Harm van Rees is a consultant from the Birchup Cropping Group, Victoria. Harm was invited to give a talk to the Climate Champions during the February Climate Champions National Workshop held in Adelaide, 2011.
2. Nine consecutive years
with decile 3 or less rainfall
to
decile 10 with the wettest
harvest on record
(Nov to Jan rainfall - 330mm)
3. Discussion topics
• Comparison of three farms in the Mallee, southern
Mallee and Wimmera
• Importance of bio-physical constraints
• Impact of the Millennium drought
• Long term production and financials - profit
• Risk management
4. Bio-physical constraints
(i) Rainfall
Birchip annual rainfall (1891 to 2010) (average = 365mm)
800
Annual rainfall
700 5 year running mean
600 Millennium
Federation drought WWII drought drought
Rainfall (mm)
500
400
300
200
100
0
Multiple year drought
Single year drought
5. (ii) Soils
• Mallee clay loam
• pH alkaline
Southern Mallee • Subsoil high in EC, chloride and
boron
• Rooting depth: 60 to 80cm
• Available soil water: 80mm
6. Mallee farm background
• No-Till operation since 2003 (sold all livestock)
• 100% crop – wheat, barley, canola, pulse crops
• All stubbles retained
• Precision seeding
• Liquid and solid fertiliser application at seeding
7. Southern Mallee farm background
• 2000 ewes - self replacing flock
• Stocking rate - 3 DSE/ha
• Feedlot as containment area and for
finishing lambs
• Change over to No-Till
• Precision seeding
• 70% - wheat and barley
• 30% - pasture / chemical fallow
• Occasionally a paddock of lentils
8. Wimmera farm background
• Mainly No-till
• Chickpeas, lentils, canola,
wheat, and barley
• Export oaten hay
9. Farm production
• Nineteen years data
• Farm size
• Paddock rotation
• Production (yield and protein)
• Inputs such as fertilisers and herbicides
• Management practices
19. Cumulative profit for the Mallee, southern Mallee and Wimmera
farms
2,000,000
Mallee
Southern Mallee
Cumulative farm earnings ($)
1,500,000 Wimmera
1,000,000
500,000
0
-500,000
20. Risk management
• The three farms are well managed (financially
and agronomically)
• For crop production the Southern Mallee farm
needs a decile 3 to 4 to break even; the Mallee
and Wimmera farms a decile 2 (assuming average
price)
• Livestock or another source of income, other
than crops, is essential for the Southern Mallee
farm
• 100% crop makes any enterprise vulnerable to a
single frost or heat event; rain at harvest; poor
price; crop disease etc.
21. Farm profit efficiency
Farm profit (excl. tax and interest) in relation to rainfall and the price of wheat
500
400
300
EBIT ($/ha)
200
100
0
-100
-200
200 300 400 500 600 700
Growing season rainfall plus on-farm wheat price
Profit ($/ha) = 2 x (GSR + Price of wheat – 350)
22. Main messages
• Understand the bio-physical constraints of the
enterprise
• Have a good grasp of the financial situation
• Consider the operators skill and capability
• Owner’s attitude towards risk
• Availability of labour
• Priorities for family and lifestyle