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New herbicide from Bayer CropScience gets the big tick from farmers

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article image Velocity herbicide

Bayer CropScience  has continued its run of breakthrough product releases, last week launching its new post-emergent selective herbicide, Velocity, to the Australian market for the 2009 season, with much industry acclaim.  

Based on the unique active ingredient, pyrasulfotole, Velocity, features photo-X triple action technology, combined with bromoxynil and its latest crop safener, mefenpyr-diethyl.  Velocity is the second in the series of cereal herbicides from Bayer CropScience featuring photo-X herbicide technology.  

The active ingredient behind photo–X technology, pyrasulfotole, simultaneously interrupts three crucial life processes within the plant.  Pyrasulfotole cuts off the plant’s energy process, the vitamin process and the protective process.  

Bayer CropScience Product Manager, Phillippa Fleming said the synergy between pyrasulfotole, an HPPD inhibitor (Group H), and bromoxynil (Group C) resulted in a unique action that controls weeds early.  

“Velocity is registered for use in wheat, barley, triticale and cereal rye from as early as the two-leaf stage (Z12).  Velocity herbicide is registered for the control of 19 broadleaf weeds, including wild radish, doublegee, volunteer canola, capeweed, indian hedge mustard, wild turnip, deadnettle, lupins, wireweed, fumitory, sowthistle, bindweed, and volunteer pulses, just to name a few,” Phillippa said.  

The Group H and C herbicide can be applied at 500 mL/ha or 670 mL/ha and is recommended to be sprayed with the adjuvant, Hasten, at 1% v/v.   Available in 10 L and 110 L packs, Velocity herbicide applied at 500 mL/ha equates to an investment of $15 per hectare, with the higher 670 mL/ha rate.  

“Most importantly, the return on the investment is excellent, with trials of the herbicide showing very good control at the low label rate. The crop safener within Velocity also results in exceptional selectivity for outstanding crop protection,” Phillippa said.  

Bayer CropScience Development Manager – Herbicides John Ashby, said Velocity will control Group B, F and I resistant wild radish and it was vital to achieve good spray coverage on each individual weed.  

Velocity herbicide requires daylight to be most effective and for this reason John recommends spraying Velocity on younger weeds during daylight hours and at least one hour before sunset in suitable conditions. 

In a fully replicated Landmark trial at Edgeroi in Northern New South Wales, Velocity herbicide emerged a clear winner on bindweed (Convolvulus arvensis) control.  

Recognised as one of the 10 worst weeds in the world in terms of its competitive ability in cereals, bindweed has the ability to smother and kill off vast areas of crop.  

Narrabri based senior Landmark agronomist, Dean Hancock, discussed the excellent results achieved with Velocity Selective Herbicide on black bindweed, wireweed and annual sowthistle.  

“Of all the products and tank mixes applied in the 2008 trial, two features stood out with Velocity Selective Herbicide - weed control and crop safety,” Dean said.  

“When measured 7, 14 and 21 days after applying the treatments; Velocity consistently gave the quickest brown-out score on the weeds.”   

“When compared to the district standard of Tordon 242, Velocity proved superior in both weed control and brown-out percentage.”  

The senior I.K. Caldwell agronomist, Phil Watkins put down a trial in 2008 to test the new herbicide technology in Whistler wheat sown into good red brown Dookie earth in Victoria. The paddock had been continuously cropped for about 20 years.  

“Velocity worked rapidly, controlling the radish and volunteer lupins completely,” Phil said.  

“Our growers have been using Tigrex for a long time, so another herbicide group is really important in avoiding and managing herbicide resistance issues.  

“What I see with Velocity is that if you have competitive weed numbers, it will give you quick control, removing weed competition earlier and faster than many of the other wild radish sprays,” Phil concluded.  

Former Western Australian agronomist and now farmer, Nick Duane, admits he was keen to try Velocity on a larger scale, with a focus on wild radish control.  

“In last year’s Velocity trial we had a reasonably high population of relatively small wild radish. The result was a quick acting product that delivered a rapid brown-out of weeds without any noticeable impact on the crop,” Nick said.

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