Promising first reports on new IWM tool

Promising
first reports on new Roundup®-Triazine (RT) canola have emerged from
the canola growing regions of Australia.

Central
Victorian grower Barry Forbes was one of the first to grow the new technology crop,
citing Integrated Weed Management (IWM) and yield as his motivation.

Mr Forbes runs
cropping and livestock operation ‘Yallembee’ at Eddington, 47km west of Bendigo,
with his brother Morris and nephew Stuart.

Their biggest
crops, wheat and canola, are planted to about 1200 hectares total each year and
they have around 4,000 sheep – a mix of Merino rams and White Suffolk – as well
as cattle.

Due to growing
populations of ryegrass and radish on his paddocks, he planted three different
Roundup Ready canola hybrids across 400ha last season to help eradicate them,
in addition to Hyola® 525RT®, the first release in the RT
range, in amongst the Roundup canola to see its potential.

According to
Pacific Seeds and Monsanto, the developers of the world-first technology, RT
works by combining the broad spectrum knockdown control of Roundup Ready with
the residual activity of triazine herbicides.

It forms part
of a broader IWM strategy to help growers more effectively control weeds like
ryegrass and radish in a landscape of increasing herbicide resistance across multiple
chemistries.

Mr Forbes said
a paddock full of weeds, a frosty winter and a lack of spring rain did not stop
him from getting a good result from his canola and cereals.

“It was a
fairly dirty paddock in regards to ryegrass because we had a wet winter the
previous year,” he said.

“Then we had
severe frosts in winter and only one good in-crop rain event in September of
25-30mm, so we didn’t break any records here.

“Saying that, the
results were quite pleasing. The RT
didn’t have a yield penalty typical of Triazine; yielding similar to the three
Roundup crops we had in, so it was a good test.”

Mr Forbes said
the canola also cleaned up the paddock significantly.

“We didn’t see
any radish in the crop at all.”

On yield, he
said they grew canola predominately for weed control but “it’s nice to get a
good yield to keep you afloat too.”

They planted
the canola in late-April, followed by 260ha of Derrimut and 260ha of Rosella
wheat early May, then 260ha of Cobra wheat on May 20.

All of the
canola was sown at 3kg/ha and received two 80kg applications of urea, and some paddocks
received 2.5t/ha of gypsum.

Mr Forbes said
they windrowed the canola in late-October, started harvesting it early November
and began the wheat harvest early December.

The wheat also
impressed him given the frost and dry of the 2014 season.

“It was marvellous
the crops we were getting.

“Usually our
yields are good but protein is down, but this year the quality of the grain was
excellent ‚Äì a lot of it went APW.”

He said average
yields were 2.5t/ha.

Encouraged by
both the weed control and yield of RT, Mr Forbes said he is definitely planting
it next winter.

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