High performance of a low input, mixed western Australian farming system: public policy implications from the case of Tolga farm

Table 1 Tolga Farm Summary, 2021 and Target model (from 2022)

	Nearest town	Farm size (ha)	M4 average size (ha)	Rainfall (mm)	Rainfall GSR (mm)	% Crop / Pasture	Main crops* 2021 & 2022 on	Established pasture	Stubble cover over summer
	Kulin	5,200	3,300	350	223	50:50 (2021) / 35: 65 (2022 on)	B (58%), O (38%), GW (4%) /B (40% O (60%)	Subclover (up to 90%)	1T/ha after grazing
Estimated biomass^, T/ha								3.2 (Decile 5)
Estimated legume N, kg/ha^ EVALUS#						(2% N) 60 kg (available, 25 single rotation) 120 (available, 50 double rotation)

*= Barley (B), Oats (O) and Grazing Wheat (GW)
^= Assessment in paddock, Dr Angelo Loi, DPIRD
#= EVALUS modelling based on DPIRD nitrogen model (currently being updated as clearly understates available N)

ISSN: 2520-8748