To assess the performance of winter (2 and 6 row) and spring (2 row) barley germplasm managed under six different management strategies.

Disease resistance of Pixel was far superior to Planet, management significantly influenced grain yield in the disease susceptible cultivar Planet.

RGT Planet responded the most to intensifying fungicide inputs achieving 3.98t/ha under standard inputs and 6.48t/ha under higher inputs. The addition of PGR and or more N did not further increase yield in Planet.

Madness a 2 row winter barley achieved yields in the range of 5.35 – 6.14t/ha across all management and demonstrates its improved disease resistance. There was no yield penalty from grazing.

Pixel a 6 row winter barley achieved yields in the range of 7.45 – 8.72t/ha across all management combinations. The addition of a PGR in both standard and high input systems resulted in the highest yields of 8.66 and 8.72t/ha.

The improved disease resistance of winter barley shows it can be farmed with less intensive fungicide strategies when early sowing, Planet is less suited to this system as the disease pressure is too high.

Tests weights and retention were lower, and screenings higher in Planet compared to the winter varieties which highlights the significant effect of disease (even under high inputs).

Proteins were all above 11% and suggests yield was non limited by N

Net form of Net Blotch was the main disease which affected up to 80% of the canopy in Planet under standard conditions.

Sown: 21 April 2021 Harvested: 14 December 2021

Rotation position: 1st cereal after faba beans, 2019 canola

Soil type & management: Neutral-slightly alkaline Organosol (Peat soil) – high organic matter (0- 30cm)

Soil Mineral N (NO3): 151.0 ppm on 1 June 2021