• Early maturing, mid-tall oat
  • Flowers slightly earlier than Carrolup and 7-10 days earlier than Kojonup
  • Highest yielding potential milling oat variety across NVT trials in Australia
  • 23% higher yielding than Carrolup & 13 % higher than Wandering (mean % for WA zones)
  • Potential milling variety
  • Improved disease resistance package
  • Good straw strength and standability

    Download a copy of the Williams Oat factsheet.


    Williams is a mid-tall, high yielding oat adapted to Western Australia. It flowers slightly earlier than Carrolup and about a week to 10 days earlier than Kojonup. Williams is moderately resistant to stem rust and resistant to leaf rust in WA. It also has improved septoria resistance compared to Carrolup and Wandering. Williams is a potential milling variety. Hectolitre weight is similar to Kojonup and slightly lower than Carrolup. Screenings are similar to Carrolup and groat percent slightly lower than Carrolup and Mitika. 


    Pest Resistance

    Consult your preferred agronomist / advisor for up to date advice on Williams’s pest resistance and associated management decisions. 


    Disease Resistance / Tolerance

    Stem rust, leaf rust, BYDV and septoria reactions for 6 grain varieties in Western Australia.



    Sowing Rate

    A formula can be initiated to calculate sowing rates – taking into account target plant density, germination percentage, seed size and establishment rates. 



    1000 seed weight in grams = 30

    Target plant population / sq metre = 140

    Establishment % = 80

    Germination % = 90

    Sowing Rate = 30 x 140 / 100 / (0.8 x 0.9)

    Sowing Rate = 58 kg/ha.



    Average grain yields (t/ha) in 4 states and the average for all states for 6 oat varieties (2005 to 2012) with the number of trials in brackets:



    Herbicide Tolerance

    Please contact your local Heritage Seeds' territory manager or agronomist for up to date herbicide tolerance data.

    Information is also available via DAFWA website - “Herbicide Tolerance of Bannister and Williams Oats.” ref: Harmohinder Dhammu, Research Officer and Vince Lambert, Technical Officer, Department of Agriculture and Food WA, Northam and Katanning.


    Variety Management / Agronomy

    Williams should be treated in a similar way to other milling and feed oats except where reference has been made to specific issues in this brochure. Annual rainfall - suitable for low (350mm) to medium (800mm) annual rainfall areas. Areas of adaptation – Williams has performed well in all rainfall locations where cereal cyst nematode and stem nematode are not a problem. It is a potential milling variety and can be used as feed oats in all WA AgZones. Williams has consistent high yields and improved stem and leaf rust resistance.


    Sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name. While oats are suitable for human consumption as oatmeal and rolled oats, one of the most common uses is as livestock feed.