Thirteen new varieties are featured in the newly published ‘2019 Canola Variety Sowing Guide for Western Australia’.
The annual guide, produced by the WA Department of Primary Industries and Regional Development with co-investment from the Grains Research and Development Corporation (GRDC), is essential reading for growers planning next season’s cropping program.
It harnesses commercial and agronomic information, drawing on extensive National Variety Trials (NVT) and blackleg testing results, for all available canola varieties.
This latest edition provides an overview of seven new Triazine Tolerant (TT) varieties, four new Roundup Ready® (RR) varieties and two new Clearfield® (CL) lines, alongside summaries of 35 existing canola varieties.
Department development officer Jackie Bucat said with new varieties came new opportunities, particularly with the release of two lines that were the first of their kind.
“The guide details the first variety to be released with tolerance to a combination of Clearfield® (CL) and TT herbicides, Hyola® 580T, which can be sown following CL crops or to broaden the weed control spectrum,” Ms Bucat said.
“The first varieties that incorporate the new TruFlex® trait, which have a combination of glyphosate and triazine tolerance, Hyola® 410XX and the ‘stacked’ variety, Hyola®530XT, are also profiled.
“Growers should note seed availability for TruFlex® varieties, which allow for higher glyphosate rates and a wider application window, is pending regulatory approvals.”
The other new RR varieties detailed in the guide are Pioneer 43Y29, Pioneer 45Y28 (PR) and InVigor R 4020P.
An overview of the new TT hybrid varieties InVigor® T 3510, SF Spark TT, HyTTec® Trophy, Hyola® 550TT and Pioneer 45T03(TT) is also included, although NVT data is not available for all new varieties as several will enter the program for the first time this season.
There is also information on the new CL varieties Saintly CL and Pioneer 45Y93 (CL).
The most recent sowing figures from 2017 show that 78 per cent of plantings were to OP TT varieties, with three varieties, ATR Bonito, ATR Stingray and ATR Mako, making up 70 per cent of the area sown.
Hybrid TT varieties made up 2 per cent, bringing the total proportion of TT canola up to 80 per cent, while RR varieties made up 18 per cent.
Ms Bucat said the Canola Variety Sowing Guide would be useful to growers sowing hybrid TT and RR varieties, as it could be difficult to assess the benefits of these varieties.
“The guide has valuable information on disease and maturity ratings that will assist growers to evaluate which variety is best suited to their location and the 2019 season,” Ms Bucat said.
The publication contains the usual summary of yield, oil and blackleg resistance for all varieties, as well as an overview of NVT trial data and updates on blackleg resistance ratings.
There is also a new section on calculating seeding rates, including the optimum canola density and expected field establishment, which can be used with the department’s online seeding rate calculator.
Canola growers can also enhance their pre-seeding research by consulting the ‘Canola Agronomy Research in WA’ Bulletin.
Source: WA DPIRD