is beyond our control and may be subject to climatic, geographical or biological variables, and/or developed resistance. To the maximum extent permitted by law, Nufarm Australia Limited disclaims all warranties of any kind, whether express or implied, including but not limited to any warranty that the information is up-to-date, complete, true, legally compliant, accurate, non-misleading or suitable.© 2015 Nufarm Australia Ltd. All trade marks (®,™) are owned by Nufarm Australia Ltd or used under license.

For more information on Rifle 440, contact your local Nufarm Area Sales Manager. nufarm.com.au

Image 2: Rifle 440 and weedmaster DST on awnless barnyard grassDemonstrates the outstanding residual control of awnless barnyard grass when Rifle 440 is applied at 3.4L/ha with weedmaster DST (Nufarm trial in 2015, Goondiwindi, QLD).

CRITICAL INFORMATION

PRODUCT TYPE Residual herbicide

ACTIVE INGREDIENT 440g/L pendimethalin

CHEMICAL FAMILY Group D

REGISTERED USEDirected spray registration. pre-emergent and a post-plant pre-emergent band spray

USE RATE

3.4L/ha In Roundup Ready Flex® cotton, 3.4L/ha tank mixed with 1.5 - 2.2L/ha weedmaster DST

WEEDS CONTROLLED/ SUPPRESSED

Barnyard, button and liverseed grass, pigweed and dwarf amaranth as well as 24 other weeds – see label for details

RECOMMENDED SPRAY QUALITY COARSE to VERY COARSE

WATER VOLUME 50 - 200L/ha

CROP STAGE Apply as directed spray from 4 node to 18 node

RAINFAST

Not required when used stand-alone. For tank mixes, refer to partner product. weedmaster DST has a 1 hour commercial rainfast offer when use with LI 700®

COMPATIBILITY

weedmaster DST, Prometryn 900DF, Convoy DF, Roundup Ready® Herbicide and many others. Refer to label for more details

PACK SIZES AVAILABLE 20L, 110L

DECISION SUPPORT TOOLScottonmap.com.au View cotton planted nearby before spraying

spraywisedecisions.com.au Provides a real time spray planner and meteogram

weedsmart.org.au Promotes techniques for the long-term sustainability of herbicide use

Graph 2: Percentage reduction in emergence of awnless barnyard grass - 28 - 43 DAA. Demonstration trials 28 - 43 DAA (2013 - 2015)

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Moree Boomi Dirranbandi

GRAPH 2: Percentage reduction in emergence of awnless barnyard grass - 28 - 43 DAA