Hyper Yielding Crop Wheat Disease Management x Variety - NSW

• The highest yielding cultivars in the trial were Stockade and Scepter grown under the highest fungicide input (9.1 & 8.7t/ha).
• Scepter gave almost 2t/ha response to fungicide compared to AGTW005 that generated a 0.36t/ha yield increase comparing untreated to a four-unit fungicide approach.
• There were small but significant differences in grain quality due to fungicide management that were of most significance with the more susceptible milling wheats such as Scepter.
• The most profitable approach to fungicide management with three of the four varieties (Stockade, RGT Cesario & Scepter) was four units of fungicide input based on flutriafol followed by three foliar fungicides.
• With the most resistant cultivar AGTW005 a 0.36t/ha yield response to fungicide was not sufficient to pay for the full fungicide approach, and the nil fungicide approach was the most profitable, although with this variety margins were very similar irrespective of expenditure outlay.

Trial design: Factorial 

Rotation position: 2022 Canola, 2021 Wheat, 2020 Canola, 2019 Legume Pasture
Soil type: Red clay loam
Nitrogen 0-60cm: 226kg N/ha
Colwell P (ppm) 0-10cm: 32mg/kg
pH (CaCl2) 0-10cm: 5.0
Organic Carbon (%) 0-10cm: 2.6%