Sunflower configuration × population × hybrid – Gurley 2015–16
The information contained in this publication is based on knowledge and understanding at the time of writing (July 2016) and may not be accurate, current or complete. The State of New South Wales (including the NSW Department of Industry), the author and the publisher take no responsibility, and will accept no liability, for the accuracy, currency, reliability or correctness of any information included in the document (including material provided by third parties). Readers should make their own inquiries and rely on their own advice when making decisions related to material contained in this publication. The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product name does not imply endorsement by the department over any equivalent product from another manufacturer.
Optimising sunflower performance relies on being able to match a hybrid with the growing environment and ensuring that the most suitable agronomic management is provided. Suitable crop agronomy involves using the most appropriate row configuration and plant population as well as ensuring adequate nutrition, disease and insect management. This experiment and others conducted in this series were designed to provide recommendations for growers and advisors to support decisions on optimal row configuration, plant population and hybrids for sunflower production in the north-western and Liverpool Plains regions of NSW. These two environments are the primary sunflower growing regions in northern NSW.
Sunflower yields were very low at this site in 2015–16, averaging 0.56 t/ha.
Plant population affected plant measurements, with larger head diameters and 1000 grain weights resulting from lower populations.
Hybrid selection also affected plant measurements. Ausistripe 14 had the longest arc length but the smallest head diameter. Ausigold 4 and Ausigold 62 had very similar plant characteristics.
Lead research organisation
Department of Primary Industries NSW
Host research organisation
Trial funding source
Trial funding source
DPI NSW DAN00197
Tactical agronomy for selected crops in the northern region (safflower, linseed, sunflower)
This experiment was part of the project Tactical agronomy for selected crops in the northern region (safflower, linseed, sunflower) (DAN00197), with joint investment by NSW DPI and GRDC. Technical assistance provided by Delphi Ramsden, Angus Hombsch, Alice Bowler and Bronwyn Brennan (NSW DPI) is gratefully acknowledged. Thanks to Doug Clark, ‘Kyntyre’, Gurley for hosting the experiment.
Trial results Target versus actual plant populations established
Target plant population (plants/ha)
Plant establishment (plants/ha)
Plant establishment plants/ha
Target plant population plants/ha
Trial results Hybrid performance at 'Kyntyre'
Test weight (kg/hL)
1000 grain weight (g)
1000 grain weight g
Test weight kg/hL
Site 3, Gurley NSW 2015
Observed climate information
Rainfall avg ann (mm)
Rainfall avg gsr (mm)
Rainfall trial gsr (mm)
Derived climate information
Site 3, Gurley NSW
NOTE: Exact trial site locality unknown - Climate data may not be accurate
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.
Loretta Serafin, Mark Hellyer and Peter Perfrement, NSW DPI
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