The University of Adelaide
2019 Hart Canola.xlsx (220.17 kB)

Optimising Plant Establishment 2019 Hart Canola Experiment

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posted on 2023-12-11, 07:24 authored by Glenn McDonaldGlenn McDonald, Jacky Desbiolles, Sarah Noack, Stefan Schmitt, Claire Pickles, Genevieve Clarke, Rebekah Allen, Ashley Amourgis, Jon Midwood, David Minkey

Data from the 2019 crop establishment trial at Hart, SA. The trial compared the establishment of canola at different seeding rates, under a conventional cone seeder and under a precision seeder, and at two different row spacings (a narrow row spacing of 22.9cm vs a wide row spacing of 30.5cm). The experiment was run under the UOA1803-009RTX GRDC research project led by the University of Adelaide, with the experiment and local data collection handled by the Hart Field-Site Group.

Files:2019 Hart Canola.xlsx

Experiment setup:Experiment managed locally by the Hart Field-Site Group. The trial was organised as a split plot design, with 4 main plot treatments (conventional seeder: wide row spacing, conventional seeder: narrow row spacing, precision seeder: wide row spacing, precision seeder: narrow row spacing), and 6 subplot treatments (seeding rate 15, 25, 35, 45, 55, 65 seeds/m2). The design was arranged spatially in 3 columns with 32 rows, 4 replicates, for 96 plots total.

Variables recorded:establishment count (plants/m2), interplant distance (cm), NDVI, seedling depth (mm), flowering biomass dry weight (t/ha), stubble rating, yield (t/ha), 1000 grain weight (g), seeds/m2

Data collection and assessment:The paddock was seeded on 14/05/2019, with the wide-row precision seeder sown on 15/05/2019. Plant emergence counts were made by counting plants across 2 rows in specified plots on 25/05/2019, 27/05/2019, 31/05/2019, 03/06/2019, 06/06/2019 and 21/06/2019, with the final establishment count for all plots and interplant distances measured on 09/07/2019. Seedling depth was measured in mm, averaged over 5 separate counts at specified plots, on 14/06/2019. NDVI readings were made on 18/07/2019 and 02/08/2019. A stubble assessment was also made on 06/08/2019. The flowing biomass cuts were made for the dry weight assessment on 09/09/2019, and the harvest index cuts were made on 25/10/2019. At harvest on 29/10/2019, the yield (in t/ha) and 1000 grain weight were recorded for all plots.


GRDC contract code


GRDC project title

Optimising plant establishment, density and spacings to maximise crop yield and profit in the southern and western regions

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Start date for this data collection


End date for this data collection


Spatial coverage

Hart experiment site, SA.

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  • Open

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