Agronomic performance of dwarf milling oats in Western Australian environments

Document Type

Conference Proceeding

Publication Date

9-2006

Conference Title

Groundbreaking Stuff: Proceedings of 13th Agronomy Conference 2006

Place of Publication

Perth

Keywords

Dwarf milling oats, non dwarf milling oats, grain quality, Genotype x environment, Biplot

Disciplines

Agronomy and Crop Sciences

Abstract

A series of field experiments were conducted in the Western Australian wheatbelt to understand Genotype x Environment interactions in comparing the agronomic performance (yield stability and quality) of new dwarf oat varieties against established varieties. Three new dwarf varieties – Kojonup, Possum and Mitika – are being evaluated for their potential to be used in the milling industry. Results from the 2004 and 2005 season suggest that Kojonup had a higher yield potential (3.3 t/ha) than the most widely grown non-dwarf, milling variety Carrolup (2.7 t/ha). Overall, Kojonup yielded 13 – 19 % more than Carrolup, and it’s yield was more stable as time of seeding and soil type were changed. The performance of the other two dwarf varieties Possum and Mitika was found to be satisfactory (3.0 and 2.9 t/ha, respectively) but not as good as of Kojonup. The minimum market receival standards for quality such as hectolitre weight ( > 51 kg/hl) and screenings ( < 10% of < 2 mm) were successfully met by most of the varieties examined. Time of seeding and type of soil were found to have significant influence on both yield and quality but the effects were site specific. The grain quality of the three new dwarf varieties was found to be suitable for receival as milling but slightly inferior to Carrolup.

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