Yield responses to sowing date in southern NSW: One cultivar doesn’t fit all

Felicity Harris, Rick Graham, Peter Matthews, David Burch, Eric Koetz, Ian Menz, Colin McMaster, Michael Mumford

Research output: Book chapter/Published conference paperConference paperpeer-review


In southern NSW, wheat is traditionally sown in a window from early–late autumn (April–May), to ensure flowering occurs at an optimal time in spring. This project evaluated genotype (G) × environment (E) × management (M) interactions using a range of commercial cultivars and breeding lines that differed in phenology patterns from slow winter types through to fast spring types, where anagement relates to time of sowing. Field experiments were sown from early April–June at three locations in southern NSW from 2014–2018, where annual rainfall ranged from 224 to 808 mm. Significant interactions between G × E × M, with
genotypic responses to sowing time varying across growing environments, and within seasons; largely attributed to seasonal water supply and demand and temperature extremes were determined. Four environment groups were identified, defined by site x sowing time, whereby genotype rankings differed;
indicating cultivars are not broadly adapted to environment and management. This affirms that cultivar suitability varies with environment and grain yield can be optimised through management of sowing time by growers.
Original languageEnglish
Title of host publicationProceedings of the 2019 Agronomy Australia Conference
Place of PublicationAustralia
PublisherAustralian Society of Agronomy
Number of pages4
Publication statusPublished - 2019
Event19th Australian Agronomy Conference 2019 - Wagga Wagga Civic Theatre, Wagga Wagga, Australia
Duration: 25 Aug 201929 Aug 2019
https://web.archive.org/web/20190122040437/http://agronomyconference.com/ (Conference website)
https://web.archive.org/web/20190625230032/http://www.agronomyconference.com/program (Conference program)

Publication series

Name19th Australian Society of Agronomy Conference, 25-29 August 2019, Wagga Wagga, NSW, Australia


Conference19th Australian Agronomy Conference 2019
Abbreviated titleCells to Satellites
CityWagga Wagga
OtherThe 19th Australian Agronomy Conference will be held in Wagga Wagga, NSW from 25 – 29 August 2019. In the heart of the Riverina, Wagga Wagga has a range of rural industries across the region. Wagga has everything to offer the agronomy conference being surrounded by a mixed farming zone with irrigation to the west and permanent pasture enterprises to the east.
The conference theme Cells to satellites highlights the integrative nature of agronomy. Each of us work across a range of disciplines to optimise crop or pasture production for productivity and profitability. We have an increasing number of tools available to increase the precision and accuracy of our work; whether it is at the “cellular” level where DNA is mapped and biochemistry is unravelled or using “satellites” for remote sensing or guidance. The opportunities for enhancing our agronomy research is boundless.
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