- 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 standibility
Williams is a mid tall, high yielding line 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.
Consult your preferred agronomist / advisor for up to date advice on Williams’s pest resistance and associated management decisions.
Disease Resistance / Tolerance
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.
(Data courtesy National Oat Breeding Program, NVT programs in SA, Vic, & NSW and CVT program in WA. Analysis by SAGI.)
Average physical & chemical grain quality (measured using NIR) characteristics for 6 oat varieties (combined SA, Vic, WA & NSW data), 2005 to 2011.
Data courtesy National Oat Breeding program and analysis by Chris Lisle, SAGI.
WAOAT 2332 registered yield loss in a trial with Diuron 1 L + Dual® 0.5 L/ha (pre-emergent), Broadside® 1 L, Diuron 0.5 L + MCPA 0.5 L and 2, 4-D (Amine) 625 1.3L/ha applied post-emergent at label recommended timing in 2012 at Katanning on a loamy sand soil. It also registered low crop safety margin with Amicide Advance 700 1.5 L/ha applied at Z31. The new variety is being tested further in 2013 to confirm these results.
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.