Facility and experimental design

Facility and experimental design

In 2016, the Horsham AGFACE facility consists of four CO2 enrichment rings of 16 m diameter each, and six control plots receiving ambient CO2. Elevated CO2 is targeted at 550 ppm.

Sub-plots with two cultivars and a range nitrogen input levels and types are randomly distributed within the rings. The intent is to use nitrogen fertiliser at various rates, timing and modes to reduce or reverse the decline in grain protein that is universal under elevated CO2.